Title :
Study of triple transit echo for time sidelobe of SAW matched filter
Author :
Shiba, Takashi ; Yuhara, A. ; Oda, Koji ; Tsubouchi, Kazuo
Author_Institution :
Hitachi Media Electron. Ltd., Yokohama, Japan
Abstract :
Surface Acoustic Wave (SAW) matched filter is a key-device for Spread Spectrum (SS) communication. We have shown that the Triple Transit Echo (TTE) level of a matched filter for the SS signal is lower than that of an ordinary SAW transversal filter for CW signals even if the external circuit impedance is fully matched to the SAW matched filter. A time-domain analysis using a circuit network tool for various kinds of construction has been used for the matched filter with a 25-chip low autocorrelation sequence. The analysis agreed with the experiments to verify this TTE behavior
Keywords :
electric admittance; equivalent circuits; matched filters; matrix algebra; spread spectrum communication; surface acoustic wave filters; time-domain analysis; BPSK signal response; SAW matched filter; spread spectrum communication; time sidelobe; time-domain analysis; triple transit echo; Admittance; Autocorrelation; Equivalent circuits; Impedance; Matched filters; Surface acoustic wave devices; Surface acoustic waves; Time domain analysis; Time factors; Transversal filters;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.583956
