阅读说明：本技术 一种收发子系统高精度微波内定标器 (High-precision microwave internal calibrator for transceiver subsystem ) 是由 于勇 王莉莉 祝大龙 刘德喜 李凉海 赵明 韩月 于 2020-11-10 设计创作，主要内容包括：本发明提供一种收发子系统高精度微波内定标器,包括开关网络、发射通道、接收通道和衰减网络；发射通道接收中频发射信号转换为主信号发射,转换为向天线发射的发射校准信号,还可进行自校准；开关网络接收天线发出的接收校准信号转为中频接收信号,还可自校准；接收通道接收射频输入信号变频为中频接收信号输送。本发明是为了解决现有定标系统体积大、不能高稳定性输出和接收通道增益不能随温度波动的问题,提供一种收发子系统高精度微波内定标器,将五级开关、三级衰减器、校准源发射通道和接收通道集成于一体,由于产品采用模块化设计,各端口匹配良好,各部分通过刚性电缆互联,实现收发子系统高精度定标,同时满足系统环境条件需求。(The invention provides a high-precision microwave internal calibrator for a transceiver subsystem, which comprises a switch network, a transmitting channel, a receiving channel and an attenuation network, wherein the switch network is connected with the transmitting channel; the transmitting channel receives the intermediate frequency transmitting signal, converts the intermediate frequency transmitting signal into a main signal for transmitting, converts the main signal into a transmitting calibration signal for transmitting to an antenna, and can also carry out self calibration; the receiving calibration signal sent by the switching network receiving antenna is converted into an intermediate frequency receiving signal, and self calibration can be performed; the receiving channel receives a radio frequency input signal and converts the frequency of the radio frequency input signal into an intermediate frequency receiving signal for transmission. The invention aims to solve the problems that the existing calibration system is large in size and cannot output high stability and the gain of a receiving channel cannot fluctuate along with temperature, and provides a high-precision microwave internal calibrator for a transceiving subsystem.)

1. A transceiver subsystem high accuracy microwave internal standard ware which characterized in that: the device comprises a switching network (1) for gating, a transmitting channel (2), a receiving channel (3) and an attenuation network (4), wherein the transmitting channel (2), the receiving channel and the attenuation network are respectively electrically connected with the switching network (1);

the transmitting channel (2) is electrically connected with a system transmitting link, the transmitting channel (2) is used for receiving an intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and outputting the main signal to the system transmitting link, the transmitting channel (2) is used for receiving the intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and outputting the transmitting calibration signal to the switch network (1), and the main signal and the transmitting calibration signal are both radio frequency signals;

the receiving channel (3) is electrically connected with a system receiving link, the receiving channel (3) is used for receiving a radio frequency input signal sent by the system receiving link and converting the radio frequency input signal into an intermediate frequency receiving signal to output the intermediate frequency receiving signal to the outside, and the receiving channel (3) is used for receiving a receiving calibration signal output by the switch network (1) and converting the receiving calibration signal into the intermediate frequency receiving signal to output the intermediate frequency receiving signal to the outside;

the switch network (1) is connected to an antenna, the switch network (1) is configured to receive the transmit calibration signal sent by the transmit channel (2) and send the transmit calibration signal to the attenuation network (4), the switch network (1) is configured to receive the receive calibration signal from the antenna and send the receive calibration signal to the attenuation network (4), and the switch network (1) is configured to receive the receive calibration signal from the antenna and send the receive calibration signal to the receive channel (3); the switch network (1) is used for receiving the receiving calibration signal sent from the attenuation network (4) and sending the receiving calibration signal to the receiving channel (3);

the attenuation network (4) is configured to receive the transmit calibration signal sent by the switch network (1), attenuate the transmit calibration signal, generate the receive calibration signal, and output the receive calibration signal to the switch network (1), and the attenuation network (4) is configured to receive the receive calibration signal sent by the switch network (1) and attenuate the receive calibration signal.

2. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: the attenuation network (4) comprises a first attenuation module (41), a second attenuation module (42) and a third attenuation module (43) which are connected in sequence.

3. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: the switch network (1) comprises a first switch (11), a first switch module (12) and a second switch module (13) which are connected with the first switch (11) and have the same structure, wherein the first switch module (12) is electrically connected with the transmitting channel (2) and the attenuation network (4); the second switch module (13) is electrically connected with the receiving channel (3) and the attenuation network (4).

4. A transceiver subsystem high accuracy microwave internal calibrator according to claim 3, wherein: the first switch module (12) comprises a cascade of a primary switch and a secondary switch, and the first switch module (12) is independently packaged.

5. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: the attenuation network (4) and the switch network (1) are connected by rigid cables.

6. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: and a multi-stage temperature compensator is arranged in the receiving channel (3).

7. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: and high isolating switches are adopted at the input ports of the transmitting channel (2) and the receiving channel (3).

8. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: the radio frequency input signal and the receiving calibration signal are Ku/Ka frequency band radio frequency signals, and the receiving channel (3) is used for down-converting the received Ku/Ka frequency band radio frequency signals to an S frequency band and then down-converting the Ku/Ka frequency band radio frequency signals into the intermediate frequency receiving signals;

the receiving channel (3) comprises a first cavity used for down-converting the Ku/Ka frequency band radio frequency signal to the S frequency band and a second cavity used for down-converting the S frequency band to 120MHz intermediate frequency, and the attenuation network (4), the switch network (1), the first cavity and the second cavity are all independently formed into cavities by adopting an MIC process;

the intermediate frequency transmitting signal and the intermediate frequency receiving signal are 120MHz intermediate frequency signals.

9. The high-precision microwave internal calibrator for transceiver subsystem as recited in claim 1, wherein: the transmitting channel (2) comprises a first filter (21), a first power amplifier (22), a first mixer (23), a second filter (24), a second power amplifier (25) and a transmitting channel switch (26) which are connected in sequence;

the receiving channel (3) comprises an input switch (31), a third filter (32), a first compensator (33), a third power amplifier (34), a second compensator (35), a third mixer (36), a fourth power amplifier (37), a fourth mixer (38), a fifth power amplifier (39) and a third compensator (3a) which are connected in sequence.

10. The use method of the high-precision microwave internal calibrator for the transceiver subsystem as claimed in claim 1, wherein: the method comprises the following steps:

s1, the microwave inner calibrator receiving signal, proceeding to step S2 when receiving the intermediate frequency transmission signal from the outside, proceeding to step S3 when receiving the reception calibration signal for the TR module transmission channel calibration from the antenna, proceeding to step S4 when receiving the radio frequency input signal from the system reception chain;

s2, the transmitting channel (2) receives the intermediate frequency transmitting signal from the outside, and the step S21 is carried out when the main signal needs to be transmitted to the system transmitting link; step S22 is proceeded to when the transmitting calibration signal for calibration of the TR module receiving channel needs to be transmitted to the antenna; when self-calibration is required, the process proceeds to step S23;

s21, the transmitting channel (2) receives the intermediate frequency transmitting signal from the outside, and the intermediate frequency transmitting signal is converted into the main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and the main signal is sent to the system transmitting link, and the main signal is transmitted;

s22, the transmitting channel (2) receives the intermediate frequency transmitting signal from the outside, and the intermediate frequency transmitting signal is converted into the transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, the transmitting calibration signal is sent to the antenna through the switch network (1), and the TR component receives the signal for channel calibration and completes the signal transmission;

s23, the transmitting channel (2) receives the intermediate frequency transmitting signal, and converts the intermediate frequency transmitting signal into the transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, the transmitting calibration signal is sent to the attenuation network (4) through the switch network (1), the attenuation network (4) attenuates the transmitting calibration signal to form the receiving calibration signal, the receiving calibration signal is sent to the receiving channel (3) through the switch network (1), the receiving channel (3) converts the receiving calibration signal into the intermediate frequency receiving signal and outputs the intermediate frequency receiving signal to the outside, and self-calibration output is completed;

s3, the switch network (1) receives the receiving calibration signal sent by the antenna, when used for TR component transmitting channel calibration, the step proceeds to S31, and when used for self-calibration, the step proceeds to S32;

