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DEVELOPMENT OF HIGHLY-RELIABLE SPREAD-SPECTRUM WIRELESS MODEM

Research Project

Project/Area Number 02402034
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 電子通信系統工学
Research InstitutionTOHOKU UNIVERSITY

Principal Investigator

TSUBOUCHI Kazuo  Tohoku University, Research Institute of Electrical Communication, Professor, 電気通信研究所, 教授 (30006283)

Co-Investigator(Kenkyū-buntansha) MASU Kazuya  Tohoku University, Research Institute of Electrical Communication, Associate Pro, 電気通信研究所, 助教授 (20157192)
Project Period (FY) 1990 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥17,900,000 (Direct Cost: ¥17,900,000)
Fiscal Year 1993: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1992: ¥5,400,000 (Direct Cost: ¥5,400,000)
Fiscal Year 1991: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1990: ¥7,700,000 (Direct Cost: ¥7,700,000)
KeywordsSpread spectrum / wireless communication / wireless modem / surface acoustic wave / SAW convolver / SAW correlator / aluminum nitride / RF IC / スペクトル拡散 / コンボルバー / スペクトラム拡散通信 / ワイヤレスモデム / AIN / コンボルバ- / 微弱電波 / AlN
Research Abstract

The demand for wireless LAN for office automation, factory automation, security control system, computer communication, telecontrol, etc. has continued to increase. Spread spectrum (SS) communication system is the most promising for the wireless LAN, because of its excellent performance known as multiple access, anti-jamming, low probability of intercept, security and anti-detecting. Since the transmission bandwidth of a message in the SS system is spread far in excess of the information bandwidth using a fast PN code, S/N recovery so called process gain can be obtained. Spreading the spectrum causes the difficulty in correlating and synchronizing the PN codes between transmitter and a receiver. Using SAW (Surface Acoustic Wave) devices such as a convolver or correlator, the SS system can be implemented simply and compactly because the synchronization and correlation can be carried out asynchronously.
The purpose of this work is (1) to develop a new compact asynchronous SS modems using … More a highly efficient SAW convolver, which has been developed by one of the investigators, and (2) to develop a fundamental one-chip demodulator on the basis ofAlN/Al_2O_3 combination.
2.4 GHz band has been recently approved for SS communication in Japan as well as in USA.In this work, in order to improve the performance of the asynchronous SS modem using the SAW convolver, we have proposed, designed and evaluated (1) a DBM demodulation method, (2) a time window detection method, and (3) a base band error correction method. On the basis of these results, we have designed and implemented 2.4GHz full-duplex asynchronous SS modem using the SAW convolver. We progress toward the new SS modems for telecontrol, wireless digital voice communication and wireless handy terminals, etc.
We have successfully deposited on epitaxial AlN films on 2-in.-diam. alpha-Al_2O_3 substrate by MOCVD.AlN features the high SAW velocity (5910m/s), moderate mechanical coupling coefficient (1%) and zero-temperature-coefficient-of-delay characteristics. The SAW correlator and SAW delay line on a AlN/alpha-Al_2O_3 substrate were designed and fabricated. We have demonstrated direct detection of 2.4GHz SS signal to base band data.
The SS wireless modem using the SAW convolver and correlator has a great potential for wireless LAN. Less

Report

(5 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • 1990 Annual Research Report
  • Research Products

    (101 results)

All Other

All Publications (101 results)

