Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency
Patent
1987-08-19
1990-03-20
Hille, Rolf
Telecommunications
Receiver or analog modulated signal frequency converter
Signal selection based on frequency
455340, 343711, 343713, 343850, H04B 108, H01Q 132
Patent
active
049107968
ABSTRACT:
An automobile antenna including a high frequency signal processing unit provided near an antenna where the processing unit only tunes in a designated frequency band and amplifies it and further detects the amplified signal. The high frequency signal processing unit also adjusts the tuned frequency band at the high frequency signal processing unit based upon a tracking signal sent from an automobile receiver. Since the high frequency signal processing unit is provided adjacent to antennas, that is, near a glass antenna or mounted on an antenna mast, a loss which occur between the antenna and the receiver can be fully compensated for and noise interference can be avoided.
REFERENCES:
patent: 4132951 (1979-01-01), Cochran et al.
patent: 4247954 (1981-01-01), Sauer
patent: 4334323 (1982-06-01), Moore
patent: 4531232 (1985-07-01), Sakurai
Nakase Kazuhiko
Yamamoto Yuzo
Harada Kogyo Kabushiki Kaisha
Hille Rolf
Wimer Michael C.
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