Feed circuit, equipment and method of multi-frequency array antenna
阅读说明：本技术 一种多频阵列天线的馈电电路、设备及方法 (Feed circuit, equipment and method of multi-frequency array antenna ) 是由 肖振宁 于 2019-09-29 设计创作，主要内容包括：本申请公开了一种多频阵列天线的馈电电路、设备及方法。该电路包括多个天线阵元和与多个天线阵元一一对应连接的多个分频器单元；分频器单元用于通过馈电导线获取相应天线阵元接收的具有多个频率的多频射频信号；将对应的天线阵元接收的多频射频信号按不同频率分成多个单频射频信号；与多个频率一一对应的多个合路器单元,每个合路器单元分别与多个分频器单元连接,用于将多个分频器单元中相同频率的单频射频信号合路后,传输至对应接收该单频射频信号的收发机。与现有技术相比,该馈电电路实现了阵列天线馈电结构的小型化。(The application discloses a feed circuit, equipment and a method of a multi-frequency array antenna. The circuit comprises a plurality of antenna array elements and a plurality of frequency divider units which are correspondingly connected with the antenna array elements one by one; the frequency divider unit is used for acquiring multi-frequency radio frequency signals with multiple frequencies received by corresponding antenna array elements through the feed wires; dividing the multi-frequency radio frequency signals received by the corresponding antenna array elements into a plurality of single-frequency radio frequency signals according to different frequencies; and each combiner unit is respectively connected with the plurality of frequency divider units and is used for combining the single-frequency radio-frequency signals with the same frequency in the plurality of frequency divider units and then transmitting the combined signals to the corresponding transceiver for receiving the single-frequency radio-frequency signals. Compared with the prior art, the feed circuit realizes the miniaturization of the feed structure of the array antenna.)
1. A feed circuit for a multi-frequency array antenna, the circuit comprising:
the frequency divider units are connected with the antenna array elements in a one-to-one correspondence manner, and each frequency divider unit is used for acquiring multi-frequency radio-frequency signals with multiple frequencies received by the corresponding antenna array element through a feed wire; dividing the multi-frequency radio frequency signals received by the corresponding antenna array elements into a plurality of single-frequency radio frequency signals according to different frequencies;
and each combiner unit is respectively connected with the plurality of frequency divider units and is used for combining the single-frequency radio-frequency signals with the same frequency in the plurality of frequency divider units and then transmitting the combined signals to a transceiver correspondingly receiving the single-frequency radio-frequency signals.
2. The circuit of claim 1, wherein when the plurality of antenna elements includes at least one first antenna sub-element and at least one second antenna sub-element, the plurality of divider units are connected in a one-to-one correspondence with the at least one first antenna sub-element and the at least one second antenna sub-element, respectively, of the plurality of antenna elements;
each frequency divider unit connected with at least one first antenna sub-array element in a one-to-one correspondence manner is specifically used for acquiring a multi-frequency radio frequency signal of a first phase sent by the corresponding first antenna sub-array element through a feed conductor; dividing the multi-frequency radio-frequency signals of the first phase received by the corresponding first antenna sub-array elements into a plurality of single-frequency radio-frequency signals according to different frequencies;
each frequency divider unit which is connected with at least one second antenna sub-array element in a one-to-one correspondence manner is specifically used for acquiring a multi-frequency radio frequency signal of a second phase sent by the corresponding second antenna sub-array element through a feed wire; dividing the multi-frequency radio-frequency signals of the second phase received by the corresponding second antenna sub-array elements into a plurality of single-frequency radio-frequency signals according to different frequencies;
each combiner unit comprises a plurality of first combiner sub-units;
each first combiner subunit is connected with the plurality of frequency divider units, and is used for combining the single-frequency radio-frequency signals with the same phase and frequency in the plurality of frequency divider units and then transmitting the combined signals to the corresponding transceiver for receiving the single-frequency radio-frequency signals.
