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Band pass sampling receiver and its sampling method

A band-pass sampling and receiver technology, applied to electrical components, transmission systems, incremental modulation, etc., can solve the problems of high cost and power consumption

Inactive Publication Date: 2005-06-08
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] To sum up, it is necessary to use an analog-to-digital conversion unit with a relatively high sampling frequency and resolution to achieve conventional band-pass sampling, but usually the cost and power consumption of such an analog-to-digital conversion unit are very high

Method used

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  • Band pass sampling receiver and its sampling method
  • Band pass sampling receiver and its sampling method
  • Band pass sampling receiver and its sampling method

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Embodiment Construction

[0017] figure 2 It is a band-pass sampling receiver for a wireless communication system according to an embodiment of the present invention. Combine below figure 2 The bandpass sampling receiver is described in detail.

[0018] Such as figure 2 As shown, the antenna unit 300 receives an analog radio frequency signal including a user signal from a wireless medium, and sends the received analog radio frequency signal to the radio frequency filtering and amplifying unit 310 .

[0019] After receiving the analog radio frequency signal from the antenna unit 300, the radio frequency filtering and amplifying unit 310 first uses the radio frequency filter 3101 to bandpass filter the received analog radio frequency signal to attenuate the out-of-band interference outside the frequency band where the user signal is located, and then uses A low noise amplifier (LNA) 3102 amplifies and outputs the analog radio frequency signal filtered by the radio frequency filter 3101 with low noi...

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Abstract

A band-pass sampling receiver, including: the first Sigma-delta A / D conversion unit, which is used under the control of the first sampling signal to converse the received radio-frequency signal to the first circuit digital information; the second Sigma-delta A / D conversion unit, which is used under the control of the second sampling signal to converse the received radio-frequency signal to the second circuit digital information; a signal-separating unit, which separates the cophase and the orthogonal information in the first and the second circuits digital signals; because adopt the Sigma-delta A / D conversion unit to sample and quantize the simulate radio-frequency signal, so the band-pass sampling receiver can reduce the cost of the modulo conversion unit.

Description

technical field [0001] The present invention relates to a wireless signal receiver used in a wireless communication system, in particular to a wireless signal receiver using band-pass sampling technology. technical background [0002] In the field of wireless communication, the receiver plays a very important role, because it receives the radio frequency signal from the wireless space through the antenna, and converts it into a baseband digital signal with a center frequency at zero frequency, so that it can be further processed by the baseband part. A desired user signal with a required bit error rate is recovered. [0003] figure 1 A conventional widely used superheterodyne receiver is shown. Such as figure 1 As shown, the analog radio frequency signal received by the antenna unit 10 is sent to the radio frequency filter 20 . After the radio frequency filter 20 receives the analog radio frequency signal from the antenna unit 10, it performs bandpass filtering on the an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M3/02H04B1/24
CPCH04B1/24H04B1/16
Inventor 钱学诚
Owner KONINK PHILIPS ELECTRONICS NV
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