Frequency stabilized downconverter facilitating output frequency

Details Frequency stabilized downconverter facilitating output frequency Frequency stabilized downconverter facilitating output frequency

1979-09-24

1982-03-16

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455192, 455263, 455190, 331 16, 331 18, 3581911, H04B 116, H04N 544

Patent

active

043205330

ABSTRACT:
A downconverter having a voltage controlled local oscillator supplied with a control DC voltage, obtained from a frequency discriminator and responding to variations of the difference between a reference produced by a stable oscillator and an output signal frequency of the downconverter is employed for facilitating output channel alterations without changing local oscillator stability characteristics. When used as a television channel converter, it changes a channel in the UHF or SHF band to VHF channels.

REFERENCES:
patent: 2562943 (1951-08-01), Pensyl
patent: 2843740 (1958-07-01), Mantz
patent: 3085210 (1963-08-01), Aasen
patent: 3678394 (1972-07-01), Ebisch
patent: 3686574 (1972-08-01), Niman

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