Television receiver tuning circuit tunable over a wide frequency

Details Television receiver tuning circuit tunable over a wide frequency Television receiver tuning circuit tunable over a wide frequency

1982-05-14

1984-04-10

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455179, 455197, 334 15, 330305, H04B 116, H03F 3191

Patent

active

044425481

ABSTRACT:
A radio frequency (RF) amplifier including a resonant circuit having a peaked response is tunable in response to a tuning voltage to select RF carriers over a wide range of frequencies and includes an additional resonant circuit for improving its response at the low frequency end of that range. The additional resonant circuit has a peaked response tunable in response to the tuning voltage in tracking relationship to that of the first resonant circuit. The tracking relationship is desirably selected so that the additional resonant circuit does not become tuned to a frequency which is an integral sub-multiple of the frequency of a selected RF carrier.

REFERENCES:
patent: 3555431 (1971-01-01), Wilcox
patent: 3593154 (1971-07-01), Blass
patent: 3611154 (1971-10-01), Kupfer
patent: 3622891 (1971-11-01), Leland
patent: 3696302 (1972-10-01), Gossard
patent: 4023106 (1977-05-01), Utsunomiya
patent: 4048598 (1977-09-01), Knight
patent: 4214217 (1980-07-01), Saito et al.
patent: 4215372 (1980-07-01), Suzuki
patent: 4291290 (1981-09-01), Ijichi et al.
patent: 4361909 (1982-11-01), Theriault
patent: 4368541 (1983-01-01), Evans
RCA Television Service Data Supplement, Chassis CTC 110 Series, File 1981-C-1-S5, pp. 1, 5-7.
RCA Television Product Technical Manual, May 1981, pp. 25-27.

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