3. The circuit of claim 2, wherein each of said combiner units further comprises a second combiner sub-unit; the circuit further comprises a phase shifter element connected to the second combiner sub-element;
the phase shifter unit is connected with a first combiner subunit corresponding to the single-frequency radio-frequency signal with the obtained target phase and target frequency and is used for modifying the phases of the single-frequency radio-frequency signal with the target phase and target frequency; wherein the target phase is any one of the first phase and the second phase, and the target frequency is any one of the plurality of frequencies;
the second combiner subunit is respectively connected with the first combiner subunit corresponding to the single-frequency radio-frequency signal of the target phase and the target frequency after the phase modification and the first combiner subunit corresponding to the single-frequency radio-frequency signal of the target frequency except the target phase, and is used for combining the single-frequency radio-frequency signal of the target phase and the target frequency after the phase modification with the single-frequency radio-frequency signal of the target frequency except the target phase.
4. The circuit of claim 1, wherein each of the plurality of antenna elements has the same length as a feed conductor connected between each of the plurality of divider elements.
5. The circuit of claim 1, wherein a length of a transmission wire to which each of the plurality of first combiner sub-units is connected to the plurality of frequency divider units is the same.
6. A circuit as claimed in claim 3, wherein the phase shifter element is in particular adapted to shift the phase of the single frequency radio frequency signal of the target phase, target frequency by 90 degrees if the first phase differs from the second phase by 90 degrees.
7. A feeding device of a multi-frequency array antenna, characterized in that the feeding device comprises a feeding circuit according to any one of claims 1-6, an array antenna and a plurality of transceivers.
8. A method of feeding a multi-frequency array antenna, the method comprising:
acquiring multi-frequency radio frequency signals with multiple frequencies received by multiple antenna array elements through a feed wire;
dividing the received multi-frequency radio frequency signals into a plurality of single-frequency radio frequency signals according to different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
9. The method of claim 8, wherein dividing the received multi-frequency radio frequency signal into a plurality of single-frequency radio frequency signals at different frequencies comprises:
combining single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
10. The method of claim 9, wherein the multi-frequency radio frequency signals comprise a first phase multi-frequency radio frequency signal and a second phase multi-frequency radio frequency signal;
dividing the received multi-frequency radio frequency signal into a plurality of single-frequency radio frequency signals according to different frequencies, comprising:
dividing the multi-frequency radio frequency signal of the first phase or the multi-frequency radio frequency signal of the second phase into a plurality of corresponding single-frequency radio frequency signals of the first phase or a plurality of corresponding single-frequency radio frequency signals of the second phase according to different frequencies;
combining the single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies, wherein the method comprises the following steps:
combining single-frequency radio-frequency signals with the same phase and the same frequency in the plurality of single-frequency radio-frequency signals with the first phase or the plurality of single-frequency radio-frequency signals with the second phase;
before transmitting the single-frequency rf signal of each frequency to a transceiver that receives the single-frequency rf signal, the method further includes:
modifying the target phase and the phase of the single-frequency radio frequency signal of the target frequency; the target phase is any one of the first phase and the second phase, and the target frequency is any one of the plurality of frequencies;
combining the target phase and the single-frequency radio-frequency signal of the target frequency after the phase modification with the single-frequency radio-frequency signals of the target frequency except the target phase.
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a feeding circuit, a device, and a method for a multi-frequency array antenna.
Background
The directivity of a single antenna is limited, and in order to be suitable for applications in various occasions, two or more single antennas operating at the same frequency are fed and spatially arranged according to certain requirements to form an antenna array, and the antennas in the antenna array are called array antennas. The antenna radiating elements that make up the antenna array are called array elements. The antenna array has the advantages of directivity and miniaturization, and is widely applied to bridge products as a directional antenna.
The existing multi-frequency array antenna, such as a dual-frequency array antenna, is to place two single-frequency array antennas side by side, and this design has greatly increased the size of the product, and the existing multi-frequency array antenna, such as the feeding mode used by the dual-frequency array antenna, can include the following two kinds:
one is a dual-frequency double-feed point array antenna, the feed mode is that two feed points are formed through a microstrip line, an antenna array element respectively receives single-frequency radio-frequency signals of two frequencies through the two feed points, and respectively transmits the single-frequency radio-frequency signals of the two frequencies to corresponding transceivers through two transmission channels formed by the microstrip line, and the two transmission channels occupy larger volume and are difficult to realize miniaturization;
the other is a dual-frequency single-feed-point array antenna, the feed mode is that a feed point is formed by a microstrip line, an antenna array element receives a dual-frequency radio-frequency signal with two frequencies through the feed point, a frequency range formed by the microstrip line comprises a transmission channel with the two frequencies, namely an ultra-wideband channel, and the dual-frequency radio-frequency signal is transmitted to a transceiver, and the ultra-wideband channel has a larger volume and is difficult to realize miniaturization.