  • [Publications] N.Mikoshiba: "“Spread Spectrum Communication System for Highly Reliable Wireless LAN",(Invited Paper)" Proceedings of the Second Sendai International Conference,YAGI Symposium on Advanced Technology Bridging the Gap between Light and Microwaves,Sendai,September 1990. 131-136 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 坪内和夫: "「スペクトル拡散通信の応用とデバイス」 (招待論文)" 電子情報通信学会論文誌. J74-B-II. 189-198 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi: "“Application of Spread Spectrum Communicatoin and Its Devices"" Electronics and Communications in Japan (Translated from Denshi Joho Tsushin Gakkai Ronbunshi). 75. 62-74 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Kaneko: "“Epitaxial Growth of AIN Film by Low-Pressure MOCVD in Gas-Beam-Flow Reactor"" Abstracts of the 7th International Conference on Vapour Growth and Epitaxy,Nagoya,July 1991. 102 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Kaneko: "“Epitaxial Growth of AIN Film by Low Pressure MOCVD in Gas-Beam-Flow Reactor"" J.Cryst.Growth.115. 643-647 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase: "“Novel Narrowband Interference Rejection for Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver"" IEEE Second International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'92),Yokohama,November,1992. 267-270 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi: "“An Asynchronous Spread Spectrum Wireless Modem Using SAW Convolver",(Invited Paper)" Proceedings of International Symposium on Surface Acoustic Wave Devices for Mobile Communication,Sendai,December,1992. 215-222 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase: "“Novel Narrowband Interference Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver"" IEICE Trans.Commun.E76-B. 947-954 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase: "“Full-Duplex Asynchronous Spread Spectrum Modem Using a SAW Convolver for 2.4-GHz Wireless LAN"" The Forth International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC'93),Yokohama,September,1993. 302-306 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi: "Full Duplex Transmission Operation of A 2.45-GHz Asynchronous Spread Spectrum Modem Using a SAW Convolver" IEEE Trans.on Ultrason.Ferrolelec.Freq.Contr.40(5). 478-482 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase: "Full-Duplex Asynchronous Spread Spectrum Modem Using a SAW Convolver for 2.4-GHz Wireless LAN" The Forth International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC'93),Yokohama,September,1993. 302-304 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Kasai: "Epitaxial Growth of AIN on Sapphire Substrate for Application to GHz SAW Devices" Proceedings of International Conference on Advanced Microelectronic Devices and Processing,Sendai,March,1994. 569-574 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 黒本晋一: "「SAWコンボルバを用いた非同期型SSモデムの耐妨害復調システム」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会(1990年6月15,16日). SSTA90-25. 51-58 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 森政治: "「米国におけるSS無線モデムの実験」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会(1990年6月15,16日).SSTA90-33. 113-120 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 皆川昭一: "「SAWコンボルバを用いた非同期型SS通信モデム」" 電子情報通信学会 1990年情報理論とその応用,暗号と情報セキュリティジョイントワークショップ講演論文集(1990-8).173-182 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 中瀬博之: "「SAWコンボルバを用いたタイムウィンドウ検波方式によるスプレッドスペクトラム通信システム」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会(1990年3月15,16日).SSTA-91-7. 41-48 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 福井健一: "「SAWコンボルバを用いた非同期SSモデムに適合したベースバンド誤り訂正符号の実装実験」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会(1992年3月11日).SST91-50. 7-12 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 中瀬博之: "「SAWコンボルバを用いたDS/SSタイムウィンドウ検波方式」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会(1992年6月27日).SST92-22. 7-12 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 森政治: "「米国2.4GHz帯におけるSS無線モデム実験」" 電子情報通信学会技術研究報告 (スペクトル拡散研究会)(1992年6月27日).SST-92-27. 37-42 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 南波昭彦: "SAWコンボルバを用いた2.45GHZ完全非同期全二重SSモデム" 電子情報通信学会技術研究報告 (スペクトル拡散研究会),1993年10月. SST-92-94. 19-24 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 葛西徹: "2.45GHz DS/SS用AIN/AI_2O_3構造SAWコリレータ" 電子情報通信学会技術研究報告 (スペクトル拡散研究会),1993年10月. SST-93-45. 7-12 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 中瀬博之: "フロントエンドSAWコリレータを用いた2.4GHz SS無線モデム" 電子情報通信学会技術研究報告 (スペクトル拡散研究会),1993年10月. SST-93-54. 13-18 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 小林秀夫: "SAWコンボルバを用いたDS/SS非同期無線モデムのリモートコントロールへの応用" 電子情報通信学会技術研究報告 (スペクトル拡散研究会),1993年10月. SST-93-55. 19-24 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 田中正則: "「ガスビームフロー方式を用いた減圧MOCVD法によるAIN薄膜の低温形成」" 1990年秋季 第51回応用物理学会学術講演会、岩手大学 (1990年9月28日). 28a-SX-19 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 金子重治: "「ガスビームフローを用いた減圧MOCVD法によるAINエピタキシャル成長(IV)」" 1991年春季 第38回応用物理学関係連合講演会、東海大学平塚校舎(1991年3月31日).31p-ZK-10 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 金子重治: "「ガスビームフロー方式を用いたAINエピタキシャル成長(V)」" 1991年秋季 第52回応用物理学会学術講演会(1991年10月9日〕. 9a-X-21 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 樋口崇: "「ガスビームフロー方式を用いたAINエピタキシャル成長(VI)」" 1992年春季 応用物理学関係連合講演会 (1992年3月28日). 28p-ZB-10 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 樋口崇: "「ガスビームフロー方式を用いたAINエピタキシャル成長(VII)」" 1992年秋季 第53回応用物理学会学術講演会 (1992年9月17). 17p-ZF-2 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 葛西徹: "「ガスビームフロー方式を用いたAINエピタキシャル成長(VIII)」" 1993年春季 第40回応用物理学関係連合講演会 (1993年3月). 1a-ZQ-6 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 中村幸則: "ガスビームフロー方式を用いたAINエピタキシャル成長(IX)" 1993年秋季 第54回応用物理学会学術講演会 (1993年9月). 