Transmitting module of Beidou active antenna

Abstract

The invention is suitable for the technical field of Beidou satellite communication, and provides a transmitting module of a Beidou active antenna, and the transmitting module receives a constant-voltage direct-current electric signal provided by a Beidou satellite communication terminal through a radio frequency coaxial cable. The transmitting module comprises a variable gain amplification unit used for carrying out power amplification processing on a first radio frequency signal after filtering processing based on a first gain; a power amplification unit, used for carrying out power amplification processing on the first radio frequency signal after the power amplification processing is started again; a switch control unit, used for acquiring a first field intensity signal corresponding to the power of the filtered first radio frequency signal and performing switch control on the power amplification unit based on the first field intensity signal; and a gain control unit, used for acquiring a second field intensity signal corresponding to the power of the first radio frequency signal after the power amplification processing is carried out again, and carrying out reverse adjustment on the first gain based on the second field intensity signal, thereby solving the problem that the antenna power amplifier is easy to damage.

Description

technical field [0001] The application belongs to the technical field of Beidou satellite communication, and in particular relates to a transmitting module of Beidou active antenna. Background technique [0002] The Beidou satellite navigation system is a satellite navigation system with independent intellectual property rights in my country. With the rapid development of the Beidou satellite navigation system, various Beidou satellite communication terminals based on the Beidou satellite navigation system have emerged and are widely used in electric power, agriculture, Water conservancy and sea and land transportation and other fields. [0003] The Beidou satellite communication terminal usually communicates with the Beidou satellite through the Beidou antenna, but in some specific application environments, the Beidou antenna cannot be integrated in the Beidou satellite communication terminal, and the antenna needs to be processed. A traditional solution is to use radio freq...

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Problems solved by technology

[0004] In view of this, the embodiment of the present application provides a transmitting module of the Beidou active antenna to solve the problem that the existing Beidou antenna design scheme is likely to cause damage to the antenna power amplifier, reduce the reliability of the Beidou antenna, and shorten the service life of the Beidou antenna. Moreover, the power of the radio frequency signal output by the existing Beidou antenna is unstable, which leads to problems of poor communication quality or high power consumption of the Beidou antenna

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