gnss multi-mode multiplexer module and multi-mode radio frequency transceiver system

Abstract

A GNSS multimode multiplexer module, which includes an antenna multiplexer and a channel multiplexer; the antenna multiplexer receives a downlink channel satellite signal and sends the downlink channel satellite signal into a four-in-one low-noise filter combination The combined signal also includes the Beidou first-generation uplink channel signal transmitted through the Beidou first-generation power amplifier; the combined downlink channel signal and uplink channel transmission signal are bidirectionally equivalently split through the transmitting and receiving signal mixing circuit Ⅰ The channel multiplexer performs two-way equivalent combination of the downlink channel signal and the uplink channel signal through the transmitting and receiving signal mixing circuit II, and then splits the four downlink channel satellite signals in the four-in-one signal power divider. The present invention uses a multi-mode power divider to divide multiple signals, uses a transmitting and receiving hybrid filter circuit to increase the isolation between transmitting signals and receiving signals, eliminates interference between signals, and uses a controllable power amplifier to ensure the integrity of the entire system Low power operation.

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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