s31, the switch network (1) receives the receiving calibration signal sent by the antenna and sends the signal to the receiving channel (3), the receiving channel (3) receives the receiving calibration signal and converts the signal into the intermediate frequency receiving signal to be output to the outside, and the TR component transmitting channel calibration signal is transmitted;

s32, the switch network (1) receives the receiving calibration signal sent by the antenna and sends the signal to the attenuation network (4), the attenuation network (4) receives the receiving calibration signal and attenuates the signal, and the signal processing for self-calibration is completed;

s4, the receiving channel (3) receives the radio frequency input signal sent by the system receiving link and converts the radio frequency input signal into the intermediate frequency receiving signal which is transmitted to the outside, and the intermediate frequency receiving signal is transmitted.

Technical Field

The invention relates to the technical field of detection or calibration devices, in particular to a high-precision microwave internal calibrator for a transceiver subsystem.

Background

The transceiver subsystem obtains its own parameters through a high-precision calibrator, and the accuracy and stability of the parameters directly determine the measurement precision of the transceiver subsystem. The high-precision calibrator adopts a sensor in the system to measure relevant parameters such as transmitting power, receiving performance, TR component relative amplitude-phase error, internal environment temperature and the like of a transmitting-receiving subsystem, and a measurement result is downloaded to the ground in a form of telemetering data and is used for analyzing the on-orbit performance of the system. In the existing calibration system, the mechanical switch has the defects of large volume, large power consumption, complex multi-stage cascade, poor product integration and the like; the output of a calibration source is difficult to ensure the output of low stray and high stability; the receiving channel is restricted by the performance of chips such as an amplifier and the like, and the fluctuation of the gain along with the temperature cannot be ensured.

Disclosure of Invention

The invention aims to solve the problems that the existing calibration system is large in size and cannot output high stability and the gain of a receiving channel cannot fluctuate along with temperature, and provides a high-precision microwave internal calibrator for a transceiving subsystem.

The invention provides a high-precision microwave internal calibrator for a transceiver subsystem, which comprises: the system comprises a switch network for gating, a transmitting channel, a receiving channel and an attenuation network, wherein the transmitting channel, the receiving channel and the attenuation network are respectively electrically connected with the switch network;

the transmitting channel is electrically connected with a system transmitting link, the transmitting channel is used for receiving an intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, outputting the main signal to the system transmitting link, the transmitting channel is used for receiving the intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and outputting the transmitting calibration signal to the switch network, and the main signal and the transmitting calibration signal are radio frequency signals;

the receiving channel is electrically connected with the system receiving link, is used for receiving a radio frequency input signal sent by the system receiving link and converting the radio frequency input signal into an intermediate frequency receiving signal to be output to the outside, and is used for receiving a receiving calibration signal output by the switching network and converting the receiving calibration signal into the intermediate frequency receiving signal to be output to the outside;

the switch network is connected with the antenna, the switch network is used for receiving the transmitting calibration signal sent by the transmitting channel and sending the transmitting calibration signal to the attenuation network, the switch network is used for receiving the receiving calibration signal from the antenna and sending the receiving calibration signal to the attenuation network, and the switch network is used for receiving the receiving calibration signal from the antenna and sending the receiving calibration signal to the receiving channel; the switch network is used for receiving the receiving calibration signal sent from the attenuation network and sending the receiving calibration signal to a receiving channel;

the attenuation network is used for receiving the transmitting calibration signal sent by the switch network, attenuating the transmitting calibration signal to generate a receiving calibration signal and outputting the receiving calibration signal to the switch network, and the attenuation network is used for receiving and attenuating the receiving calibration signal sent by the switch network.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem, which is characterized in that as an optimal mode, a switch network comprises a first switch, a first switch module and a second switch module, wherein the first switch module and the second switch module are connected with the first switch and have the same structure; the second switch module is electrically connected with the receiving channel and the attenuation network.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem, which is used as an optimal mode, wherein a rigid cable is adopted for connecting an attenuation network and a switch network.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem.

