Title :
Gyrator frequency modulator
Author :
Atiya, F.S. ; Keriakos, M.H.
Author_Institution :
Cairo University, Faculty of Engineering, Giza, Egypt
Abstract :
A frequency modulator is realised using a gyrator one of whose gyration conductà nces is varied with the audio signal. The gyrator, together with two capacitors, forms the tank circuit of a negative impedance convertor oscillator. A linear peak frequency deviation exceeding ±2.5% was obtained, the s.n.r. being 64 dB.
Keywords :
frequency modulation; gyrators; modulators; negative impedance convertors; oscillators; SNR; audio signal; gyrator frequency modulator; linear peak frequency deviation; negative impedance convertor oscillator; tank circuit;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19750172