Disclosure of Invention
The embodiment of the application provides a feeding circuit, equipment and a method of a multi-frequency array antenna, which solve the problems in the prior art and realize the miniaturization of an array antenna feeding structure.
In a first aspect, a feeding circuit of a multi-frequency array antenna is provided, and the feeding circuit may include:
the frequency divider units are connected with the antenna array elements in a one-to-one correspondence manner, and each frequency divider unit is used for acquiring multi-frequency radio-frequency signals with multiple frequencies received by the corresponding antenna array element through a feed wire; dividing the multi-frequency radio frequency signals received by the corresponding antenna array elements into a plurality of single-frequency radio frequency signals according to different frequencies;
and each combiner unit is respectively connected with the plurality of frequency divider units and is used for combining the single-frequency radio-frequency signals with the same frequency in the plurality of frequency divider units and then transmitting the combined signals to a transceiver correspondingly receiving the single-frequency radio-frequency signals.
In an optional implementation, when the plurality of antenna elements include at least one first antenna sub-element and at least one second antenna sub-element, the plurality of frequency divider units are respectively connected with at least one first antenna sub-element and at least one second antenna sub-element in the plurality of antenna elements in a one-to-one correspondence;
each frequency divider unit connected with at least one first antenna sub-array element in a one-to-one correspondence manner is specifically used for acquiring a multi-frequency radio frequency signal of a first phase sent by the corresponding first antenna sub-array element through a feed conductor; dividing the multi-frequency radio-frequency signals of the first phase received by the corresponding first antenna sub-array elements into a plurality of single-frequency radio-frequency signals according to different frequencies;
each frequency divider unit which is connected with at least one second antenna sub-array element in a one-to-one correspondence manner is specifically used for acquiring a multi-frequency radio frequency signal of a second phase sent by the corresponding second antenna sub-array element through a feed wire; dividing the multi-frequency radio-frequency signals of the second phase received by the corresponding second antenna sub-array elements into a plurality of single-frequency radio-frequency signals according to different frequencies;
each combiner unit comprises a plurality of first combiner sub-units;
each first combiner subunit is connected with the plurality of frequency divider units, and is used for combining the single-frequency radio-frequency signals with the same phase and frequency in the plurality of frequency divider units and then transmitting the combined signals to the corresponding transceiver for receiving the single-frequency radio-frequency signals.
In an alternative implementation, each of the combiner units further includes a second combiner sub-unit; the circuit further comprises a phase shifter element connected to the second combiner sub-element;
the phase shifter unit is connected with a first combiner subunit corresponding to the single-frequency radio-frequency signal with the obtained target phase and target frequency and is used for modifying the phases of the single-frequency radio-frequency signal with the target phase and target frequency; wherein the target phase is any one of the first phase and the second phase, and the target frequency is any one of the plurality of frequencies;
the second combiner subunit is respectively connected with the first combiner subunit corresponding to the single-frequency radio-frequency signal of the target phase and the target frequency after the phase modification and the first combiner subunit corresponding to the single-frequency radio-frequency signal of the target frequency except the target phase, and is used for combining the single-frequency radio-frequency signal of the target phase and the target frequency after the phase modification with the single-frequency radio-frequency signal of the target frequency except the target phase.
In an alternative implementation, the length of the feed conductor connected between each of the plurality of antenna elements and each of the plurality of divider elements is the same.
In an alternative implementation, the length of the transmission line to which each of the plurality of first combiner sub-units is connected to the plurality of frequency divider units is the same.
In an optional implementation, if the first phase is different from the second phase by 90 degrees, the phase shifter unit is specifically configured to shift the phase of the single-frequency radio frequency signal of the target phase and the target frequency by 90 degrees.
