| Presentation | 1995/6/27 Study of LowLoss SAW Matched Filters with Low Sidelobe Sequences Takashi Shiba, Akitsuna Yuhara, Yasuhiro Ota, Yoshihiro Yamada, Minoru Moteki, Kouji Oda, Kazuo Tsubouchi, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For direct sequence (DS) spread spectrum (s-s) communication systems with DPSK modulation, we have searched out new pseudo noise (PN) sequences. Furthermore, a new construction of a low loss SAW matched filter is developed, comprising localized ZnO-layered structure on a quartz crystal. As a result of the sequences and the construction, 14dB (6dB improvement on the conventional m-sequences) peak vs. sidelobe of correlated output-signal and 9dB lower loss than that of conventional one without ZnO film was achieved for a 300MHz SAW matched filter corresponding to the above PN-sequences with 25chips. We have applied these matched filters to SS rf-modem-units for weak power digital communications. In these modem-units the high data-rate (1Mbps), long communication distance (about 20m) and low current (210mA when received) performances are obtained. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | spread spectrum communication / matched filter / self-correlation / low loss / SAW |
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| Conference Information | |
| Committee | US |
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| Conference Date | 1995/6/27(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Ultrasonics (US) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study of LowLoss SAW Matched Filters with Low Sidelobe Sequences |
| Sub Title (in English) | |
| Keyword(1) | spread spectrum communication |
| Keyword(2) | matched filter |
| Keyword(3) | self-correlation |
| Keyword(4) | low loss |
| Keyword(5) | SAW |
| 1st Author's Name | Takashi Shiba |
| 1st Author's Affiliation | Multimedia Systems R&D Division Hitachi Ltd.() |
| 2nd Author's Name | Akitsuna Yuhara |
| 2nd Author's Affiliation | Multimedia Systems R&D Division Hitachi Ltd. |
| 3rd Author's Name | Yasuhiro Ota |
| 3rd Author's Affiliation | Multimedia Systems R&D Division Hitachi Ltd. |
| 4th Author's Name | Yoshihiro Yamada |
| 4th Author's Affiliation | Multimedia Systems R&D Division Hitachi Ltd. |
| 5th Author's Name | Minoru Moteki |
| 5th Author's Affiliation | Hitachi Media Electronics Ltd. |
| 6th Author's Name | Kouji Oda |
| 6th Author's Affiliation | Hitachi Media Electronics Ltd. |
| 7th Author's Name | Kazuo Tsubouchi |
| 7th Author's Affiliation | Research Institute of Electrical Communication, Tohoku University |
| Date | 1995/6/27 |
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| Volume (vol) | vol.95 |
| Number (no) | 132 |
| Page | pp.pp.- |
| #Pages | 8 |
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