阅读说明：本技术 一种内置天线系统及移动终端 (Built-in antenna system and mobile terminal ) 是由 黄龙海 梁超 林喆 于 2018-07-06 设计创作，主要内容包括：本发明提供一种内置天线系统及移动终端,涉及通信技术领域,所述内置天线系统包括：天线本体；与所述天线本体电连接的天线分频选择电路；与所述天线分频选择电路电连接的多个电路；分别与所述天线分频选择电路和多个电路电连接的控制器；其中,所述控制器用于根据多个电路的工作状态,控制所述天线分频选择电路选通。本发明的方案,实现了分集天线、DTV天线和FM天线的共存兼容设计,解决了外置拉杆天线占用空间大和不易携带的问题。(The invention provides a built-in antenna system and a mobile terminal, which relate to the technical field of communication, wherein the built-in antenna system comprises: an antenna body; the antenna frequency division selection circuit is electrically connected with the antenna body; a plurality of circuits electrically connected to the antenna crossover selection circuit; a controller electrically connected to the antenna division selection circuit and the plurality of circuits, respectively; the controller is used for controlling the antenna frequency division selection circuit to be gated according to the working states of the circuits. The scheme of the invention realizes the coexistence compatible design of the diversity antenna, the DTV antenna and the FM antenna, and solves the problems of large occupied space and difficult carrying of the external telescopic antenna.)

1. An internal antenna system for a mobile terminal, comprising:

an antenna body (1);

an antenna frequency division selection circuit (2) electrically connected to the antenna body (1);

a plurality of circuits electrically connected to the antenna division selection circuit (2);

a controller (6) electrically connected to the antenna division selection circuit (2) and the plurality of circuits, respectively;

the controller (6) is used for controlling the antenna frequency division selection circuit (2) to be gated according to the working states of a plurality of circuits.

2. The internal antenna system according to claim 1, wherein the plurality of circuits comprise: a diversity antenna circuit (3), a digital television circuit (4) and a frequency modulation circuit (5); or, a diversity antenna circuit (3) and a digital television circuit (4); or a diversity antenna circuit (3) and a frequency modulation circuit (5).

3. The internal antenna system according to claim 2,

when the plurality of circuits includes: when the diversity antenna circuit (3), the digital television circuit (4) and the frequency modulation circuit (5) are used, the antenna frequency division selection circuit (2) comprises: a high-frequency selection circuit (21), an intermediate-frequency selection circuit (22), and a low-frequency selection circuit (23);

when the plurality of circuits includes: when the diversity antenna circuit (3) and the digital television circuit (4) are used, the antenna frequency division selection circuit (2) comprises: a high frequency selection circuit (21) and an intermediate frequency selection circuit (22);

when the plurality of circuits includes: when the diversity antenna circuit (3) and the frequency modulation circuit (5) are used, the antenna frequency division selection circuit (2) comprises: a high-frequency selection circuit (21) and a low-frequency selection circuit (23);

the high-frequency selection circuit (21) is electrically connected with the diversity antenna circuit (3), the intermediate-frequency selection circuit (22) is electrically connected with the digital television circuit (4), and the low-frequency selection circuit (23) is electrically connected with the frequency modulation circuit (5).

4. The built-in antenna system according to claim 3, wherein the antenna division selection circuit (2) further comprises a first gate switch (24), an input terminal of the high frequency selection circuit (21) is electrically connected to the antenna body (1) through the first gate switch (24), and an output terminal of the high frequency selection circuit (21) is electrically connected to the diversity antenna circuit (3);

the controller (6) is used for controlling the first gating switch (24) to be closed when the diversity antenna circuit (3) is detected to be in a working state, so that the antenna body (1), the high-frequency selection circuit (21) and the diversity antenna circuit (3) form a passage.

5. The built-in antenna system according to claim 4, wherein the antenna division selecting circuit (2) further comprises a second gate switch (25), an input terminal of the intermediate frequency selecting circuit (22) is electrically connected to the antenna body (1) through the second gate switch (25), and an output terminal of the intermediate frequency selecting circuit (22) is electrically connected to the digital television circuit (4);

the controller (6) is used for controlling the second gating switch (25) to be closed when the digital television circuit (4) is detected to be in a working state, so that the antenna body (1), the intermediate frequency selection circuit (22) and the digital television circuit (4) form a passage.

6. The built-in antenna system according to claim 4 or 5, wherein the antenna frequency division selection circuit (2) further comprises a third gate switch (26), an input end of the low frequency selection circuit (23) is electrically connected with the antenna body (1) through the third gate switch (26), and an output end of the low frequency selection circuit (23) is electrically connected with the frequency modulation circuit (5);

the controller (6) is used for controlling the third gating switch (26) to be closed when the frequency modulation circuit (5) is detected to be in a working state, so that the antenna body (1), the low-frequency selection circuit (23) and the frequency modulation circuit (5) form a passage.