In a second aspect, there is provided a feeding apparatus of a multi-frequency array antenna, the feeding apparatus comprising the feeding circuit of any one of the first aspect, an array antenna, and a plurality of transceivers.
In a third aspect, a feeding method of a multi-frequency array antenna is provided, the method including:
acquiring multi-frequency radio frequency signals with multiple frequencies received by multiple antenna array elements through a feed wire;
receiving a multi-frequency radio frequency signal having a plurality of frequencies;
dividing the received multi-frequency radio frequency signals into a plurality of single-frequency radio frequency signals according to different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
In an alternative implementation, dividing the received multi-frequency rf signal into multiple single-frequency rf signals according to different frequencies includes:
combining single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
In an alternative implementation, the multi-frequency radio frequency signal comprises a first phase multi-frequency radio frequency signal and a second phase multi-frequency radio frequency signal;
dividing the received multi-frequency radio frequency signal into a plurality of single-frequency radio frequency signals according to different frequencies, comprising:
dividing the multi-frequency radio frequency signal of the first phase or the multi-frequency radio frequency signal of the second phase into a plurality of corresponding single-frequency radio frequency signals of the first phase or a plurality of corresponding single-frequency radio frequency signals of the second phase according to different frequencies;
combining the single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies, wherein the method comprises the following steps:
combining single-frequency radio-frequency signals with the same phase and the same frequency in the plurality of single-frequency radio-frequency signals with the first phase or the plurality of single-frequency radio-frequency signals with the second phase;
before transmitting the single-frequency rf signal of each frequency to a transceiver that receives the single-frequency rf signal, the method further includes:
modifying the target phase and the phase of the single-frequency radio frequency signal of the target frequency; the target phase is any one of the first phase and the second phase, and the target frequency is any one of the plurality of frequencies;
combining the target phase and the single-frequency radio-frequency signal of the target frequency after the phase modification with the single-frequency radio-frequency signals of the target frequency except the target phase.
In an optional implementation, if the first phase is different from the second phase by 90 degrees, modifying the phase of the single-frequency rf signal of the target phase and the target frequency includes:
and moving the target phase and the phase of the single-frequency radio-frequency signal of the target frequency by 90 degrees.
The feed circuit of the multi-frequency array antenna provided by the embodiment of the invention comprises at least one antenna array element and at least one frequency divider unit which is connected with the at least one antenna array element in a one-to-one corresponding manner; the frequency divider unit is used for acquiring multi-frequency radio frequency signals with multiple frequencies received by at least one antenna array element through a feed wire; dividing the multi-frequency radio frequency signals received by the corresponding antenna array elements into a plurality of single-frequency radio frequency signals according to different frequencies; and each combiner unit is respectively connected with the plurality of frequency divider units and is used for combining the single-frequency radio-frequency signals with the same frequency in the plurality of frequency divider units and then transmitting the combined signals to the corresponding transceiver for receiving the single-frequency radio-frequency signals. Compared with the feed structure formed by microstrip lines in the prior art, the feed structure of the feed circuit is simple, and the miniaturization of the feed structure is realized.
Drawings
Fig. 1 is a schematic structural diagram of a feeding circuit of a multi-frequency array antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a feeding circuit of another multi-frequency array antenna according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a feeding circuit of a multi-frequency array antenna according to another embodiment of the present invention;
fig. 4 is a schematic structural diagram of a feeding circuit of a multi-frequency array antenna according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of an antenna array according to an embodiment of the present invention;
fig. 6 is a schematic flowchart of a feeding method of a multi-frequency array antenna according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without any creative effort belong to the protection scope of the present application.
Fig. 1 is a schematic structural diagram of a feeding circuit of a multi-frequency array antenna according to an embodiment of the present invention. As shown in fig. 1, the Circuit is disposed on a Printed Circuit Board (PCB), which may include: and at least one frequency divider unit connected with at least one antenna array element in a one-to-one correspondence manner. The divider assembly is connected to the antenna array through a feed conductor, which may be a microstrip line or other conductor capable of receiving radio frequency signals.
