SAW antenna duplexer module using SAW-resonator-coupled filter for PCN system

被引：0
|
作者：
Shibagaki, N [1 ]
Sakiyama, K [1 ]
Hikita, M [1 ]
机构：
[1] Hitachi Ltd, Cent Res Lab, Kokubunji, Tokyo 185, Japan
来源：
1998 IEEE ULTRASONICS SYMPOSIUM - PROCEEDINGS, VOLS 1 AND 2 | 1998年
关键词：
D O I：
暂无
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Surface Acoustic Wave (SAW) filters has been widely applied to radio personal communication to reduce size and volume of the radio terminals. In this paper, we discuss the application of SAW filters used in 1.8-GHz band antenna duplexer module for Personal Communications Network (PCN) systems. The module consisting of a receiver top filter (R1), a transmitter final stage filter (T1), lumped matching-circuit elements and lumped phase-shift circuits has been developed. The duplexer module has an insertion loss of less than 1.6 dB (1710-1785 MHz) in the Tx-to-antenna path and of less than 3.3 dB (1805-1880 MHz) in the antenna-to-Rx path, respectively. It also has the size of 14 x 8 x 1.8 mm(3) and the weight of 0.4g, which achieved about one-fifth reduction compared with the conventional dielectric-resonator filter duplexers.
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页码：13 / 16
页数：4
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