7. The built-in antenna system according to claim 1, characterized in that the antenna body (1) is a metal frame on top of the mobile terminal or on the side of the mobile terminal or a Laser Direct Structuring (LDS) antenna of the mobile terminal.

8. A mobile terminal, characterized in that it comprises an internal antenna system according to any of claims 1-7.

Technical Field

The invention belongs to the technical field of communication, and particularly relates to a built-in antenna system and a mobile terminal.

Background

At present, with the large demand for mobile Television functions and the demand for user experience improvement in the market and the popularization of full-screen mobile terminals, the antenna space of the mobile terminal is smaller and smaller, however, the antenna of the mobile terminal adopts a traditional Digital Television (DTV) antenna and Frequency Modulation (FM) antenna design method of an external telescopic antenna, and has the problems of easy loss and damage, high price cost, large occupied mobile terminal antenna space and the like, so that the traditional external telescopic antenna cannot meet the user demand and is not suitable for the full-screen mobile terminal.

Disclosure of Invention

The embodiment of the invention aims to provide an internal antenna system and a mobile terminal, so that the problems that an external telescopic antenna is easy to lose and damage, high in price cost and large in occupied space in the prior art are solved.

In order to achieve the above object, the present invention provides an internal antenna system including:

an antenna body;

the antenna frequency division selection circuit is electrically connected with the antenna body;

a plurality of circuits electrically connected to the antenna crossover selection circuit;

a controller electrically connected to the antenna division selection circuit and the plurality of circuits, respectively;

the controller is used for controlling the antenna frequency division selection circuit to be gated according to the working states of the circuits.

Wherein the plurality of circuits comprises: diversity antenna circuit, digital television circuit and frequency modulation circuit; or, a diversity antenna circuit and a digital television circuit; or a diversity antenna circuit and a frequency modulation circuit.

Wherein when the plurality of circuits comprises: when diversity antenna circuit, digital television circuit and frequency modulation circuit, antenna frequency division selection circuit includes: the circuit comprises a high-frequency selection circuit, an intermediate-frequency selection circuit and a low-frequency selection circuit;

when the plurality of circuits includes: when diversity antenna circuit and digital television circuit, the said antenna frequency division selective circuit includes: a high frequency selection circuit and an intermediate frequency selection circuit;

when the plurality of circuits includes: when diversity antenna circuit and frequency modulation circuit, antenna frequency division selection circuit includes: a high frequency selection circuit and a low frequency selection circuit;

the high-frequency selection circuit is electrically connected with the diversity antenna circuit, the intermediate-frequency selection circuit is electrically connected with the digital television circuit, and the low-frequency selection circuit is electrically connected with the frequency modulation circuit.

The antenna frequency selection circuit further comprises a first gating switch, the input end of the high-frequency selection circuit is electrically connected with the antenna body through the first gating switch, and the output end of the high-frequency selection circuit is electrically connected with the diversity antenna circuit;

the controller is used for controlling the first gating switch to be closed when the diversity antenna circuit is detected to be in a working state, so that the antenna body, the high-frequency selection circuit and the diversity antenna circuit form a passage.

The antenna frequency selection circuit further comprises a second gating switch, the input end of the intermediate frequency selection circuit is electrically connected with the antenna body through the second gating switch, and the output end of the intermediate frequency selection circuit is electrically connected with the digital television circuit;

and the controller is used for controlling the second gating switch to be closed when the digital television circuit is detected to be in a working state, so that the antenna body, the intermediate frequency selection circuit and the digital television circuit form a passage.

The antenna frequency selection circuit further comprises a third gating switch, the input end of the low-frequency selection circuit is electrically connected with the antenna body through the third gating switch, and the output end of the low-frequency selection circuit is electrically connected with the frequency modulation circuit;

the controller is used for controlling the third gating switch to be closed when the frequency modulation circuit is detected to be in a working state, so that the antenna body, the low-frequency selection circuit and the frequency modulation circuit form a passage.

The antenna body is a metal frame on the top of the mobile terminal or a metal frame on the side of the mobile terminal or a laser direct forming LDS antenna of the mobile terminal.

The embodiment of the invention also provides a mobile terminal which comprises the built-in antenna system.

The technical scheme of the invention at least has the following beneficial effects:

according to the embodiment of the invention, the antenna frequency division selection circuit is arranged in the mobile terminal, so that the antenna body is controlled to be communicated with one of the circuits through the antenna frequency division selection circuit according to the working states of the circuits connected with the antenna frequency division selection circuit, the circuits share one antenna body, the miniaturization and the built-in low cost of an antenna system are realized, the problems of inconvenience in carrying, easiness in losing and the like of an external antenna are solved, and the user experience of using a digital television and/or a radio on the mobile terminal is improved.

