Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Patent
1983-02-18
1985-09-10
Bookbinder, Marc E.
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
455253, 455319, 455333, H04B 126
Patent
active
045411220
ABSTRACT:
A receiver including an FET frequency mixer is disclosed. A local oscillator generates a local oscillator signal which is applied to a first amplifier whose gain is varied as a function of a control signal applied thereto. The output of the first amplifier is applied to a first gate electrode of the FET frequency mixer. A high-frequency signal received by the receiver is applied to a second amplifier whose gain is also controlled by the control signal. The output of the second amplifier is applied to a second gate electrode of the FET frequency mixer. The control signal is generated as a function of the output of the FET mixer.
REFERENCES:
patent: 1905946 (1933-04-01), Mathieu et al.
patent: 2144935 (1939-01-01), Roberts
patent: 4270222 (1981-05-01), Menant
Build a Superhet Short Wave Receiver-I. Pogson, Electronics-Australia, Nov. 1980, vol. 42, No. 8, pp. 44-53.
Bookbinder Marc E.
Nippon Electric Company Ltd.
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