30p-ZS-7 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 柴田智彦: "減圧MOCVD法により作製したAIN/α-AI_2O_3界面の評価" 1993年秋季 第54回応用物理学会学術講演会 (1993年9月). 30p-ZS-7 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 中村幸則: "クヌーセン圧MOCVDによるAINエピタキシャル膜の面内膜厚分布" 1994年春季 第41回応用物理学関連連合講演会 (1994年3月). (講演予定). (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] N.Mikoshiba and K.Tsubouchi: "Spread Spectrum Communication System for Highly Reliable Wireless LAN" Proceedings of the Second Sendai International Conference, YAGI Symposium on Advanced Technology Bridging the Gap between Light and Microwaves, Sendai, September 1990. 131-136 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi: "Application of Spread Spectrum Communication and Its Devices, (Invited Paper)" Denshi Joho Tsuushin Gakkai Ronbunchi. Vol.J74-B-II, No.5. 189-198 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi: "Application of Spread Spectrum Communication and Its Devices" Electronics and Communications in Japan. Vol.75, No.5. 62-74 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S,Kaneko, et al.: "Epitaxial Growth of AlN Film by Low-Pressure MOCVD in Gas-Beam-Flow Reactor" Abstracts of the 7th International Conference on Vapor Growth and Epitaxy, Nagoya, July 1991. 102 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S,Kaneko, et al.: "Epitaxial Growth of AlN Film by Low Pressure MOCVD in Gas-Beam-Flow Reactor" J.Cryst.Growth.Vol.115, No.1-4. 643-647 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase and K.Tsubouchi: "Novel Narrowband Interference Rejection for Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver" IEEE Second International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'92), Yokohama, November, 1992. 267-270 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi: "An Asynchronous Spread Spectrum Wireless Modem Using SAW Convolver, (Invited Paper)" Proceedings of International Symposium on Surface Acoustic Wave Devices for Mobile Communication, Sendai, December, 1992. 215-222 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase and K.Tsubouchi: "Novel Narrowband Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver" IEICE Trans.Commun.Vol.E76-B, No.6. 947-954 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase, et al.: "Full-Duplex Asynchronous Spread Spectrum Modem Using a SAW Convolver for 2.4-GHz Wireless LAN" The Forth International Symposium on Personal Indoor and Mobile Radio Communications (PIMRC'93), Yokohama, September, 1993. 302-306 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Tsubouchi, et al.: "Full Duplex Transmission Operation of a 2.45-GHz Asynchronous Spread Spectrum Modem Using a SAW Convolver" IEEE Trans. on Ultrason. Ferrolelec. Freq. Contr.Vol.40, No.5. 478-482 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Kasai, et al.: "Epitaxial Growth of AlN on Sapphire Substrate for Application to GHz SAW Devices" Proceedings of International Conference on Advanced Microelectronic Devices and Processing, Sendai, March, 1994. 569-574 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase, et al.: "Full-Duplex Asynchronous Spread Spectrum Modem Using a SAW Convolver for 2.4-GHz Wireless LAN" IEICE Trans.Commun.(to be published). (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Kuromoto et al.: "Anti-jam demodulation system of an asynchronous SS modem using a SAW convolver" IEICE Workshop on Spread Spectrum Communication and Its Application. SSTA90-25. 51-58 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Mori, et al.: "Evaluation of transmission quality of SS modem in USA" IEICE Workshop on Spread Spectrum Communication and Its Application. SSTA90-33. 113-120 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Minagawa, et al.: "Asynchronous SS modem using SAW convolver" IEICE, 1990 Joint Workshop on Cryptograph and Information Security. 173-182 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase, et al.: "Spread spectrum communication system with the time-window detection using s SAW convolver" IEICE Workshop on Spread Spectrum Communication and Its Application. SSTA-91-7. 41-48 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.Fukui, et al.: "Base band error-correction coding for the asynchronous SS modem using a SAW convolver" IEICE Workshop on Spread Spectrum Communication and Its Application. SST91-50. 7-12 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase, et al.: "Time-Window detection of DS/SS signal using a SAW convolver" IEICE Workshop on Spread Spectrum Communication and Its Application. SST92-22. 7-12 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Mori, et al.: "Field tests of spread spectrum wireless modems at 2.4GHz band in USA" IEICE Technical Report. SST92-27. 37-42 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] A.Namba, et al.: "Full-duplex transmission operation of 2.45GHz synchronous spread spectrum modem using a SAW convolver" IEICE Technical Report. SST92-94. 19-24 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Kasai, et al.: "2.45GHz SAW correlator on AlN/Al_2O_3 structure for DS/SS wireless modem" IEICE Technical Report. SST93-45. 7-12 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase, et al.: "2.4GHz SS wireless modem using a front-end SAW correlator" IEICE Technical Report. SST93-54. 13-18 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Kobayashi, et al.: "An Synchronous DS/SS wireless modem using a SAW convolver : an application to remote control" IEICE Technical Report. SST93-55. 19-24 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] M.Tanaka et al.: "Low temperature growth of AlN film by low-pressure MOCVD with gas-beam-flow" Extended Abstracts (The 51st Autumn Meeting, 1990) ; The Japan Society of Applied Physics. 28a-SX-19

