Saw duplexer design for WCDMA system

Author

Shiba, Takashi ; Hikino, Osamu ; Kondo, Seima ; Kamogawa, Naoko

Author_Institution

Hitachi Media Electron. Co., Ltd., Yokohama, Japan

fYear

2009

fDate

20-23 Sept. 2009

Firstpage

911

Lastpage

914

Abstract

Some relations between sensitivity performances and duplexer performances (losses, isolations between Tx and Rx terminals) are obtained. We simulate system noise figure levels from duplexer performances and low noise amplifier parameters by using a nonlinear NF model at the viewpoint of a system design. A nonlinear equivalent circuit model is proposed for analyzing distortion of SAW duplexer. Inter modulation distortion parameters are directly calculated by using the above nonlinear model. Consequently, desired duplexer performances to achieve sufficient system performances of WCDMA terminals can be determined by these procedures.

Keywords

acoustic transducers; code division multiple access; code division multiplexing; intermodulation distortion; surface acoustic wave devices; SAW duplexer design; SAW duplexer distortion analysis; WCDMA system; WCDMA terminals; duplexer performances; intermodulation distortion parameters; low noise amplifier parameters; nonlinear equivalent circuit model; nonlinear noise figure model; sensitivity performances; system noise figure levels; Circuit noise; Circuit simulation; Equivalent circuits; Low-noise amplifiers; Multiaccess communication; Noise figure; Noise level; Noise measurement; Nonlinear distortion; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium (IUS), 2009 IEEE International

Conference_Location

Rome

ISSN

1948-5719

Print_ISBN

978-1-4244-4389-5

Electronic_ISBN

1948-5719

Type

conf

DOI

10.1109/ULTSYM.2009.5441474

Filename

5441474