Title :
Novel configuration of a SAW-dielectric antenna duplexer for Personal Digital Cellular (PDC) phone system with simultaneously transmit-receive packet mode scheme
Author :
Ishizaki, T. ; Nakamura, H. ; Fujii, K. ; Takeda, Y.
Abstract :
A new antenna duplexer has been successfully developed. It is used for Personal Digital Cellular (PDC) handset with simultaneously transmit-receive packet mode scheme. The features of a SAW filter and a dielectric filter are cleverly utilized to create an Rx filter of the duplexer. An excellent attenuation performance and a small size are realized, which characteristics never any conventional filter can achieve. The newly developed filter is widely used in PDC handsets.
Keywords :
antenna accessories; cellular radio; digital radio; mobile handsets; surface acoustic wave filters; PDC handset; Personal Digital Cellular phone system; Rx filter; SAW filter; antenna duplexer; attenuation characteristics; dielectric filter; simultaneous transmit-receive packet mode; Attenuation; Circuits; Dielectrics; Insertion loss; Receiving antennas; Resonator filters; SAW filters; Switches; Telephone sets; Transmitting antennas;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210978