The invention relates to a high-precision microwave internal calibrator for a transmitting-receiving subsystem.

The invention relates to a high-precision microwave internal calibrator for a transceiving subsystem, which is used as an optimal mode, wherein a radio frequency input signal and a receiving calibration signal are Ku/Ka frequency band radio frequency signals, and a receiving channel is used for carrying out down-conversion on the received Ku/Ka frequency band radio frequency signals to an S frequency band and then to an intermediate frequency receiving signal;

the receiving channel comprises a first cavity used for down-converting Ku/Ka frequency band radio-frequency signals to an S frequency band and a second cavity used for down-converting the S frequency band to 120MHz intermediate frequency, and the attenuation network, the switch network, the first cavity and the second cavity are independently formed into cavities by adopting an MIC (many integrated core) process;

the intermediate frequency transmitting signal and the intermediate frequency receiving signal are 120MHz intermediate frequency signals.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem, which is characterized in that as an optimal mode, a transmitting channel comprises a first filter, a first power amplifier, a first frequency mixer, a second filter, a second power amplifier and a transmitting channel switch which are sequentially connected;

the receiving channel comprises an input switch, a third filter, a first compensator, a third power amplifier, a second compensator, a third mixer, a fourth power amplifier, a fourth mixer, a fifth power amplifier and a third compensator which are connected in sequence.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem, which is used as an optimal mode, and the using method comprises the following steps:

s1, the microwave inner calibrator receives signals, and the method goes to step S2 when receiving intermediate frequency transmission signals from the outside, goes to step S3 when receiving a receiving calibration signal for TR component transmission channel calibration from an antenna, and goes to step S4 when receiving radio frequency input signals from a system receiving link;

s2, the transmitting channel receives the intermediate frequency transmitting signal from the outside, and the step S21 is carried out when the main signal is required to be transmitted to the system transmitting link; step S22 is entered when a transmission calibration signal for calibration of the TR module reception channel needs to be transmitted to the antenna; when self-calibration is required, the process proceeds to step S23;

s21, the transmitting channel receives the intermediate frequency transmitting signal from the outside, and the intermediate frequency transmitting signal is converted into a main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and the main signal is sent to a system transmitting link, and the main signal is transmitted;

s22, the transmitting channel receives the intermediate frequency transmitting signal from the outside, the intermediate frequency transmitting signal is filtered, amplified, mixed, secondarily filtered and secondarily amplified and then converted into a transmitting calibration signal, the transmitting calibration signal is sent to an antenna through a switch network, and the TR component receives the signal for channel calibration and completes the signal transmission;

s23, the transmitting channel receives the intermediate frequency transmitting signal, and converts the intermediate frequency transmitting signal into a transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, the transmitting calibration signal is sent to the attenuation network through the switch network, the attenuation network attenuates the transmitting calibration signal to form a receiving calibration signal, the receiving calibration signal is sent to the receiving channel through the switch network, the receiving channel converts the receiving calibration signal into an intermediate frequency receiving signal and outputs the intermediate frequency receiving signal to the outside, and self-calibration output is completed;

s3, the receiving calibration signal sent by the antenna is received by the switch network, when the calibration signal is used for the calibration of the transmitting channel of the TR component, the step S31 is carried out, and when the calibration signal is used for the self-calibration, the step S32 is carried out;

s31, receiving calibration signals sent by the switch network receiving antenna and sending the calibration signals to a receiving channel, wherein the receiving channel receives the calibration signals, converts the calibration signals into intermediate frequency receiving signals and outputs the intermediate frequency receiving signals to the outside, and the TR component transmitting channel completes the transmission of the calibration signals;

s32, receiving the calibration signal sent by the switch network receiving antenna and sending the calibration signal to the attenuation network, receiving the calibration signal by the attenuation network and attenuating the calibration signal, and completing the signal processing for self-calibration;

and S4, the receiving channel receiving system receives the radio frequency input signal sent by the link and converts the radio frequency input signal into an intermediate frequency receiving signal to be transmitted to the outside, and the intermediate frequency receiving signal is transmitted.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem, which comprises a switch network, an attenuation network, a transmitting channel and a receiving channel, wherein:

switching the network: the calibration device consists of a switch 1 and two switches 2, and a transmitting calibration signal is output through a switch network through a transmitting channel and is supplied to an antenna network to calibrate a receiving channel of a T/R component; and the received calibration signal enters a receiving channel through the switch network to calibrate a transmitting channel of the T/R component.

