Integrated frequency-selective amplifiers for radio frequencies

The design approach for integrated selective amplifiers described here is based on a feedback configuration with a positive real zero in the loop transmission function. The basic circuit consists of two unity gain amplifiers and a transconductance block with RC imbedding. Temperature- insensitive pe...

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Published in:IEEE journal of solid-state circuits 1968-12, Vol.3 (4), p.417-422
Main Authors: Rigby, G.A., Lampard, D.G.
Format: Article
Language:English
Subjects:
Bandwidth
Circuits
Equations
Feedback loop
Laboratories
Negative feedback
Radio frequency
Radiofrequency amplifiers
Temperature sensors
Transconductance
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description The design approach for integrated selective amplifiers described here is based on a feedback configuration with a positive real zero in the loop transmission function. The basic circuit consists of two unity gain amplifiers and a transconductance block with RC imbedding. Temperature- insensitive performance, with Q values up to at least 150, at center frequencies in the RF range, is obtained for circuits fabricated with conventional diffusion and thin-film deposition techniques. Design equations are given and experimental data are reported for a 650-kHz amplifier with a Q of 50/spl plusmn/5 percent over the temperature range -10 to +110/spl deg/C.
doi_str_mv 10.1109/JSSC.1968.1049933
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source IEEE Electronic Library (IEL) Journals
subjects Bandwidth
Circuits
Equations
Feedback loop
Laboratories
Negative feedback
Radio frequency
Radiofrequency amplifiers
Temperature sensors
Transconductance
title Integrated frequency-selective amplifiers for radio frequencies
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