Each frequency divider unit is used for acquiring multi-frequency radio frequency signals with multiple frequencies received by at least one antenna array element through a feed wire; dividing the multi-frequency radio frequency signals received by the corresponding antenna array elements into a plurality of single-frequency radio frequency signals according to different frequencies, and transmitting the single-frequency radio frequency signals of each frequency to a transceiver correspondingly receiving the single-frequency radio frequency signals.
In order to maintain the phase consistency of the corresponding multi-frequency radio frequency signals received by at least one antenna array element, the lengths of feed wires connected between each antenna array element and each frequency divider need to be kept the same, if the lengths are all L, the L is a positive integer.
Optionally, when there are multiple antenna elements, the circuit includes multiple divider units, and in order to reduce the area of the PCB board occupied by the circuit, the circuit may further include: a plurality of combiner units in one-to-one correspondence with the plurality of frequencies;
as shown in fig. 2, each combiner unit is connected to a plurality of frequency divider units through transmission wires;
each combiner unit is used for combining the single-frequency radio-frequency signals with the same frequency in the plurality of frequency divider units and then transmitting the combined signals to the corresponding transceiver for receiving the single-frequency radio-frequency signals.
The transmission wire is a transmission line capable of transmitting radio frequency signals, namely a wiring on the PCB.
Further, for interference resistance, the directional gain of the antenna array is improved, as shown in fig. 3, the antenna elements in the antenna array may be divided into at least one first antenna sub-element and at least one second antenna sub-element; the plurality of frequency divider units are respectively connected with at least one first antenna sub-array element and at least one second antenna sub-array element in the plurality of antenna array elements in a one-to-one correspondence manner;
at least one first antenna sub-array element for receiving the multi-frequency radio frequency signals of the first phase in a one-to-one correspondence manner;
at least one second antenna sub-array element for receiving the multi-frequency radio frequency signals of the second phase in a one-to-one correspondence manner; wherein the first phase is different from the second phase;
at this time, each frequency divider unit connected with at least one first antenna sub-array element in a one-to-one correspondence manner is specifically used for acquiring a multi-frequency radio frequency signal of a first phase sent by the corresponding first antenna sub-array element through a feed conductor; dividing the multi-frequency radio frequency signals of the first phase received by the corresponding first antenna sub-array element into a plurality of single-frequency radio frequency signals according to different frequencies;
each frequency divider unit which is connected with at least one second antenna sub-array element in a one-to-one correspondence manner is specifically used for acquiring a multi-frequency radio frequency signal of a second phase sent by the corresponding second antenna sub-array element through a feed wire; and dividing the multi-frequency radio frequency signals of the second phase received by the corresponding second antenna sub-array elements into a plurality of single-frequency radio frequency signals according to different frequencies.
Each combiner unit may include a plurality of first combiner sub-units;
each first combiner subunit is connected with the plurality of frequency divider units, and is used for combining the single-frequency radio-frequency signals with the same phase and frequency in the plurality of frequency divider units and then transmitting the combined signals to the corresponding transceiver for receiving the single-frequency radio-frequency signals. The transmission wires connected with each first combiner subunit and the plurality of frequency divider units in the first combiner subunits are the same in length.
Optionally, each combiner unit further includes a second combiner sub-unit; the circuit further comprises a phase shifter element connected to the second combiner sub-element;
the phase shifter unit is connected with a first combiner subunit corresponding to the single-frequency radio-frequency signal with the obtained target phase and target frequency and is used for modifying the phases of the single-frequency radio-frequency signal with the target phase and target frequency; the target phase is any one of the first phase and the second phase, and the target frequency is any one of a plurality of frequencies;
the second combiner subunit is respectively connected with the first combiner subunit corresponding to the single-frequency radio-frequency signal of the target phase and the target frequency after the phase modification and the first combiner subunit corresponding to the single-frequency radio-frequency signal of the target frequency except the target phase, and is used for combining the single-frequency radio-frequency signal of the target phase and the target frequency after the phase modification and the single-frequency radio-frequency signal of the target frequency except the target phase.
Optionally, if the first phase is different from the second phase by 90 degrees, the phase shifter unit is specifically configured to shift the phase of the single-frequency radio frequency signal of the target phase and the target frequency by 90 degrees.