Attenuation network: the device consists of three attenuation modules, wherein the attenuation adjustable range of each module is 30dB, the attenuation adjustable range of each module is interconnected with a switch network through a switch, calibration signals transmitted by a transmitting channel are received, the dynamic state of the whole link is simulated, and the calibration signals enter a receiving channel.

Emission channel: and performing up-conversion on the 120MHz intermediate frequency transmitting signal fin twice, performing up-conversion on the 120MHz intermediate frequency transmitting signal fin to an S frequency band, performing up-conversion on the S frequency band to a Ku/Ka frequency band radio frequency signal, performing amplification and filtering, pushing a final amplifier to saturation, wherein the saturation depth is 3dB, and switching to a main signal ft or a transmitting calibration signal frt through a switch.

Receiving a channel: the method comprises the steps of carrying out down-conversion on a received Ku/Ka frequency band radio frequency signal twice, respectively receiving a Ku/Ka frequency band calibration signal from a switch network and an attenuation network, carrying out down-conversion to an S frequency band, and carrying out down-conversion from the S frequency band to a 120MHz intermediate frequency receiving signal fout, wherein the signals comprise amplification, filtering and the like, a temperature compensator is reasonably designed in a channel, the gain stability of the temperature compensator is controlled, and the gain fluctuation in a full temperature range is less than or equal to 0.5 dB.

In the high-precision microwave internal calibrator for the transceiving subsystem, the switching network, the attenuation network, the S-to-Ku/Ka frequency band up-conversion and the Ku/Ka frequency band-to-S down-conversion adopt MIC (many integrated core) technology to independently form a cavity, and on the premise of not influencing the electrical property, the cavity is locally hollowed out, so that the increase of the volume and the weight is effectively reduced, the modules are connected by adopting rigid cables, and the special-shaped design ensures enough turning radius in a limited space and improves the reliability.

The invention relates to a high-precision microwave internal calibrator for a transceiver subsystem, which comprises a switch network, an attenuation network, a transmitting channel and a receiving channel, and specifically comprises the following steps:

(1) the 120MHz intermediate frequency transmitting signal fin is input to a transmitting channel, two paths of radio frequency signals ft (main signal) and frt (calibration signal) are output through filtering, an amplifier, frequency mixing, re-filtering, re-amplifying and switching, the signals are supplied to a main link and a calibration link through switching of a switch respectively, a final amplifier before the switch is pushed to a saturated state, the saturation depth of the amplifier is pushed to 3-5 dB through adjusting the attenuation value of the link, stray indexes of the transmitting channel are guaranteed, and the stability of output signals is guaranteed.

(2) Transmitting a calibration signal frt to enter a switch network, after passing through a switch 1 and a switch 2, dividing into two, supplying one path of frt1 to an antenna for calibrating each receiving channel of a phased array transceiver subsystem TR component, and inputting one path of frt2 to an attenuation network for self calibration of the scaler.

(3) The attenuation network receives the transmitting calibration signal frt2 of the switch network, adjusts the signal intensity through attenuation presetting, outputs a receiving calibration signal frr2 to enter a receiving channel of the scaler, and carries out self calibration of the scaler.

(4) The receiving calibration signal frr1 received by the antenna passes through the switch 1 and the switch 2 of the switch network, the signal is divided into two, one path of the receiving calibration signal frr enters a receiving channel to calibrate each transmitting channel of the TR component of the phased array transceiving subsystem, one path of the receiving calibration signal frr2 is connected with the attenuation network, and when the switch is switched to frr2, the attenuation of the attenuation network is preset to be maximum so as to achieve a good matching effect.