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Kaneko, et al.: "Epitaxial growth of AlN film by low pressure MOCVD with gas-beam-flow (IV)" Extended Abstracts (The 38th Spring Meeting, 1991) ; The Japan Society of Applied Physics and Related Societies, (March 31, 1991). 31p-ZK-10

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] S.Kaneko, et al.: "Epitaxial growth of AlN film by low pressure MOCVD with gas-beam-flow (V)" Extended Abstracts (The 52nd Autumn Meeting, 1991) ; The Japan Society of Applied Physics, (October 9, 1991). 9a-X-21

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Higuchi, et al.: "Epitaxial growth of AlN film by low pressure MOCVD with gas-beam-flow" Extended Abstracts (The 39th Spring Meeting, 1992) ; The Japan Society of Applied Physics and Related Societies, (March 28, 1992). 28p-ZB-10

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Higuchi, et al.: "Epitaxial growth of AlN film by low pressure MOCVD with gas-beam-flow (VII)" Extended Abstracts (The 53rd Autumn Meeting, 1992) ; The Japan Society of Applied Physics, (September 17, 1992). 17p-ZF-2

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Kasai, et al.: "Epitaxial growth of AlN film by low pressure MOCVD with gas-beam-flow(VIII)" Extended Abstracts (The 40th Spring Meeting, 1993) ; The Japan Society of Applied Physics and Related Societies, (March, 1993). 1a-ZQ-6

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Nakamura, et al.: "Epitaxial growth of AlN film by low pressure MOVCD with gas-beam-flow (IX)" Extended Abstracts (The 54th Autumn Meeting, 1993) ; The Japan Society of Applied Physics, (September, 1993). 30p-ZS-8

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] T.Shibata, et al.: "Observation of AlN/alpha-Al_2O_3 interface deposited using low pressure MOCVD Epitaxial growth of AlN film by low pressure MOCVD with gas-beam-flow (VIII)" Extended Abstracts (The 54th Autumn Meeting, 1993) ; The Japan Society of Applied Physics, (September 17, 1992). 30p-ZS-7

