Communications: radio wave antennas – Antennas – With vehicle
Patent
1990-06-26
1992-04-14
Wimer, Michael C.
Communications: radio wave antennas
Antennas
With vehicle
343713, 333 24C, 333 32, H01Q 132
Patent
active
051052016
ABSTRACT:
A glass mounted antenna for car radio including an antenna element having a length that is in a resonant or non-resonant state with respect to FM frequencies, resonance circuits made up with spiral coils and capacitors so as to resonate in the FM band, a band-pass filter that passes only FM signals and no AM signals, and an AM impedance converter having an active element converting high-impedance signals into low impedance signals.
REFERENCES:
patent: 4238799 (1980-12-01), Parfitt
patent: 4764773 (1988-08-01), Larsen et al.
patent: 4779098 (1988-10-01), Blaese
Kawasaki Moriyoshi
Nakase Kazuhiko
Harada Kogyo Kabushiki Kaisha
Le Hoang-anh
Wimer Michael C.
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