Electronic tuner having selectable band sections appropriately b

Details Electronic tuner having selectable band sections appropriately b Electronic tuner having selectable band sections appropriately b

1983-04-25

1986-05-20

LaRoche, Eugene R.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

333 1, H03J 524

Patent

active

045906122

ABSTRACT:
An electronic tuner which includes an SHF band section in addition to ordinary UHF and VHF band sections for use in CATV, for example, has a diode and a resistor both connected between the VHF band section and a VHF band mixer stage. A transistor contained in the mixer stage is always appropriately biased by the diode and resistor, whether the mixer stage functions as a mixer or an amplifier.

REFERENCES:
patent: 4009441 (1977-02-01), Kumagai et al.
patent: 4189678 (1980-02-01), Sakamoto et al.
patent: 4214212 (1980-07-01), Dipietromaria
patent: 4271529 (1981-06-01), Strammello, Jr.
patent: 4326295 (1982-04-01), Matsumoto et al.
patent: 4438529 (1984-03-01), Sato

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