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Y.Nakamura, et al.: "Uniformity of AlN epitaxial film by Knudsen pressure MOCVD" Extended Abstracts (The 41st Spring Meeting, 1994) ; The Japan Society of Applied Physics and Related Societies, (March 1993). 28p-X-1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] H.Nakase: "Novel Narrowband Rejection for an Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver" IEICE Trans.Commun.E76-B(6). 947-954 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tsubouchi: "Full Duplex Transmission Operation of A 2.45-GHz Asynchronous Spread Spectrum Modem Using a SAW Convolver" IEEE Trans.on Ultrason.Ferrolelec.Freq.Contr.40(5). 478-482 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Nakase: "Full Duplex Asynchronous Spread Spectrum Modem Using a SAW Convolver for 2.4-GHz Wireless LAN" IEICE Trans.Commun.to be published. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] H.Nakase: "Full Duplex Asynchronous Spread Spectrum Modem Using a SAW Convolver for 2.4-GHz Wireless LAN" The Forth International Symposium on Personal Indoor and Mobile Radio Communications(PIMRC'93),Yokohama,September,1993. 302-304 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] T.Kasai: "Epitaxial Growth of AlN on Sapphire Substrate for Application to GHz SAW Devices" Proceedings of International Conference on Advanced Microelectronic Devices and Processing,Sendai,March,1994. 569-574 (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] 南波昭彦: "SAWコンボルバを用いた2.45GHz完全非同期全二重SSモデム" 電子情報通信学会技術研究報告(スペクトル拡散研究会),1993年10月. SST-92-94. 19-24 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 葛西徹: "2.45GHz DS/SS用AlN/Al_2O_3構造SAWコリレータ" 電子情報通信学会技術研究報告(スペクトル拡散研究会),1993年10月. SST-93-45. 7-12 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 中瀬博之: "フロントエンドSAWコリレータを用いた2.4GHz SS無線モデム" 電子情報通信学会技術研究報告(スペクトル拡散研究会),1993年10月. SST-93-54. 13-18 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 小林秀夫: "SAWコンボルバを用いたDS/SS非同期無線モデムのリモートコントロールへの応用" 電子情報通信学会技術研究報告(スペクトル拡散研究会),1993年10月. SST-93-55. 19-24 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 中村幸則: "ガスビームフロー方式を用いたAlNエピタキシャル成長(IX)" 1993年秋季 第54回応用物理学会学術講演会 (1993年9月). 30p-ZS-7 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 柴田智彦: "減圧MOCVD法により作製したAlN/α-Al_2O_3界面の評価" 1993年秋季 第54回応用物理学会学術講演会 (1993年9月). 30p-ZS-7 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 中村幸則: "クヌーセン圧MOCVDによるAlNエピタキシャル膜の面内膜厚分布" 1994年春季 第41回応用物理学関連連合講演会(1994年3月). 講演予定. (1994)

    • Related Report
      1993 Annual Research Report
  • [Publications] K.Tsubouchi,H.Nakase,A.Namba and K.Masu: "Full-Duplex-Transmission Operation of 2.45GHz Asynchronous Spread Spectrum Modem Using a SAW Convolver" IEEE Trans.on Ultrason Ferrolelec.Freq Contr.(1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Nakase and K.Tsubouchi: "Novel Narrowband Rejection for an Asynchronous Spread Spectrum Wireless Modem 1sing a SAW Convolver" Accepted for puvlication in IEICE Trans.(1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] H.Nakase and K.Tsubouchi: "Novel Narrowband Interference Rejection for Asynchronous Spread Spectrum Wireless Modem Using a SAW Convolver." IEEE Second Intemational Symposium on Spread Spectrum Techniques and Applications,Yokohama. (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] K,Tsuvorchi: "AN Asynchronous Spread Spectrum Wireless Modem Using SAW Convolver." Proceedings of Intemational Symposium on Surface Acoustic Wave Devices for Communication,Sendai,(Invited Paper).215-222 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 中瀬 博之,岡田 幸之,南波 昭彦,坪内 和夫: "SAWコンボルバを用いたDS/SSタイムウィンドウ検波方式" 電子情報通信学会技術報告(スペクトル拡散研究会). SST-92. 7-12 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 南波 昭彦,中瀬 博之,益 一哉,坪内 和夫: "SAWコンボルバを用いた2.45GHz完全非同期全二重SSモデム" 電子情報通信学会技術報告(スペクトル拡散研究会). SST-92. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 樋口 崇,岡田 幸之,葛西 徹,坪内 和夫: "ガスビームフロー方式を用いたAINエピタキシャル成長(VII)" 平成4年第53回秋季応用物理学学術講演予稿集. 17P-AF-2 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 葛西 徹,樋口 崇,岡田 幸之,中村 幸則,坪内 和夫: "ガスビームフロー方式を用いたAILエピタキシャル成長(VIII)" 平成5年春季第40回応用物理学関係連合講演会予稿集. (1993)