Compared with the prior art, the invention has the following beneficial effects:

(1) the switch network in the invention adopts multi-stage switch cascade, each switch is realized by combining bare chip design with MIC micro-assembly process, the independently packaged modules are interconnected through high-isolation rigid cables, and the rigid cables are specially shaped, thereby realizing the switch network with high isolation, low insertion loss, miniaturization and high reliability.

(2) The attenuation network adopts independent packaging modules of an MIC (many integrated core) micro-assembly process for cascade connection, adopts high-isolation rigid cables for interconnection, adopts special shaping design for the rigid cables, saves space, ensures reliability and realizes the adjustable attenuation network with high dynamic range.

(3) The invention has stable output signal of the transmitting channel, the power fluctuation is less than 0.5dB in the range of full temperature (-10 to +45 ℃), the receiving channel adopts a multi-stage temperature compensator to perform reverse compensation on the performance of the amplifier, the gain is as high as a receiving channel of 60dB, the gain fluctuation is less than 0.5dB in the range of full temperature (-10 to +45 ℃), in addition, the output of the transmitting channel and the input of the receiving channel both adopt high-isolation switches, and the invention can rapidly switch the main signal and the calibration signal, thereby ensuring the receiving and transmitting isolation during calibration.

Drawings

FIG. 1 is a system link diagram of an embodiment 1 of a high-precision microwave internal calibrator for a transceiver subsystem;

FIG. 2 is a system link diagram of an embodiment 2 of a high-precision microwave internal calibrator for a transceiver subsystem;

FIG. 3 is a link diagram of a transmitting channel of embodiment 2 of a high-precision microwave internal calibrator for a transceiver subsystem;

FIG. 4 is a layout diagram of a switching network and an attenuation network of embodiment 2 of a high-precision microwave internal calibrator for a transceiver subsystem;

FIG. 5 is a receiving channel link diagram of the embodiment 2 of the high-precision microwave internal calibrator for the transceiving subsystem;

fig. 6 is a flow chart of a method for using the transceiver subsystem high-precision microwave internal calibrator in embodiments 1-2.

Reference numerals:

1. a switching network; 11. a first switch; 12. a first switch module; 13. a second switch module; 2. a transmission channel; 21. a first filter; 22. a first power amplifier; 23. A first mixer; 24. a second filter; 25. a second power amplifier; 26. a transmit channel switch; 3. a receiving channel; 31. an input switch; 32. a third filter; 33. a first compensator; 34. a third power amplifier; 35. a second compensator; 36. a third mixer; 37. a fourth power amplifier; 38. a fourth mixer; 39. a fifth power amplifier; 3a, a third compensator; 4. an attenuation network; 41. a first attenuation module; 42. a second attenuation module; 43. and a third attenuation module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1

As shown in fig. 1, a high-precision microwave internal calibrator for a transceiver subsystem comprises a switching network 1 for gating, a transmitting channel 2, a receiving channel 3 and an attenuation network 4, wherein the transmitting channel 2, the receiving channel 3 and the attenuation network are respectively electrically connected with the switching network 1;

the switch network 1 is connected with an antenna, the switch network 1 is used for receiving the transmitting calibration signal sent by the transmitting channel 2 and sending the transmitting calibration signal to the attenuation network 4, the switch network 1 is used for receiving the receiving calibration signal from the antenna and sending the receiving calibration signal to the attenuation network 4, and the switch network 1 is used for receiving the receiving calibration signal from the antenna and sending the receiving calibration signal to the receiving channel 3; the switch network 1 is used for receiving the receiving calibration signal sent from the attenuation network 4 and sending the receiving calibration signal to the receiving channel 3;

the transmitting channel 2 is electrically connected with a system transmitting link, the transmitting channel 2 is used for receiving an intermediate frequency transmitting signal, and converting the intermediate frequency transmitting signal into a main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and outputting the main signal to the system transmitting link, the transmitting channel 2 is used for receiving the intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and outputting the transmitting calibration signal to the switch network 1, and the main signal and the transmitting calibration signal are both radio frequency signals;

