Design and Implementation of Narrow- Band High Frequency Resonantor

DOI

10.2991/cisia-15.2015.65How to use a DOI?

Keywords

resonant; LC parallel resonance; frequency selective network; integrated operational amplifier; impedance matching

Abstract

LC parallel resonance circuit, the equivalent impedance is purely resistive and the value of the maximum, by using this feature, the resonant circuit in the integrated operational amplifier feedback resistor position, can be at the resonant frequency to achieve specific signal of a frequency selection amplifying. This design is mainly by the attenuation frequency selection network, a frequency selection amplifying module and automatic gain control module, the two integrated operational amplifier and frequency selection network combination, to achieve stable resonant amplification, amplification of up to 81dB, resonant frequency of 15MHz; by using 3.6V single power supply, the power consumption is only 320mW, observed in the spectrum analyzer waveform of high Q value, the smaller rectangle coefficient, frequency offset in 100KHz, 3dB bandwidth in the 300KHz, the whole system has stable output, no excitation signal output.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - C.H Li
AU  - X.H Gao
PY  - 2015/06
DA  - 2015/06
TI  - Design and Implementation of Narrow- Band High Frequency Resonantor
BT  - Proceedings of the International Conference on Computer Information Systems and Industrial Applications
PB  - Atlantis Press
SP  - 244
EP  - 246
SN  - 2352-538X
UR  - https://doi.org/10.2991/cisia-15.2015.65
DO  - 10.2991/cisia-15.2015.65
ID  - Li2015/06
ER  -