Television tuner for three different frequency ranges

Details Television tuner for three different frequency ranges Television tuner for three different frequency ranges

1987-10-01

1989-04-18

Gensler, Paul

Tuners

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

Reactance tuning

334 47, 455191, H03J 524

Patent

active

048230995

ABSTRACT:
A television tuner for three different frequency ranges comprises a common antenna connection for three input filter circuits (1, 2, 3). In order to obtain a simple circuit design which involves negligible mutual capacitive loads from the input filter circuits (1, 2, 3), the antenna connection (4) is spatially associated with the input filter circuit (3) for the highest frequency range and is directly connected to one end of a coupling conductor (5). The coupling conductor (5) is series-connected directly with the connection for input filter circuit (1) of the lowest frequency range I and, via a switching diode (11), with the input filter circuit (2) for the medium frequency range II. A further switch (12) detunes the input filter circuit (3) for the highest frequency range III if one of the other input filter circuits (1, 2) is activated.

REFERENCES:
patent: 3980957 (1976-09-01), Putzer
patent: 4577171 (1986-03-01), Heigl et al.
patent: 4710973 (1987-12-01), Suzuki

Affiliated with

Also associated with

Rating

Television tuner for three different frequency ranges does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Television tuner for three different frequency ranges, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television tuner for three different frequency ranges will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2398865