the receiving channel 3 is electrically connected with the system receiving link, the receiving channel 3 is used for receiving a radio frequency input signal sent by the system receiving link and converting the radio frequency input signal into an intermediate frequency receiving signal to output the intermediate frequency receiving signal to the outside, and the receiving channel 3 is used for receiving a receiving calibration signal output by the switch network 1 and converting the receiving calibration signal into the intermediate frequency receiving signal to output the intermediate frequency receiving signal to the outside;

the attenuation network 4 is used for receiving the transmitting calibration signal sent by the switch network 1, attenuating the transmitting calibration signal to generate a receiving calibration signal, and outputting the receiving calibration signal to the switch network 1, and the attenuation network 4 is used for receiving and attenuating the receiving calibration signal sent by the switch network 1.

Example 2

As shown in fig. 2, a high-precision microwave internal calibrator for a transceiver subsystem comprises a switching network 1 for gating, a transmitting channel 2, a receiving channel 3 and an attenuation network 4, wherein the transmitting channel 2, the receiving channel 3 and the attenuation network are respectively electrically connected with the switching network 1;

the switch network 1 is connected with an antenna, the switch network 1 is used for receiving the transmitting calibration signal sent by the transmitting channel 2 and sending the transmitting calibration signal to the attenuation network 4, the switch network 1 is used for receiving the receiving calibration signal from the antenna and sending the receiving calibration signal to the attenuation network 4, and the switch network 1 is used for receiving the receiving calibration signal from the antenna and sending the receiving calibration signal to the receiving channel 3; the switch network 1 is used for receiving the receiving calibration signal sent from the attenuation network 4 and sending the receiving calibration signal to the receiving channel 3;

the switch network 1 comprises a first switch 11, a first switch module 12 and a second switch module 13 which are connected with the first switch 11 and have the same structure, wherein the first switch module 12 is electrically connected with the transmitting channel 2 and the attenuation network 4; the second switch module 13 is electrically connected with the receiving channel 3 and the attenuation network 4;

the first switch module 12 comprises a cascade connection primary switch and a cascade connection secondary switch, and the first switch module 12 is independently packaged;

the transmitting channel 2 is electrically connected with a system transmitting link, the transmitting channel 2 is used for receiving an intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, outputting the main signal to the system transmitting link through the transmitting channel switch 26, the transmitting channel 2 is used for receiving the intermediate frequency transmitting signal, converting the intermediate frequency transmitting signal into a transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, outputting the transmitting calibration signal to the switch network 1, pushing the second power amplifier 25 in front of the transmitting channel switch 26 to a saturated state, pushing the saturation depth of the second power amplifier to 3-5 dB by adjusting the link attenuation value, and the main signal and the transmitting calibration signal are radio frequency signals; the input port of the transmitting channel 2 adopts a high isolating switch;

as shown in fig. 3, the transmission channel 2 includes a first filter 21, a first power amplifier 22, a first mixer 23, a second filter 24, a second power amplifier 25, and a transmission channel switch 26, which are connected in sequence;

the receiving channel 3 is electrically connected with the system receiving link, the receiving channel 3 is used for receiving a radio frequency input signal sent by the system receiving link and converting the radio frequency input signal into an intermediate frequency receiving signal to output the intermediate frequency receiving signal to the outside, and the receiving channel 3 is used for receiving a receiving calibration signal output by the switch network 1 and converting the receiving calibration signal into the intermediate frequency receiving signal to output the intermediate frequency receiving signal to the outside; a multi-stage temperature compensator is arranged in the receiving channel 3 to control the gain stability of the receiving channel, and the gain fluctuation of 80dB in the full temperature range is less than or equal to 0.5 dB; the input port of the receiving channel 3 adopts a high isolating switch;

the radio frequency input signal and the receiving calibration signal are Ku/Ka frequency band radio frequency signals, and the receiving channel 3 is used for down-converting the received Ku/Ka frequency band radio frequency signals to an S frequency band and then to an intermediate frequency receiving signal;

the receiving channel 3 comprises a first cavity for down-converting the Ku/Ka frequency band radio frequency signal to the S frequency band and a second cavity for down-converting the S frequency band to 120MHz intermediate frequency, as shown in fig. 4, the attenuation network 4, the switch network 1, the first cavity and the second cavity are all independently formed into cavities by adopting an MIC process;

