Compact electronic tuning device

Details Compact electronic tuning device Compact electronic tuning device

1979-02-27

1981-03-03

Smith, Alfred E.

Tuners

With shielding or housing means

334 45, 333 12, 333222, H03T 300, H03T 100, H03T 500

Patent

active

042543908

ABSTRACT:
A tuning device including a conductive housing in which are suspended a dielectric substrate. A pair of first and second resonant circuits is disposed on the substrate in parallel with each other. Each resonant circuit is formed by an elongated conductive film and a capacitive element. A grounded conductive strip film is provided between the transmission lines of the first and second resonant circuits to reduce the interstage coupling between the two transmission lines with a resultant decrease in spacing between them.

REFERENCES:
patent: 2754484 (1956-07-01), Adams
patent: 3569850 (1971-03-01), Wegener et al.

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