Tuner circuit having a switching diode to change receiving bands

Details Tuner circuit having a switching diode to change receiving bands Tuner circuit having a switching diode to change receiving bands

1994-07-19

1995-10-31

Gensler, Paul

Tuners

With switching means

334 15, 334 27, H03J 524

Patent

active

054633621

ABSTRACT:
A tuner circuit is basically composed of: a series of a low-band coil and a high-band coil disposed on the signal side; a series of a low-band coil and a high-band coil disposed on the earth side; and a switching diode disposed between a junction of the low-band coil and high-band coil on the signal side and another junction of the low-band coil and high-band coil on the earth side. Further, the junction of the low-band coil and high-band coil on the signal side is connected to a band switching terminal via a first bias resistor while an input side terminal of the low-band coil on the signal side is connected with a second bias resistor.

REFERENCES:
patent: 3980957 (1976-09-01), Putzer
patent: 4573211 (1986-02-01), Kupfer

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