Construction of tuning circuit in tuner

Details Construction of tuning circuit in tuner Construction of tuning circuit in tuner

1980-12-02

1982-11-16

Gensler, Paul L.

Tuners

Tuner unit directly responsive to voltage and/or current...

Reactance tuning

333235, 334 45, 361417, H03J 320

Patent

active

043597017

ABSTRACT:
A printed circuit board lamination consisting of upper and lower printed circuit boards is provided with an area consisting of the sole lower printed circuit board, and a varactor diode and a resonance rod portion parallel to the lamination are arranged in this area. Thus, the length of lead of the varactor diode is reduced in effect, and also the effects of variation of the dielectric constant of the printed circuit board due to changes of the temperature thereof and relative humidity are reduced.

REFERENCES:
patent: 3512105 (1970-05-01), Lance, Jr. et al.
patent: 3651409 (1972-03-01), George et al.

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