Automatic computer-aided design of slanted finger SAW filters using a building-block method

Author

Yatsuda, Hiromi ; Yamanouchi, Kazuhiko

Author_Institution

Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan

Volume

1

fYear

1998

fDate

1998

Firstpage

239

Abstract

This paper describes a design procedure for surface acoustic wave (SAW) filters using slanted finger interdigital transducers (SFITs) which are suitable for mid-band or wide-band applications. The SFITs cannot represent the impulse response directly, in contrast of apodized IDTs. A design method for SFITs based on a building-block approach in the frequency domain is described. An automatic computer-aided design tool for SFIT filters has been achieved. The SFIT filters can be designed using a withdrawal weighting for stop-band responses, an aperture weighting for pass-band amplitude responses and a distance weighting for pass-band phase responses

Keywords

electronic design automation; frequency-domain synthesis; interdigital transducers; surface acoustic wave filters; surface acoustic wave transducers; SAW SFIT filter; aperture weighting; building block; computer aided design; distance weighting; frequency domain; impulse response; pass-band amplitude response; pass-band phase response; stop-band response; surface acoustic wave slanted finger interdigital transducer; withdrawal weighting; Acoustic transducers; Acoustic waves; Application software; Design automation; Design methodology; Fingers; Frequency domain analysis; SAW filters; Surface acoustic waves; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE

Conference_Location

Sendai

ISSN

1051-0117

Print_ISBN

0-7803-4095-7

Type

conf

DOI

10.1109/ULTSYM.1998.762136

Filename

762136