In one example, as shown in fig. 4, taking the multi-frequency signal as a dual-frequency signal, where the first phase is 90 degrees out of phase with the second phase, the antenna array includes 2 first antenna sub-array elements, such as
Wherein, the 4 frequency dividers comprise a
the 4 first combiners comprise a combiner f1_1, a combiner f2_1, a combiner f1_1 'and a combiner f2_ 1';
the 2 second combiners include a combiner f1_2 and a combiner f2_ 2;
the 2 90-degree phase shifters include phase shifter f1 and phase shifter f 2;
a first antenna sub-array element for receiving a first phase multi-frequency radio frequency signal with dual frequencies (such as frequency f1 and frequency f 2);
a second antenna sub-array element for receiving a multi-frequency radio frequency signal of a second phase and a dual frequency (such as frequency f1 and frequency f 2);
the first antenna sub-array element can be a horizontally polarized antenna sub-array element, namely, the
The first port of the
The
the frequency divider 1 'and the frequency divider 2' divide the multi-frequency radio frequency signal of the first phase received by the corresponding first antenna sub-array element into a single-frequency radio frequency signal f1 and a single-frequency radio frequency signal f2 of the corresponding second phase according to different frequencies;
the first port of the combiner f1_1 is connected to the second port of the
a first port of the combiner f2_1 is connected with a third port of the
The combiner f1_1 is configured to combine the single-frequency radio-frequency signal f1 in the first phase; the combiner f2_1 is used for combining the single-frequency radio-frequency signal f2 of the first phase;
correspondingly, the first port of the combiner f1_1 ' is connected to the second port of the frequency divider 1 ' through the transmission conductor c ', and the second port thereof is connected to the second port of the frequency divider 2 ' through the transmission conductor d '; the length of the transmission conductor c 'is the same as that of the transmission conductor d';
the first port of the combiner f2_1 ' is connected to the third port of the frequency divider 1 ' through a transmission conductor e ', and the second port thereof is connected to the third port of the frequency divider 2 ' through a transmission conductor f '; the length of the transmission conducting wire e 'is the same as that of the transmission conducting wire f';
the combiner f1_ 1' is used for combining the single-frequency radio-frequency signal f1 of the second phase; the combiner f2_ 1' is used for combining the single-frequency radio-frequency signal f2 of the second phase;
the first port of the combiner f1_2 is connected to the third port of the combiner f1_1 through a transmission wire g, the second port of the combiner f1_2 is connected to the combiner f1_1 'through a phase shifter f1 on the transmission wire g', and the third port of the combiner f1_2 is connected to the
The phase shifter f1 shifts the phase of the single-frequency radio-frequency signal f1 of the second phase by 90 degrees; the combiner f1_2 combines the single-frequency radio-frequency signal f1 of the first phase with the shifted single-frequency radio-frequency signal f1 of the second phase, and sends the processed single-frequency radio-frequency signal f1 to the
a first port of the combiner f2_2 is connected with the combiner f2_1 through a phase shifter f1 on a transmission lead h, a second port of the combiner f2_2 is connected with a third port of the combiner f2_1 'through a transmission lead h', and a third port of the combiner f2_2 is connected with the transceiver 2 for receiving the single-frequency radio-frequency signal f 2.
The phase shifter f2 shifts the phase of the single-frequency radio frequency signal f2 of the first phase by 90 degrees; the combiner f2_2 combines the shifted single-frequency radio-frequency signal f1 of the first phase with the single-frequency radio-frequency signal f1 of the second phase, and sends the processed single-frequency radio-frequency signal f2 to the transceiver 2;
optionally, in order to maintain phase consistency of radio frequency signals transmitted in the PCB, lengths of the transmission line c 'and the transmission line c are kept consistent, a routing length of the transmission line d' and the transmission line d is kept consistent, a degree of the transmission line e 'and the transmission line e is kept consistent, and a length of the transmission line f' and the transmission line f is kept consistent.
It should be noted that the single-frequency rf signal f1 obtained by the combiner f1_2 forms right-handed circularly polarized waves, and the single-frequency rf signal f2 obtained by the combiner f2_2 forms left-handed circularly polarized waves, so that the single-frequency rf signal f1 and the single-frequency rf signal f2 do not interfere with each other.
