Title :
New miniature SAW antenna duplexer used in GHz-band digital mobile cellular radios
Author :
Hikata, M. ; Shibagaki, N. ; Asai, K. ; Sakiyama, K. ; Sumioka, A.
Author_Institution :
Central Res. Lab., Hitachi Ltd., Tokyo, Japan
Abstract :
New filters used in an antenna duplexer which is applied to GHz-band digital cellular radios were developed. Taking 1.5 GHz PDC, we have achieved low insertion losses of 0.8 and 1.6 dB for T1 and R1 filters, respectively. The developed duplexer is 1.4×0.6×0.2 cm3, several-time smaller than a conventional dielectric-filter duplexer. It also satisfied all required specifications and provided sufficient power-handling capabilities
Keywords :
UHF filters; antenna accessories; cellular radio; digital radio; mobile antennas; surface acoustic wave filters; time division multiple access; 0.8 dB; 1.5 GHz; 1.6 dB; GHz band; TDMA; UHF; digital mobile cellular radios; insertion losses; miniature SAW antenna duplexer; power-handling capabilities; Digital filters; Digital modulation; Insertion loss; Land mobile radio cellular systems; Mobile antennas; Personal communication networks; Phase modulation; Quadrature phase shift keying; Surface acoustic waves; Time division multiple access;
Conference_Titel :
Ultrasonics Symposium, 1995. Proceedings., 1995 IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2940-6
DOI :
10.1109/ULTSYM.1995.495536
