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Wireless receiving device and frequency-reducing method thereof

A wireless receiving device and frequency reduction technology, applied in the field of wireless communication, can solve the problems of poor anti-interference performance, high relative cost, large size of wireless receiving device, etc., and achieve the effect of excellent anti-interference performance and simplified complexity

Inactive Publication Date: 2008-12-24
SYNTRONIX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The wireless receiving device and its frequency reduction method in the present invention are mainly to solve the problems that the existing wireless receiving device has too large volume, relatively high cost and poor anti-interference performance.

Method used

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  • Wireless receiving device and frequency-reducing method thereof
  • Wireless receiving device and frequency-reducing method thereof
  • Wireless receiving device and frequency-reducing method thereof

Examples

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Embodiment Construction

[0030] The wireless receiving device in the present invention utilizes a frequency down converter (Frequency DownConverter) to respectively down-frequency different receiving frequencies, and cooperates with the effect of a low pass filter (Low PassFilter, LPF), so that the receiving device can perform multiple channel or single channel reception. The technical content of the wireless receiving device in the present invention will be described below through multi-channel reception.

[0031] As shown in Figure 2, the multi-channel wireless receiving device 30 in the present invention can receive radio frequency (RF) signals of different receiving frequencies at the same time. Other signals such as intermediate frequency signals after frequency reduction. When the wireless receiving device 30 receives a radio frequency signal, it first utilizes a pre-selector (Pre-selector) 32 to select a radio frequency signal within a frequency band, and transmits the radio frequency signal p...

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PUM

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Abstract

First, using a preselector, the wireless receiver selects signals within frequency band. Next, based on different channel code, the frequency corresponding to local oscillation is selected. Referencing the frequency of local oscillation, treatments of lowering frequency and filtering are carried out by using a down converter so as to obtain a low frequency signal. Low frequency filtering by a low pass filter, gain amplification through an amplitude limiter and demodulation by the descriminator obtains the signal in basic frequency. The invention simplifies complexity of entire equipment, can switch channel rapidly in order to reach the purpose of receiving multiple channels and single channel. The invention possesses splendid interference free performance.

Description

technical field [0001] The present invention relates to a wireless communication technology, more specifically, to a wireless receiving device capable of receiving multi-channel (multi-channel) or single-channel (single channel) signals and its use in wireless products. frequency method. Background technique [0002] With the development of semiconductors, the popularity of the Internet, the rise of information appliances, and the application of wireless communications, digital broadcasting and broadband networks, etc., it is fully proved that the "information age" is coming, that is to say, the transmission of information will be faster, It will also be more diverse. In order to meet people's increasing demand for information, wireless communication technology has been paid more and more attention, and the demand for wireless products has also increased. [0003] For wireless communication products, its main components usually include two parts: a receiver (Receiver) and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/06
Inventor 黄振升翁咏禄
Owner SYNTRONIX CORP
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