Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1992-09-28
1995-06-27
Urban, Edward F.
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
4551932, 4551933, 455340, H04B 116
Patent
active
054288290
ABSTRACT:
A method for tuning and aligning an electronically tuned FM broadcast receiver is described. The system described compensates for the mismatch of component values between the antenna and RF amplifier tuned circuits, and the IF offset between the local oscillator frequency and the center frequencies of the antenna and RF resonant circuits by developing independent tuning signals for the circuits. The system also provides temperature compensation, and can be aligned without mechanically adjusting inductors and/or capacitors in the tuned circuits.
REFERENCES:
patent: 4402089 (1983-08-01), Knight et al.
patent: 4736456 (1988-04-01), Maier
patent: 5201063 (1993-04-01), Tam et al.
Easterwood Michael J.
Inman Stephen L.
Kennedy Richard A.
Osburn David W.
Pacourek John R.
Delco Electronics Corporation
Funke Jimmy L.
Pham Chi H.
Simon Anthony Luke
Urban Edward F.
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