Low loss SAW matched filters with low sidelobe sequences and spread spectrum applications

Takashi Shiba, Akitsuna Yuhara, Minoru Moteki, Yasuhiro Ota, Kouji Oda, Kazuo Tsubouchi

研究成果: Paper査読

抄録

A 300 MHz SAW matched filter with reduced mismatch-loss and with a coded transducer by a low autocorrelation sidelobe sequence has been developed for 1 Mbps SS low power-transmission wireless communication modem. This low autocorrelation sequence of 25 chips was searched out to apply DS spreading DPSK signal. The sequence reduced output signal sidelobe 6 dB lower than 31 chip m-sequence, further obtained higher processing gain than that of Barker sequences. Furthermore, to reduce mismatch-loss in temperature stable SAW matched filters, a localized layered structure has been developed. ZnO is deposited only on the normal transducer on a ST-cut quartz substrate, reducing the mismatch-loss by 9 dB. A SS radio modem unit using this SAW matched filter shows a bit error ratio lower than 10-4 with a low current consumption 210 mA, considering such a high data rate 1 Mbps and a low received power -100 dBm.

本文言語English
ページ740-745
ページ数6
出版ステータスPublished - 1996 12 1
外部発表はい
イベントProceedings of the 1996 4th International Symposium on Spread Spectrum Techniques & Applications, ISSSTA'96 - Mainz, Ger
継続期間: 1996 9 221996 9 25

Other

OtherProceedings of the 1996 4th International Symposium on Spread Spectrum Techniques & Applications, ISSSTA'96
CityMainz, Ger
Period96/9/2296/9/25

ASJC Scopus subject areas

  • 工学(全般)

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