Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1989-04-14
1991-02-26
Groody, James J.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
455195, 455197, H04N 550, H04B 126, H03J 110
Patent
active
049965999
ABSTRACT:
The present invention concerns apparatus for changing the effective tuning inductance with a change of frequency of a multi-band oscillator, said frequency being controlled in response to the magnitude of a tuning voltage for tuned signal amplifiers so that three point tuning can be achieved in the lowest frequency band between the signal amplifiers and the oscillator. In accord with the present invention, a reactance network is connected in series with the tuning inductor of the lowest band for tailoring the tracking of the oscillator frequency with change of tuning voltage.
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Electronic Designers' Handbook by Landee, Davis and Albrecht, 1957, McGraw-Hill Book Company, pp. 7-84, and 7-85.
Radiotron Designer's Handbook by Smith, 1965, Radio Corporation of America, pp. 1002 and 1003.
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Emanuel Peter M.
Groody James J.
Powell Mark R.
RCA Licensing Corporation
Tripoli Joseph S.
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