Title :
Determination method of the loading impedances of beam tilting antenna with passive loads
Author :
Tanaka, T. ; Nakahara, F. ; Egashira, S. ; Sakitani, A.
Author_Institution :
Dept. of Electron. Eng., Saga Univ., Japan
Abstract :
For the base station antenna of cellular mobile telephone systems, a beam tilting antenna, which achieves down-beam tilting of the main beam with smaller cell size, is desired. Such a beam tilting is realized easily by a wire antenna with loads. If we can obtain the loading impedances from the desired tilt angle in the design it is practically useful. In this paper, a determination method of the impedances loaded on the antenna for a desired beam tilting is described.
Keywords :
cellular radio; electric impedance; land mobile radio; wire antennas; 900 MHz; UHF antenna; base station antenna; beam tilting antenna; cellular mobile telephone systems; design; down-beam tilting; loading impedances; main beam; passive loads; tilt angle; wire antenna; Base stations; Current distribution; Distributed computing; Equations; Impedance; Loaded antennas; Mobile antennas; Mobile computing; Moment methods; Wire;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631481