    • Related Report
      1992 Annual Research Report
  • [Publications] 皆川 昭一,須目 和義,坪内 和夫(3.1節執筆者): "スペクトル拡散信方式応用技術「第3営コンシューマ通信への応用3.1節」分担執筆" トリケップス, 209P (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] 坪内 和夫: "スペクトル拡散通信の応用とデバイス" 電子通信情報学会論分誌 Bー11 (招待論文). J74ーBー11. 189-198 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Kaneko,M.Tanaka,K.Masu,K.Tsubouchi,and N.Mikoshiba: ""Epitaxial Growth of A1N by LowーPressure MOCVD using GasーBeamーFlow Reactor"" Abs.of the 7th International Conference on Vapor Phase Epitaxy,Nagoya,July 14ー16,1991. P.102 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] S.Kaneko,M.Tanaka,K.Masu,K.Tsubouchi,and N.Mikoshiba: ""Epitaxial Growth of A1N by LowーPressure MOCVD using GasーBeamーFlow Reactor"" J.Cryst.Growth. 115. 643-647 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 福井 健一,南波 昭彦,坪内 和夫: "「SAWコンボルバを用いた非同期SSモデムに適合したベ-スバンド誤り訂正符号の実装実験」" 電子情報通信学会技術研究報告(スペクトル拡散研究会). SSTー91. 7-13 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] 金子 重治,樋口 崇,坪内 和夫,御子柴 宣夫: "「ガスビ-ムフロ-方式を用いた減圧MOCVD法によるA1Nエピタキシャル成長(V)」" 1991年秋季応用物理学学術講演会(1991年10月9日). 9a-X-2 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 樋口 崇,金子 重治,岡田 幸之,葛西 徹,坪内 和夫: "「ガスビ-ムフロ-方式を用いた減圧MOCVD法によるA1Nエピタキシャル成長(VI)」" 1992年春季応用物理学関連連合講演会(1992年3月28日). 28P-ZB-10 (1992)

    • Related Report
      1991 Annual Research Report
  • [Publications] N.Mikoshiba and K.Tsubouchi: "Spread Spectrum Communication System for Highly Reliable Wireless LAN" Yagi Symposium on Advanced Technology Bridging the Gap between Light and Microwaves,(1990,Sept.25ー27,Sendai). 48-49 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] S.Kaneko,M.Tanaka,K.Masu,K.Tsubouchi and N.Mikoshiba: ""Epitaxial Growth of AlN Film by Low Pressuer MOCVD in GasーBeamーFlow Reactor"," The 7th International Conference on Vapor Growth and Epitaxy,Nagoya,1991.(1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 坪内 和夫: "スペクトル拡散通信の応用とデバイス" 電子情報通信学会論文誌BーII. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 黒本 晋一、中瀬 博之、福井 健一、坪内 和夫、御子柴 宣夫、: "「SAWコンボルバを用いた非同期型SSモデムの耐妨害復調システム」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会. SSTA90ー25. 51-58 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 森 政治、竹内 慈、郷地 元博、坪内 和夫、: "「米国におけるSS無線モデムの実験」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会. SSTA90ー33. 113-120 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 皆川 昭一、坪内 和夫: "「SAWコンボルバを用いた非同期型SS通信モデム」" 1990年情報理論とその応用、暗号と情報セキュリティジョイントワ-クショップ講演論文集. 〈1990ー8〉. 173-182 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 中瀬 博之、黒本 晋一、福井 健一、坪内 和夫、御子柴 宣夫、: "「SAWコンボルバを用いたタイムウィンドウ検波方式によるスプレッドスペクトラム通信システム」" 電子情報通信学会 スペクトル拡散通信技術とその応用研究会. SSTA91. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 坪内 和夫、御子柴 宣夫、: "「弾性表面波コンボルバを用いた新しい通信方式」" 固体物理. 25(5). 48-54 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田中 正則、金子 重治、黒本 晋一、中瀬 博之、福井 健一、坪内 和夫、御子柴 宣夫: "ガスビ-ムフロ-方式を用いた減圧MOCVD法によるAlN薄膜の低温形成" 平成2年秋季 第51回応用物理学学術講演会. 28a-SX-19 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 金子 重治、田中 正則、樋口 崇、中瀬 博之、福井 健一、岡田 幸之、南波 昭彦、坪内 和夫、御子柴 宣夫: "ガスビ-ムフロ-を用いた減圧MOCVD法によるAlNエピタキシャル成長(IV)" 平成3年春季 第38回応用物理学関連連合講演会. 31p-ZK-10 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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