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ZigBee integrated radio frequency receiver chip

A radio frequency receiver and radio frequency chip technology, applied in the field of radio frequency receivers, can solve the problems of long gain adjustment time and complex algorithm, and achieve the effect of reducing the performance of the chip, simplifying the algorithm, and reducing the burden

Inactive Publication Date: 2015-07-01
XIDIAN UNIV
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Problems solved by technology

Therefore, there are disadvantages such as complex algorithm and long gain adjustment time.

Method used

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  • ZigBee integrated radio frequency receiver chip
  • ZigBee integrated radio frequency receiver chip
  • ZigBee integrated radio frequency receiver chip

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Embodiment Construction

[0016] In order to make the objects and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with examples. It should be understood that the following words are only used to describe one or several specific implementation modes of the present invention, and do not strictly limit the protection scope of the specific claims of the present invention.

[0017] The technical scheme that the present invention takes is as figure 1 As shown, a ZigBee integrated radio frequency receiver chip is integrated with a low noise amplifier 11, a quadrature mixer 12, a complex bandpass filter 13, an automatic Gain controller 14 and analog-to-digital converter 15, quadrature mixer 12 are connected with phase-locked loop frequency synthesizer 16, automatic gain controller 14 is connected with gain control signal generator 17, are also integrated with on the radio frequency chip The voltage shaper 18 connected to the power supply, ...

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Abstract

The invention relates to a ZigBee integrated radio frequency receiver chip provided with a low noise amplifier, a quadrature frequency mixer, multiple bandpass filters, an automatic gain controller, an analog-to-digital converter, a phase-locked loop frequency synthesizer, a gain control signal generator and a voltage regulator. According to the technical scheme, the voltage regulator is integrated with a chip body, the operation stability of circuit modules of the chip body is improved, and the chip performance impairment caused by power supply voltage fluctuation is reduced; meanwhile, the link signal energy detection is implemented through a simulation circuit, the whole signal production control module is integrated with the chip body, the link gain can be regulated through a receiving link and a digital baseband without feedback loop establishment, the gain control algorithm is simplified, the load of the baseband is reduced, and the baseband processing speed is increased.

Description

technical field [0001] The invention relates to the field of radio frequency receivers, in particular to a ZigBee integrated radio frequency receiver chip. Background technique [0002] Traditional ZigBee (Internet of Things terminal) RF receivers are all built with discrete devices, which are bulky, poorly functional, and inconvenient to use. Moreover, the chip voltage is directly supplied by an off-chip power supply. Because the off-chip power supply is unstable and noisy The shortcomings seriously affect the normal operation of each circuit module of the receiver. On the other hand, the automatic gain module provides a large dynamic gain for the receiver link, and the gain value is set by detecting the output signal energy value of the last-stage analog-to-digital converter of the radio frequency chip, and then performing a large number of complex calculations. Finally, it is realized by the digital processing baseband feedback to the analog link. Therefore, there are d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/16
Inventor 李迪杨银堂朱樟明李跃进
Owner XIDIAN UNIV
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