Study of High Isolation Techniques for Surface Acoustic Wave Duplexer Modules
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概要
- 論文の詳細を見る
The isolation characteristics between transmitter and receiver ports for surface acoustic wave (SAW) antenna duplexer modules are studied. Three new techniques are developed to achieve the desired isolation performances in this study. Optimized phase shifter conditions are solved analytically. An improved switching circuit is proposed for cancellation of the inductive element of a pin-diode. A design rule of distance between two lines for SAW antenna duplexer modules is also proposed. The obtained condition and circuit are applied to an extended global system for mobile communication/digital cellular system (EGSM/DCS) dual-band and an extended global system for mobile communication/digital cellular system/personal communication system (EGSM/DCS/PCS) triple-band SAW antenna duplexer modules. Sufficiently high isolation characteristics are obtained.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-05-15
著者
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Ikeda Soichiro
Hitachi Media Electronics Ltd.
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Hosaka Norio
Hitachi Media Electronics Ltd.
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Shiba Takashi
Hitachi Media Electronics Ltd.
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Hikita Mitsutaka
Central Research Lab. Hitachi Ltd.
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Hosaka Norio
Hitachi Media Electronics Ltd., 501 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Ishizaki Tatsuhiko
Hitachi Media Electronics Ltd., 501 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Kamogawa Naoko
Hitachi Media Electronics Ltd., 501 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Takagi Taku
Digital Media System R&D Division, Hitachi Ltd., 292 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Katagishi Makoto
Digital Media System R&D Division, Hitachi Ltd., 292 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Katagishi Makoto
Digital Media System R&D Division, Hitachi Ltd., 292 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Ikeda Soichiro
Hitachi Media Electronics Ltd., 501 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
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Hikita Mitsutaka
Central Research Laboratory, Hitachi Ltd., Higashikoigakubo 1-280 Kokubunji-shi, Tokyo 185-8601, Japan
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Takagi Taku
Digital Media System R&D Division, Hitachi Ltd., 292 Yoshida-cho, Totsuka-ku, Yokohama 244-0817, Japan
関連論文
- 1.5-GHz SAW Miniature Antenna Duplexer Used in Personal Digital Cellular (Special Issue on Microwave Devices for Mobile Communications)
- Derivation of New Equivalent Circuit for Interdigital Transducers with Leaky SAWs Using Integral Equation Approach
- Study of High Isolation Techniques for Surface Acoustic Wave Duplexer Modules
- Influence of Underlayer Materials on Preferred Orientations of Sputter-Deposited AlN/Mo Bilayers for Film Bulk Acoustic Wave Resonators
- Study of Electrostatic Discharge Durability for Surface Acoustic Wave Module
- Characteristics of Surface Acoustic Wave Coupler Using Quadrature Unidirectional Transducer Structure