Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1989-08-01
1991-10-01
Kuntz, Curtis
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455191, 455285, 455302, H04B 110
Patent
active
050541170
ABSTRACT:
A tunable/switchable notch filter adapted for use in the front end of a television receiver removes an image frequency on the low side of the UHF passband without degrading desired frequencies. The tunable/switchable notch filter can be switched out when in a VHF mode so as not to degrade VHF performance and switched in for UHF operation for filtering out a difference image frequency which varies with and is a predetermined frequency less than the desired UHF signal.
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Cruz Michael S.
Vaughter Harmon P.
Kuntz Curtis
Urban Edward
Zenith Electronics Corporation
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