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A satellite communication terminal antenna impedance matching method and device

A terminal antenna, impedance matching technology, applied in transmission systems, electrical components, etc., can solve problems such as inability to guarantee, and achieve the effect of maximizing, reducing power consumption, and achieving antenna efficiency

Active Publication Date: 2022-04-29
北京中科晶上科技股份有限公司
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Problems solved by technology

Satellite communication terminal antennas work in different frequency bands, and its working mode is time division duplex TDD. The antennas are multiplexed for transmission and reception, and the same set of antenna matching values ​​is used. There is no guarantee that the efficiency of the antennas can be maximized at the same time in the transmission and reception frequency bands.

Method used

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  • A satellite communication terminal antenna impedance matching method and device
  • A satellite communication terminal antenna impedance matching method and device
  • A satellite communication terminal antenna impedance matching method and device

Examples

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Embodiment

[0052] Description of relevant parameters in the embodiment:

[0053] Z i =(C i , L i )(i=1, 2, ..., M): the capacitive-inductive combination obtained by traversing the impedance tuner 102;

[0054] S r : The total isotropic sensitivity TIS expected value S of the antenna in the receiving frequency band r ;

[0055] S o : Total transmit power TRP expected value S of the antenna in the transmit band o ;

[0056] Z n =(C n , L n )(n=1, 2, ..., N): in Z i =(C i , L i )(i=1, 2, ..., M) and S r or S o N capacitive and inductive combinations with the closest standing wave ratio, where N<M;

[0057] S 1 , S 2 ,...,S n (n=1, 2, ..., N): tune the impedance of the impedance tuner 102 to Z1 ,Z 2 ,…,Z n , corresponding to the total isotropic sensitivity TIS value of the receiving antenna;

[0058] S min =min{S 1 , S 2 ,...,S n}: the minimum value of the TIS value of the total omnidirectional sensitivity of the above-mentioned receiving antenna;

[0059] Addr s-...

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Abstract

The invention discloses a satellite communication terminal antenna impedance matching method and device, wherein the method includes the following steps: tuning the receiving matching impedance of the antenna to obtain the optimal value of the receiving matching impedance; tuning the antenna transmitting matching impedance to obtain the optimal value of the transmitting matching impedance Excellent value; write the optimal value of the antenna receiving and transmitting matching impedance into the antenna parameters respectively; in the time division duplex TDD working mode, when in the receiving time slot, call the optimal value of receiving matching impedance; when in the receiving time slot, call the transmitting Optimal value of matching impedance. Through the independent optimization of the receiving efficiency and transmitting efficiency of the satellite communication terminal antenna, the optimal matching values ​​of receiving and transmitting impedance are set respectively, and the transmitting power of the antenna transmitter of the satellite communication terminal and the omnidirectional sensitivity of the receiver are significantly improved.

Description

technical field [0001] The invention belongs to the field of wireless communication networks, and in particular relates to a satellite communication terminal antenna impedance matching method and device. Background technique [0002] With the vigorous development of satellite communication technology, satellite communication functions such as satellite phone and satellite data transmission are constantly moving from military to civilian. Satellite communication terminals have become a new type of communication technology other than cellular communication. They play a unique role in the blind areas of cellular communication, such as mountainous areas and seas, and have great practicability. Satellite communication terminals, especially handheld terminals, have strict requirements on battery capacity and power efficiency. Satellite communication terminal antennas work in different frequency bands, and its working mode is time division duplex TDD. The antennas are multiplexed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/04H04B1/18
CPCH04B1/0458H04B1/18
Inventor 朱德才马英矫张景辉李倩周运范刘鸿飞胡金龙石晶林
Owner 北京中科晶上科技股份有限公司
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