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

抜粋

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.

元の言語English
ページ740-745
ページ数6
出版物ステータスPublished - 1996 12 1
外部発表Yes
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
Mainz, Ger
期間96/9/2296/9/25

ASJC Scopus subject areas

  • Engineering(all)

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  • これを引用

    Shiba, T., Yuhara, A., Moteki, M., Ota, Y., Oda, K., & Tsubouchi, K. (1996). Low loss SAW matched filters with low sidelobe sequences and spread spectrum applications. 740-745. 論文発表場所 Proceedings of the 1996 4th International Symposium on Spread Spectrum Techniques & Applications, ISSSTA'96, Mainz, Ger, .