Drawings

Fig. 1 is a first schematic diagram of a built-in antenna system according to an embodiment of the present invention;

fig. 2 is a second schematic diagram of an internal antenna system according to an embodiment of the invention;

fig. 3 is a third schematic diagram of an internal antenna system according to an embodiment of the invention.

Description of reference numerals:

the antenna comprises an antenna body 1, an antenna frequency division selection circuit 2, an extension antenna circuit 3, a digital television circuit 4, a frequency modulation circuit 5, a controller 6, a high-frequency selection circuit 21, an intermediate-frequency selection circuit 22, a low-frequency selection circuit 23, a first gating switch 24, a second gating switch 25 and a third gating switch 26.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention provides an internal antenna system and a mobile terminal aiming at the problems that external pull rod DTV antenna and FM antenna are easy to lose and damage, high in cost and large in occupied space in the prior art, so that the DTV antenna and FM antenna and the existing diversity antenna share the antenna circuit design, the miniaturization and the internal low cost of the DTV antenna and FM antenna are realized, and the user experience is improved.

As shown in fig. 1 to 3, an embodiment of the present invention provides an internal antenna system, including:

an antenna body 1; an antenna frequency division selection circuit 2 electrically connected to the antenna body 1; a plurality of circuits electrically connected to the antenna division selection circuit 2, and a controller 6 electrically connected to the antenna division selection circuit 2 and the plurality of circuits, respectively; the controller 6 is configured to control the antenna division selecting circuit 2 to gate according to the operating states of the plurality of circuits.

The controller 6 of the embodiment of the present invention controls the antenna frequency division selection circuit 2 to gate according to the operating states of the plurality of circuits, so as to communicate the antenna circuit in the operating state with the antenna body 1, so that the signal received by the antenna body 1 is sent to the antenna circuit in the operating state through one path, thereby avoiding that the received signal is sent to the antenna circuit not in the operating state through another path, which results in the signal received by the antenna circuit in the operating state being an attenuated signal, improving the signal strength, and improving the experience of the user on the corresponding functions of the mobile terminal.

The antenna body 1 of the embodiment of the invention can be an antenna radiator on the existing mobile terminal and is used for receiving full-band signals, and the built-in antenna system is arranged on the basis of the existing antenna body, so that the development and design cost of the built-in antenna system is reduced. Preferably, the antenna body 1 is a metal frame on the top of the mobile terminal, and the metal frame on the side of the mobile terminal or a Laser-Direct-Structuring (LDS) antenna is used for the mobile terminal.

According to the embodiment of the invention, the antenna frequency division selection circuit 2 is used for connecting the plurality of circuits with the antenna body 1 respectively, so that a common antenna design is realized, the miniaturization and low cost of a built-in antenna system are met, and the experience of a user on the corresponding functions of the mobile terminal is improved.

Specifically, as shown in fig. 1, the plurality of circuits includes: a diversity antenna circuit 3, a digital television circuit 4 and a frequency modulation circuit 5; the antenna division selection circuit 2 includes: a high-frequency selection circuit 21, an intermediate-frequency selection circuit 22, and a low-frequency selection circuit 23; the high-frequency selection circuit 21 is electrically connected to the diversity antenna circuit 3, the intermediate-frequency selection circuit 22 is electrically connected to the digital television circuit 4, and the low-frequency selection circuit 23 is electrically connected to the frequency modulation circuit 5.

Specifically, as shown in fig. 2, the multiple antenna system includes: a diversity antenna circuit 3 and a digital television circuit 4; the antenna division selection circuit 2 includes: a high frequency selection circuit 21 and an intermediate frequency selection circuit 22. The high frequency selection circuit 21 is electrically connected to the diversity antenna circuit 3, and the intermediate frequency selection circuit 22 is electrically connected to the digital television circuit 4.

Specifically, as shown in fig. 3, the multiple antenna system includes: a diversity antenna circuit 3 and a frequency modulation circuit 5; the antenna division selection circuit 2 includes: a high frequency selection circuit 21 and a low frequency selection circuit 23. The high frequency selection circuit 21 is electrically connected to the diversity antenna circuit 3, and the low frequency selection circuit 23 is electrically connected to the frequency modulation circuit 5.

