Title :
A design of AM/FM mobile telephone triband antenna
Author :
Egashira, Shigeru ; Tanaka, Takayuki ; Sakitani, Akihide
Author_Institution :
Dept. of Electron., Saga Univ., Japan
fDate :
4/1/1994 12:00:00 AM
Abstract :
In vehicles, antennas for AM/FM broadcasting (BC) and cellular mobile telephone (MT) are usually mounted on the car´s body. However, a triband antenna which can be used for both AM/FM BC and MT is more desirable to decrease the number of antennas. An outline of the general design for the AM/FM MT triband antenna with coils is described. Next, the design of a new triband antenna with double sleeves instead of coils is presented. The double sleeves consist of two coaxial lines connected in series. It is shown that the triband antenna with double sleeves has good characteristics, including radiation patterns and voltage standing-wave ratio (VSWR)
Keywords :
amplitude modulation; cellular radio; frequency modulation; mobile antennas; radio broadcasting; radiotelephony; AM/FM broadcasting; VSWR; cellular mobile telephone; coaxial lines; coils; double sleeves; mobile telephone triband antenna; radiation patterns; vehicles; voltage standing-wave ratio; Antenna radiation patterns; Antennas and propagation; Coils; Current distribution; Dipole antennas; Directive antennas; Mobile antennas; Telephony; Transmitting antennas; Vehicles;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
