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GPS receiving machine integrated radio frequency chip

A GPS receiver, radio frequency chip technology, applied in satellite radio beacon positioning systems, measuring devices, instruments, etc., can solve problems such as complex algorithms, and achieve the effects of simplifying algorithms, speeding up, and reducing burdens

Inactive Publication Date: 2010-10-06
XIAN HUAXUN MICROELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the gain adjustment of the signal is to be adjusted by the two parts of the radio frequency and the baseband through its interface, so the algorithm is more complicated

Method used

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  • GPS receiving machine integrated radio frequency chip
  • GPS receiving machine integrated radio frequency chip
  • GPS receiving machine integrated radio frequency chip

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Experimental program
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Embodiment Construction

[0017] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0018] refer to figure 1 As shown, low noise amplifier 2, mixer 3, intermediate frequency filter 6, frequency synthesizer 4, analog-to-digital converter 8, automatic gain controller 7, analog-to-digital converter 8, I / Q separator 9, data Compressors 10, 11, serial-to-parallel converters 12, 13, and parallel-to-serial converters 14, 15 integrate an integral radio frequency signal receiver chip, the input radio frequency signal 1 enters the low noise amplifier 2, and the output of the low noise amplifier 2 The signal enters the mixer 3, the output signal of the mixer 3 enters the intermediate frequency filter 6, the output signal of the intermediate frequency filter 6 enters the automatic gain controller 7, and the output signal of the automatic gain controller 7 enters the analog-to-digital converter 8, and the analog Digital converter 8 output ...

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Abstract

The invention relates to an integrated RF chip of GPS receiver, which is characterized in that a monolithic low noise amplifier, a mixer and a frequency synthesizer, a medium frequency filter, an A / D converter, an automatic gain controller, an I / O isolator, a data compressor, a serial / parallel converter and a parallel / serial converter are all integrated in a monolithic RF chip, particularly a module for controling the gain variation is integrated on the RF chip, thus simplifying the algorithm, automatically achieving signal gain feedback adjustment of automatic gain pulsewidth modulation signals between RF and base band without the need of interface, alleviating the burden for signal processing of the base band and improving the processing speed. The inventive integrated RF chip of GPS receiver is produced by adopting 0.35 mum silicon germanium process and has good social and economic benefits.

Description

technical field [0001] The invention relates to a radio frequency signal receiver chip, in particular to a monolithic integrated radio frequency chip used in a global satellite positioning system (GPS) receiver. Background technique [0002] In the previous GPS radio frequency receiver, after the signal passes through the last-stage analog-to-digital converter of the radio frequency chip, the sign (sign bit) and MAG (amplitude bit) bits generated enter the baseband part, but the gain adjustment of the MAG bit is through It is realized by feeding back a feedback signal named AGC_DATA from the baseband to the automatic gain control module in the radio frequency chip. That is to say, the gain adjustment of the signal needs to be adjusted by the feedback of the two parts of the radio frequency and the baseband through its interface, so the algorithm is more complicated. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S1/04G01S5/02G01S19/36
Inventor 李迪周文益
Owner XIAN HUAXUN MICROELECTRONICS