AM-FM-cellular mobile telephone tri-band antenna with double sleeves

Author

Tanaka, T. ; Egashira, S. ; Sakitani, A.

Author_Institution

Dept. of Electron. Saga Univ., Japan

fYear

1991

fDate

24-28 June 1991

Firstpage

958

Abstract

An AM-FM cellular mobile telephone (MT) triband antenna with double sleeves has been designed and measured. The radiation patterns and the VSWR (voltage standing wave ratio) of the triband antenna were good at the transmitting frequency of the MT. At the receiving frequency of the MT, the radiation patterns were similar to those for a lambda /4 monopole antenna, and the VSWR was good (2.0 or less) in the 883-890 MHz range. The antenna has such a length as to make the radiation efficiency sufficient. As a sleeve can be made precisely, the antenna with sleeves is suitable for mass production. A sleeve can be used to realize a triband antenna effectively.<>

Keywords

amplitude modulation; antenna radiation patterns; cellular radio; frequency modulation; mobile antennas; AM-FM cellular mobile telephone; VSWR; double sleeved triband antenna; radiation efficiency; radiation patterns; receiving frequency; transmitting frequency; voltage standing wave ratio; Antenna arrays; Coils; Current distribution; Directive antennas; Filters; Frequency; Mobile antennas; Receiving antennas; Telephony; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.175003

Filename

175003