An ultra-regeneration receiving device
A receiving device and super-regenerative technology, applied in the field of communication, can solve problems such as poor accuracy, low sensitivity, and high cost, and achieve the effects of reduced volume, good stability, and enhanced sensitivity
Inactive Publication Date: 2010-05-26
XINKE INT PRIVATE
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Problems solved by technology
[0003] When the input signal of the traditional super-regenerative receiving device is very small, due to the limitation of the analog signal itself, when the difference between the start-up time of the oscillator and the start-up time of the oscillator when there is no input signal is very small, the analog filter and the comparator behind it will not be able to Its resolution, low sensitivity
Moreover, because the time period of the indeterminate analog signal is very short, the subsequent noise has a great influence on the accuracy of the filter, and the demodulation result has a high error rate and poor accuracy.
[0004] Since the current super-regenerative receiving devices on the market are all modules made of discrete components, the cost is high and the area is large
Inconvenient to use, especially when used in conjunction with other components
Method used
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[0031] The present invention will be further described below in conjunction with the accompanying drawings and preferred embodiments.
[0032] Such as figure 2 As shown, the super-regenerative receiving device of the present invention includes: an antenna, an isolation amplifier, an oscillator, an envelope detection module, a current control module and a digital demodulation module; after the antenna receives electromagnetic waves, when there is an When the radio frequency signal (this design uses a 315M oscillator), the isolation amplifier will resonate and amplify it. After performing envelope detection on the amplified signal, by detecting the oscillation frequency, the digital demodulation module receives the oscillation signal generated by the detection oscillator and counts the signal, converts the RF analog signal into a digital signal, and demodulates the digital signal output.
[0033] The typical data rate of the super-regenerative receiving device is 1K-50Kbits / s...
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The invention discloses a superregeneration reception device, which comprises the following parts: a buffer and amplify module for buffering and amplifying the received radio frequency analog signal,an oscillator connected with the buffer and amplify module, a digital demodulation module connected with the oscillator, wherein the digital demodulation module converts the radio frequency analog signal to the digital signal and demodulates and outputs the digital signal. The invention digitalizes the oscillation time of the oscillator, then demodulates the received OOK signal by calculating theoscillation cycle number of the interval opening the oscillator and closing the oscillator and by comparing the oscillation cycle times of the interval opening the oscillator and closing the oscillator. The invention improves the sensibility of the receiver.
Description
technical field [0001] The present invention relates to the technical field of communication, and more specifically, relates to a super-regenerative receiving device. Background technique [0002] The super regenerative receiving device is mainly used in wireless data transmission with low power consumption, short distance and low speed. Usually the signal it receives is a 100% amplitude modulation signal, also called OOK modulation (of course, other amplitude modulations can also be applied, but the effect of on-off keying modulation is the best). Such as figure 1 As shown, its traditional working principle is: the OOK signal received through the antenna is isolated and amplified to affect the start-up time of the oscillator. When the antenna receives the same signal as the oscillation frequency of the oscillator (315M here), the oscillator will start to oscillate relatively quickly, otherwise the antenna will start to oscillate slowly if it does not receive the correspon...
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IPC IPC(8): H04B1/16H04B7/00
Inventor 邓建元
Owner XINKE INT PRIVATE