Specifically, after the combiner f1_2 combines the single-frequency rf signal f1 in the first phase with the shifted single-frequency rf signal f1 in the second phase, a vector of the electric field E1 formed may be represented as:
E1＝x sinθ+y cosθ；
wherein x sin θ and y cos θ represent two orthogonal components of the electric field E1, respectively, x and y represent the magnitude of the orthogonal component of the electric field E1, and x and y are the same. When the theta is converted from 0 degree to 90 degree, the vector of the electric field E1 is rotated counterclockwise, which is called right-hand circularly polarized wave.
After the combiner f2_2 combines the shifted single-frequency rf signal f1 in the first phase with the single-frequency rf signal f1 in the second phase, a vector of an electric field E2 formed may be represented as:
E2＝x cosθ+y sinθ；
wherein x cos θ and y sin θ represent two orthogonal components of the electric field E2, respectively, x and y represent the magnitude of the orthogonal component of the electric field E2, and x and y are the same. When the theta is converted from 0 degree to 90 degree, the vector of the electric field E2 rotates clockwise, which is called left-handed circular polarized wave.
It should be noted that the above-mentioned process is a process in which the multi-frequency rf signal received by the multi-frequency array antenna is correspondingly processed and transmitted to the corresponding single-frequency rf signal transceiver through the feeding circuit, and since the process in which the multi-frequency rf signal is received by the multi-frequency array antenna and the process in which the multi-frequency rf signal is transmitted are inverse processes to each other, the corresponding process of the feeding circuit is also a corresponding inverse process, which is not described herein again in the embodiments of the present invention.
The feed circuit of the multi-frequency array antenna provided by the embodiment of the invention comprises at least one antenna array element and at least one frequency divider unit which is connected with the at least one antenna array element in a one-to-one corresponding manner; the frequency divider unit is used for acquiring multi-frequency radio frequency signals with multiple frequencies received by at least one antenna array element through a feed wire; dividing the multi-frequency radio frequency signals received by the corresponding antenna array elements into a plurality of single-frequency radio frequency signals according to different frequencies, and transmitting the single-frequency radio frequency signals of all the frequencies to the corresponding transceivers for receiving the single-frequency radio frequency signals. Compared with the prior art, the feed circuit realizes the miniaturization of the feed structure of the array antenna.
Corresponding to the above method, an embodiment of the present invention further provides a feeding method of a multi-frequency array antenna, as shown in fig. 6, where the method includes:
601, acquiring multi-frequency radio frequency signals with multiple frequencies received by multiple antenna array elements through a feed wire;
step 602, dividing the received multi-frequency radio frequency signal into a plurality of single-frequency radio frequency signals according to different frequencies;
step 603, transmitting the single-frequency rf signal of each frequency to a transceiver receiving the single-frequency rf signal correspondingly.
In an alternative implementation, dividing the received multi-frequency rf signal into multiple single-frequency rf signals according to different frequencies includes:
combining single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
In an alternative implementation, the multi-frequency radio frequency signal comprises a first phase multi-frequency radio frequency signal and a second phase multi-frequency radio frequency signal;
dividing the received multi-frequency radio frequency signal into a plurality of single-frequency radio frequency signals according to different frequencies, comprising:
dividing the multi-frequency radio frequency signal of the first phase or the multi-frequency radio frequency signal of the second phase into a plurality of corresponding single-frequency radio frequency signals of the first phase or a plurality of corresponding single-frequency radio frequency signals of the second phase according to different frequencies;
combining the single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies, wherein the method comprises the following steps:
combining single-frequency radio-frequency signals with the same phase and the same frequency in the plurality of single-frequency radio-frequency signals with the first phase or the plurality of single-frequency radio-frequency signals with the second phase;
before transmitting the single-frequency rf signal of each frequency to a transceiver that receives the single-frequency rf signal, the method further includes:
modifying the target phase and the phase of the single-frequency radio frequency signal of the target frequency; the target phase is any one of the first phase and the second phase, and the target frequency is any one of the plurality of frequencies;
combining the target phase and the single-frequency radio-frequency signal of the target frequency after the phase modification with the single-frequency radio-frequency signals of the target frequency except the target phase.