the intermediate frequency transmitting signal and the intermediate frequency receiving signal are both 120MHz intermediate frequency signals;

as shown in fig. 5, the reception channel 3 includes an input switch 31, a third filter 32, a first compensator 33, a third power amplifier 34, a second compensator 35, a third mixer 36, a fourth power amplifier 37, a fourth mixer 38, a fifth power amplifier 39, and a third compensator 3a, which are connected in this order;

the attenuation network 4 is used for receiving the transmitting calibration signal sent by the switch network 1, adjusting the signal intensity through attenuation presetting, generating a receiving calibration signal after attenuation, outputting the receiving calibration signal to the switch network 1, and the attenuation network 4 is used for receiving the receiving calibration signal sent by the switch network 1, presetting the attenuation of the attenuation network to the maximum, and attenuating the signal for self-calibration;

the attenuation network 4 comprises a first attenuation module 41, a second attenuation module 42 and a third attenuation module 43 which are connected in sequence;

the attenuation network 4 and the switch network 1 are connected by rigid cables.

The method of use of examples 1-2, as shown in figure 6, comprises the steps of:

s1, the microwave inner calibrator receives signals, and the method goes to step S2 when receiving intermediate frequency transmission signals from the outside, goes to step S3 when receiving a receiving calibration signal for TR component transmission channel calibration from an antenna, and goes to step S4 when receiving radio frequency input signals from a system receiving link;

s2, the transmitting channel 2 receives the intermediate frequency transmitting signal from the outside, and the step S21 is carried out when the main signal is required to be transmitted to the system transmitting link; step S22 is entered when a transmission calibration signal for calibration of the TR module reception channel needs to be transmitted to the antenna; when self-calibration is required, the process proceeds to step S23;

s21, the transmitting channel 2 receives the intermediate frequency transmitting signal from the outside, and the intermediate frequency transmitting signal is converted into a main signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, and the main signal is sent to a system transmitting link, and the main signal is transmitted;

s22, the transmitting channel 2 receives the intermediate frequency transmitting signal from the outside, and the intermediate frequency transmitting signal is converted into a transmitting calibration signal after filtering, amplifying, mixing, secondary filtering and secondary amplifying, the transmitting calibration signal is sent to the antenna through the switch network 1, and the TR component receives the signal for channel calibration and completes the signal transmission;

s23, the transmitting channel 2 receives the intermediate frequency transmitting signal, carries out filtering, amplifying, frequency mixing, secondary filtering and secondary amplifying, then converts the intermediate frequency transmitting signal into a transmitting calibration signal, the transmitting calibration signal is sent to the attenuation network 4 through the switch network 1, the attenuation network 4 attenuates the transmitting calibration signal to form a receiving calibration signal, the receiving calibration signal is sent to the receiving channel 3 through the switch network 1, the receiving channel 3 converts the frequency of the receiving calibration signal into an intermediate frequency receiving signal, the intermediate frequency receiving signal is output to the outside, and self-calibration output is completed;

s3, the switch network 1 receives the receiving calibration signal sent by the antenna, when used as the TR component transmitting channel calibration, the step proceeds to S31, when used as the self-calibration, the step proceeds to S32;

s31, the switch network 1 receives the receiving calibration signal sent by the antenna and sends the signal to the receiving channel 3, the receiving channel 3 receives the receiving calibration signal and converts the signal into an intermediate frequency receiving signal to be output to the outside, and the TR component transmitting channel calibration signal is transmitted;

s32, the switch network 1 receives the receiving calibration signal sent by the antenna and sends the signal to the attenuation network 4, the attenuation network 4 receives the receiving calibration signal and attenuates the signal, and the self-calibration is completed by signal processing;

s4, the receiving channel 3 receives the radio frequency input signal sent by the link and converts the radio frequency input signal into an intermediate frequency receiving signal to be transmitted to the outside, and the intermediate frequency receiving signal is transmitted

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.