Radio Frequency Passive Resonant Sensing Feature Demodulation Transformation Circuit

A conversion circuit and sensing technology, applied in electrical components, transmission systems, digital transmission systems, etc., can solve the problems of signal transmission loss and noise, poor driving ability, low demodulation bandwidth, etc., to achieve accurate conversion and testing, frequency The effect of high resolution and low phase noise

CN107800443BActive Publication Date: 2020-02-18ZHONGBEI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2020-02-18

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Abstract

The invention discloses a radio frequency passive resonance sensing characteristic demodulation conversion circuit and relates to the technical field of wireless sensor conversion demodulation testing. The conversion circuit comprises an excitation source, a power distributor and an amplitude-phase receiving unit. The excitation source is divided into a plurality of paths through the power distributor and input to corresponding modules in the amplitude-phase receiving unit. The amplitude-phase receiving unit is used for down-converting a measured signal to an intermediate frequency signal, outputting the signal and sending the signal to a signal conditioning and quantization acquisition module at the back end. Then the signal is converted into discrete time-domain signals for processing atthe back end. The conversion circuit has the advantages of wide output frequency range, high frequency hopping speed, low phase noise, high frequency resolution, high frequency sweeping period, shortresponse time, etc.
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Description

technical field

[0001] The invention relates to the technical field of wireless sensor conversion and demodulation testing, in particular to a radio frequency passive resonance sensing feature demodulation conversion circuit. Background technique

[0002] In the process of network analysis and testing, most research and development units use impedance analysis instruments or vector network analysis instruments produced by Agilent, NI and other companies, British WayneKerr Company, and Japanese HIOKI Company.

[0003] AgilentE4991A RF impedance / material analysis provides ultimate impedance measurement performance and powerful built-in analysis functions. It will provide innovative functions for component and circuit designers to measure components within 3GHz to help them in their research and development work. Unlike reflection measurement techniques, the E4991A uses radio frequency current-voltage (RF-IV) technology, which provides more accurate impedance measurements over...

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0014] Many specific details are set forth in the following description to facilitate a full understanding of the present invention, but the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can do so without departing from the connotation of the present invention. Similar promotion, therefore, the present invention is not limited by the specific embodiments disclosed below.

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