In an optional implementation, if the first phase is different from the second phase by 90 degrees, modifying the phase of the single-frequency rf signal of the target phase and the target frequency includes:
and moving the target phase and the phase of the single-frequency radio-frequency signal of the target frequency by 90 degrees.
Each method step in the method provided by the above embodiment of the present invention can be implemented by the function of each functional unit, and therefore, the specific process and beneficial effect of each method step in the feeding method of the multi-frequency array antenna provided by the embodiment of the present invention are not repeated herein.
An embodiment of the present invention further provides an electronic device, as shown in fig. 7, including a
A
the
acquiring multi-frequency radio frequency signals with multiple frequencies received by the multiple antenna elements through a feed wire;
dividing the received multi-frequency radio frequency signals into a plurality of single-frequency radio frequency signals according to different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
In an alternative implementation, dividing the received multi-frequency rf signal into multiple single-frequency rf signals according to different frequencies includes:
combining single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies;
and transmitting the single-frequency radio frequency signals of each frequency to a transceiver which correspondingly receives the single-frequency radio frequency signals.
In an alternative implementation, the multi-frequency radio frequency signal comprises a first phase multi-frequency radio frequency signal and a second phase multi-frequency radio frequency signal;
dividing the received multi-frequency radio frequency signal into a plurality of single-frequency radio frequency signals according to different frequencies, comprising:
dividing the multi-frequency radio frequency signal of the first phase or the multi-frequency radio frequency signal of the second phase into a plurality of corresponding single-frequency radio frequency signals of the first phase or a plurality of corresponding single-frequency radio frequency signals of the second phase according to different frequencies;
combining the single-frequency radio-frequency signals with the same frequency in the multiple single-frequency radio-frequency signals to obtain single-frequency radio-frequency signals with different frequencies, wherein the method comprises the following steps:
combining single-frequency radio-frequency signals with the same phase and the same frequency in the plurality of single-frequency radio-frequency signals with the first phase or the plurality of single-frequency radio-frequency signals with the second phase;
before transmitting the single-frequency rf signal of each frequency to a transceiver that receives the single-frequency rf signal, the method further includes:
modifying the target phase and the phase of the single-frequency radio frequency signal of the target frequency; the target phase is any one of the first phase and the second phase, and the target frequency is any one of the plurality of frequencies;
combining the target phase and the single-frequency radio-frequency signal of the target frequency after the phase modification with the single-frequency radio-frequency signals of the target frequency except the target phase.
In an optional implementation, if the first phase is different from the second phase by 90 degrees, modifying the phase of the single-frequency rf signal of the target phase and the target frequency includes:
and moving the target phase and the phase of the single-frequency radio-frequency signal of the target frequency by 90 degrees.
The aforementioned communication bus may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The communication bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown, but this does not mean that there is only one bus or one type of bus.
The communication interface is used for communication between the electronic equipment and other equipment.
The Memory may include a Random Access Memory (RAM) or a Non-Volatile Memory (NVM), such as at least one disk Memory. Optionally, the memory may also be at least one memory device located remotely from the processor.
The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
Since the implementation and the beneficial effects of the problem solving of each device of the electronic device in the above embodiment can be realized by referring to each step in the embodiment shown in fig. 6, detailed working processes and beneficial effects of the electronic device provided by the embodiment of the present invention are not described herein again.
In yet another embodiment of the present invention, a computer-readable storage medium is further provided, which stores instructions that, when executed on a computer, cause the computer to execute the feeding method of the multi-frequency array antenna described in any one of the above embodiments.
In yet another embodiment, a computer program product containing instructions is provided, which when run on a computer causes the computer to execute the feeding method of the multi-frequency array antenna described in any of the above embodiments.
As will be appreciated by one of skill in the art, the embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, embodiments of the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the true scope of the embodiments of the present application.
It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if such modifications and variations of the embodiments of the present application fall within the scope of the claims of the embodiments of the present application and their equivalents, the embodiments of the present application are also intended to include such modifications and variations.
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