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A transceiver circuit system for receiving Beidou first-generation signals and Beidou second-generation signals and its working method

A technology of receiving and sending circuits and sending circuits, which is applied in the field of satellite navigation and communication, can solve the problems of not being able to make better use of the unique advantages of the Beidou navigation satellite system and consume circuit design resources, achieve good positioning effects, save chip area, overcome The effect of inaccurate positioning

Active Publication Date: 2016-08-24
SHANDONG TIANYUAN INFORMATION TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the Beidou navigation receivers are independent Beidou first-generation or second-generation navigation systems, or there are two sets of receiving circuits working independently in one receiving end, which consumes circuit design resources and does not make better use of them. Unique advantages of the Beidou navigation satellite system

Method used

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  • A transceiver circuit system for receiving Beidou first-generation signals and Beidou second-generation signals and its working method
  • A transceiver circuit system for receiving Beidou first-generation signals and Beidou second-generation signals and its working method

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Effect test

Embodiment 1

[0037] A transceiver circuit system for receiving Beidou first-generation signals and Beidou second-generation signals, including a receiving circuit, a data processing and system control circuit, and a sending circuit, the receiving circuit is connected to the sending circuit through the data processing and system control circuit, so The receiving circuit includes a low-noise amplification filter circuit, a mixer one, an intermediate frequency amplification filter circuit, an automatic gain controller, and an A / D analog-to-digital conversion circuit connected in sequence; the sending circuit includes a D / A digital-to-analog conversion circuit connected in sequence Module, filtering circuit, mixer two, gain control and power amplifier, the transceiver circuit system also includes a fractional frequency synthesis PLL that provides local oscillation frequency for the mixer one and the mixer two, the fractional frequency synthesis PLL The frequency synthesis PLL includes a phase d...

Embodiment 2

[0043] According to the working method of the transceiver circuit system described in Embodiment 1, the specific steps include:

[0044] A. The receiving circuit receives Beidou first-generation signals and Beidou second-generation signals. The specific steps include:

[0045] (1) The antenna receives the first-generation Beidou signal and the second-generation Beidou signal, and the first-generation Beidou signal and the second-generation Beidou signal are respectively amplified and filtered by the low-noise amplification filter circuit;

[0046] (2) When the local oscillator frequency of the fractional frequency synthesis PLL is adjusted at f by default 0 When, that is, the receiving end intercommunication mode, the received amplified and filtered Beidou first-generation signal enters step (3), after completing step (3), the decimal frequency synthesis PLL adjusts the local oscillation frequency to f 1 , the received amplified and filtered Beidou second-generation signal en...

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Abstract

The invention relates to a transmitting-receiving circuit system for receiving Beidou first-generation signals and Beidou second-generation signals. The transmitting-receiving circuit system comprises a receiving circuit, a data processing and system control circuit and a transmitting circuit and further comprises a fractional-N frequency synthesizer PLL, wherein the small-step frequency synthesizer PLL comprises a phase discriminator (PFD), a charge pump (CHP), a band-pass filter (BPF), a voltage-controlled oscillator (VCO) and a frequency divider which are annularly connected end to end, and further comprises a capacitor bank (Cap-Bank) and a Sigma-Delta modulator. The transmitting-receiving circuit system only adopts one fractional-N frequency synthesizer PLL, saves the area of an integrated circuit chip and reduces power consumption. The transmitting-receiving circuit system receives the Beidou first-generation signals and the Beidou second-generation signals through one receiving circuit, has the advantages of saving cost and being low in power consumption and high in using efficiency, integrates Beidou first-generation short message transmitting and receiving and Beidou second-generation high-accuracy positioning and facilitates market promotion.

Description

technical field [0001] The invention relates to a transceiver circuit system and a working method for receiving Beidou first-generation signals and Beidou second-generation signals, which belong to the field of communication or satellite navigation. Background technique [0002] Beidou Satellite Navigation System﹝BeiDou (COMPASS) Navigation Satellite System﹞is a self-developed and independently operated global satellite navigation system being implemented in China. The purpose is to build an independent, open and compatible, technologically advanced, stable and reliable Beidou satellite navigation system covering the whole world, promote the formation of the satellite navigation industry chain, form a complete national satellite navigation application industry support, promotion and guarantee system, and promote satellite navigation in the national It is widely used in various industries of economy and society. At present, Beidou has developed and built two generations of n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/40
Inventor 王永倪暹王祖强张航毛刚杨楠
Owner SHANDONG TIANYUAN INFORMATION TECHNOLOGY CO LTD
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