Telecommunications – Transmitter and receiver at same station – Convertible
Patent
1987-10-26
1989-07-18
Griffin, Robert L.
Telecommunications
Transmitter and receiver at same station
Convertible
343715, H04B 140
Patent
active
048500348
ABSTRACT:
A method for installing a cellular telephone transceiver in a vehicle having an existing FM receiver and matching quarter-length monopole antenna comprises connecting the cellular telephone to the existing antenna. The connection between the existing antenna and receiver may be broken and an adapter provided. The purpose of the adapter is to connect the antenna to a junction, to insert a low-pass filter between the existing receiver and the junction and to insert a high-pass filter or impedance matching device between the cellular telephone and the junction. The antenna functions as a two-wavelength monopole for the higher frequence cellular telephone transceiver.
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Griffin Robert L.
Kuntz Curtis
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