GNSS (Global Navigation Satellite System) multi-mode multiplexer module and multi-mode radio frequency receiving and transmitting system

Abstract

The invention discloses a GNSS (Global Navigation Satellite System) multi-mode multiplexer module. The GNSS multi-mode multiplexer module comprises an antenna multiplexer and a channel multiplexer, wherein the antenna multiplexer is used for receiving a downlink channel satellite signal and transmitting the downlink channel satellite signal into a four-in-one low-noise filtering combination amplifier for combination; the combined signal further comprises a Beidou first-generation uplink channel signal transmitted through a Beidou first-generation power amplifier; the combined downlink channel signal and an uplink channel transmitted signal are subjected to bidirectional equivalent shunting through a signal transmitting and receiving hybrid circuit I; and the channel multiplexer is used for performing bidirectional equivalent combination on the downlink channel signal and the uplink channel signal through the a signal transmitting and receiving hybrid circuit II, and shunting a four-path downlink channel satellite signal in a four-in-one signal power divider. A plurality of signals are shunted through a multi-mode power divider; the isolation degree between a transmitted signal and a received signal is increased through adoption of a transmitting and receiving hybrid filtering circuit pair; interference among signals is eliminated; and low-power-consumption running of a whole system is ensured through adoption of a controllable power amplifier.

Description

technical field [0001] The invention relates to a Beidou first generation / Beidou second generation / GPS / GLONASS multi-mode multi-function device module, and a multi-mode radio frequency transceiver system designed by using the multi-function device module, which realizes Beidou first-generation / Beidou through a feeder line The down-conversion multi-mode carrier conversion of the second generation / GPS / GLONASS and the modulation and up-conversion carrier conversion of the Beidou first generation. Background technique [0002] Beidou satellite navigation system is a global satellite navigation system independently developed by my country. It is divided into Beidou first-generation satellite navigation system and Beidou second-generation satellite navigation system. GPS and GLONASS are global satellite navigation systems developed by the United States and Russia respectively. At the same time, Beidou first-generation satellite navigation system Provide the short message communicat...

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Problems solved by technology

[0003] Beidou 1st generation, GPS, GLONASS satellite application technology is quite mature, Beidou 2nd generation satellite application technology is also developing vigorously, but there is no RF module compatible with all RF channels of Beidou 1st generation / Beidou 2nd generation / GPS / GLONASS satellite navigation system. A radio frequency transceiver system that realizes the multi-mode carrier conversion of the downlink satellite signals of the Beidou first-generation / Beidou second-generation / GPS / GLONASS four satellite navigation systems and the first-generation Beidou uplink satellite signals

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