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Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module

A GPS signal, radio frequency receiving technology, applied in the beacon system, transmission system, radio wave measurement system using radio waves, etc., can solve the problem of the radio frequency receiving module that has not yet appeared, improve the receiving sensitivity and reliability, reduce mutual Interfering, easy-to-use effects

Active Publication Date: 2012-05-23
郑州威科姆科技股份有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The Beidou first-generation satellite application technology is quite mature, and GPS satellite technology is widely used, but there is no radio frequency receiving module compatible with the Beidou first-generation and GPS dual-system carrier conversion, which can simultaneously realize the satellite signal carrier conversion of the GPS band and the Beidou first-generation band to the appropriate IF

Method used

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  • Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module
  • Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module
  • Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module

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Embodiment 1

[0031] Such as figure 1 As shown, the Beidou / GPS signal power divider in the present invention adopts the power division structure of the signal orthogonal output, and its input terminal SUM PORT receives the signal from the Beidou / GPS dual-mode antenna, and the signal is directly output through the PORT1 port all the way. The other way is output from the PORT2 port through the coupling circuit. A high-pass filter circuit L2 is provided at the PORT1 port for direct output, and a low-pass filter circuit L1 is provided at the PORT2 port for coupled output. The above-mentioned high-pass filter circuit L2 and low-pass filter circuit L1 can separate Beidou and GPS satellite signals.

[0032] In this embodiment, the method for manufacturing the above-mentioned power divider is: figure 1 The schematic diagram of the circuit is simulated by ADS, and the single-chip power divider is made by CMOS technology. The above-mentioned ADS technology and CMOS technology are well known to thos...

Embodiment 2

[0051] The difference between this embodiment and Embodiment 1 is that in this embodiment, the Beidou radio frequency receiving unit adopts a secondary down-conversion structure, that is, the Beidou mixing circuit is a Beidou secondary down-conversion circuit, such as figure 2 , image 3 shown. The Beidou radio frequency signal is first amplified by a low noise amplifier to ensure extremely low noise. After the signal is amplified, it enters the Beidou secondary down-conversion circuit. The Beidou secondary down-conversion circuit uses the synthesized local oscillator signal to down-convert the radio frequency signal to reduce the signal to the intermediate frequency range. The obtained intermediate frequency signal passes through the Beidou intermediate frequency filter, and the Beidou intermediate frequency The amplifier enters the Beidou automatic gain control amplifier for amplification, and its gain coefficient is determined by the strength of the satellite signal. The...

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Abstract

The invention discloses a Big Dipper / GPS signal power divider adopting a power dividing structure for orthogonally outputting a signal. The input end of the power dividing structure receives a signal from a Big Dipper / GPS dual-mode antenna. The signal is directly output in one channel and is output through a coupling circuit in the other channel; the output end of the power dividing structure is respectively provided with a high-pass filter circuit and a low-pass filter circuit which separate a Big Dipper satellite signal and a GPS satellite signal. The invention also discloses a manufacture method of the Big Dipper / GPS signal power divider and a dual-system radio frequency receiving module for manufacturing the power divider by adopting the method, and thus, the single-chip power dividercan be integrated into one PCB (Polychlorinated Biphenyl) board when being applied to the Big Dipper / GPS radio frequency receiving module, and therefore, the volume is small, and the receiving sensitivity and reliability of the radio frequency receiving module are also improved; simultaneously, the Big Dipper generation band and GPS band carrier-converting Big Dipper generation / GPS dual-system radio frequency receiving module appears.

Description

technical field [0001] The present invention relates to a radio frequency receiving module, in particular to a Beidou / signal power splitter manufactured by a new manufacturing process, capable of simultaneously receiving Beidou and GPS satellite signals, and performing carrier conversion on the two satellite signals The dual system RF receiving module. Background technique [0002] The Beidou navigation system is a satellite navigation system independently established by my country. Its successful development marks that my country has broken the monopoly position of the United States and Russia in this field. The Beidou navigation system mainly has three functions: timing, communication, and timing. [0003] Beidou first-generation satellite application technology is quite mature, and GPS satellite technology is widely used, but there is no radio frequency receiving module compatible with Beidou first-generation and GPS dual-system carrier conversion, which can simultaneousl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S5/02G01S1/02H03D7/00H03F1/26H04B1/16
Inventor 贾小波吴淑琴徐银召王文瑜
Owner 郑州威科姆科技股份有限公司
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