Here, it should be noted that the signal frequency selected by the high frequency selection circuit 21 is generally greater than 800MHz, and the signal frequency selected by the intermediate frequency selection circuit 22 is generally 400MHz to 800 MHz; the frequency of the signal selected by the low frequency selection circuit 23 is typically less than 400 MHz. In order to further reduce the design cost, the high frequency selection circuit 21, the intermediate frequency selection circuit 22, and the low frequency selection circuit 23 of the present embodiment may each be a frequency selection circuit composed of a capacitor and an inductor, wherein the capacitance value and the inductance value may be determined according to the maximum frequency value of the signal allowed to pass through.

Preferably, as shown in fig. 1, fig. 2 and fig. 3, the antenna dividing selection circuit further includes a first gate switch 24, an input end of the high frequency selection circuit 21 is electrically connected to the antenna body 1 through the first gate switch 24, and an output end of the high frequency selection circuit 21 is electrically connected to the diversity antenna circuit 3; the controller 6 is configured to control the first gating switch 24 to be closed when detecting that the diversity antenna circuit 3 is in an operating state, so that the antenna body 1, the high-frequency selection circuit 21, and the diversity antenna circuit 3 form a path; therefore, the signals currently received by the antenna body 1 are output to the diversity antenna circuit 3 through the high-frequency selection circuit 21, the signals currently received by the antenna body 1 are prevented from being output to the medium-frequency selection circuit 22 and/or the low-frequency selection circuit 23, signal attenuation is avoided, and the signal strength and the use experience of a user are improved.

Preferably, as shown in fig. 1 and fig. 2, the antenna dividing selection circuit 2 further includes a second gating switch 25, an input end of the intermediate frequency selection circuit 22 is electrically connected to the antenna body 1 through the second gating switch 25, and an output end of the intermediate frequency selection circuit 22 is electrically connected to the digital television circuit 4; the controller 6 is configured to control the second gating switch 25 to be closed when detecting that the digital television circuit 4 is in a working state, so that the antenna body 1, the intermediate frequency selection circuit 22, and the digital television circuit 4 form a path. Therefore, the signal currently received by the antenna body 1 is output to the digital television circuit 4 through the intermediate frequency selection circuit 22, so that the signal attenuation caused by the fact that the signal currently received by the antenna body 1 is output to the high frequency selection circuit 21 and/or the low frequency selection circuit 23 is avoided, and the signal strength and the experience of a user using the DTV function of the mobile terminal are improved; the problems that an external DTV antenna is easy to damage and lose, high in cost, inconvenient to carry, large in occupied space and the like are solved.

Preferably, as shown in fig. 1 and fig. 3, the antenna frequency division selecting circuit 2 further includes a third gating switch 26, an input end of the low frequency selecting circuit 23 is electrically connected to the antenna body 1 through the third gating switch 26, and an output end of the low frequency selecting circuit 23 is electrically connected to the frequency modulation circuit 5; the controller 6 is configured to control the third gating switch 26 to be closed when detecting that the frequency modulation circuit 5 is in an operating state, so that the antenna body 1, the low frequency selection circuit 23, and the frequency modulation circuit 5 form a path. Therefore, the signal currently received by the antenna body 1 is output to the frequency modulation circuit 5 through the low-frequency selection circuit 23, so that the signal attenuation caused by the fact that the signal currently received by the antenna body 1 is output to the high-frequency selection circuit 21 and/or the medium-frequency selection circuit 22 is avoided, and the signal intensity and the experience of a user using the FM function of the mobile terminal are improved; the problems that an external FM antenna is easy to damage and lose, high in cost, inconvenient to carry, large in occupied space and the like are solved.

Here, it should be noted that, in order to further save the space occupied by the built-in antenna system, the functions of the controller 6 may be replaced by a program written in a processor of the mobile terminal; the processor detects whether the DTV function and the FM function of the mobile terminal are in an active state in real time, namely: and whether the antenna body is in a working state or not, and when the antenna body is in the working state, outputting a signal currently received by the antenna body 1 to the DTV or the FM through a corresponding frequency selection circuit.

In the embodiment of the invention, the antenna frequency division selection circuit 2 is arranged between the antenna body 1 and the plurality of circuits in the mobile terminal, so that only one antenna circuit, such as a diversity antenna circuit 3, a digital television circuit 4 or a frequency modulation circuit 5, is communicated with the antenna body 1 at the same time, the coexistence and compatibility of the plurality of antennas can be realized on the basis of ensuring that the signal intensity of each antenna channel is not attenuated, and the space occupied by a built-in antenna system is reduced; the problem of external telescopic antenna fragile, difficult carrying and occupation space are big is solved.

The embodiment of the invention also provides a mobile terminal which comprises the built-in antenna system.

Correspondingly, the built-in antenna system of the embodiment of the invention is applied to the mobile terminal, so the embodiment of the invention also provides the mobile terminal, wherein the implementation embodiments of the built-in antenna system are all applicable to the embodiment of the mobile terminal, and the same technical effect can be achieved.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.