Dual frequency resonant base station antennas for PDC systems in Japan

Author

Ebine, Y.

Author_Institution

NTT Mobile Commun. Network Inc., Kanagawa, Japan

Volume

1

fYear

1999

fDate

11-16 July 1999

Firstpage

564

Abstract

Cellular mobile communication systems are being successfully developed all over the world. To accommodate the increase in the number of mobile phone subscribers, multiple systems accessing different frequency bands are being employed. In 1993, PDC (Personal Digital Cellular) systems started operation in the frequency bands of 800 MHz and 1500 MHz in Japan. The PDC systems of NTTDoCoMo in Japan also use dual frequency bands. Accordingly, the base station antennas used in the PDC system must be dual frequency resonant to reduce the cost and space required for the antenna. This paper presents a commercial dual frequency resonant base station antenna and an operation mechanism for a remote controlled beam tilting system in the vertical plane.

Keywords

UHF antennas; antenna accessories; cellular radio; multifrequency antennas; personal communication networks; 1500 MHz; 800 MHz; Japan; PDC systems; Personal Digital Cellular; cellular mobile communication; dual frequency resonant base station antennas; operation mechanism; remote controlled beam tilting system; Bandwidth; Base stations; Dipole antennas; Electrical capacitance tomography; Impedance; Patch antennas; Phase shifters; Reflector antennas; Resonance; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1999. IEEE

Conference_Location

Orlando, FL, USA

Print_ISBN

0-7803-5639-x

Type

conf

DOI

10.1109/APS.1999.789202

Filename

789202