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Advanced Antenna Design for mmW WPAN Systems

This submission outlines the technical requirements for a millimeter-wave WPAN system. The document discusses antenna design, frequency allocation, IF processing, transmission methods, and antenna characteristics like gain and polarization.

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Advanced Antenna Design for mmW WPAN Systems

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Antenna Design for mmW WPAN System] Date Submitted: [ 18 March 2004] Source: [Reed Fisher] Company [Oki Electric Industry Co., Ltd.] Address [2451E. Maddox Rd. Buford, GA 30519 USA] Voice:[+1-770-271-0529]　E-Mail:[reedfisher@juno.com] [Seiji Nishi] Company [Oki Electric Industry Co., Ltd.] Address [3-4 Hikari-no-oka, Yokosuka, Kanagawa 239-0847, Japan] Voice:[+81-46-847-5148]　Fax :[+81-46-847-5149]　E-Mail:[nishi646@oki.com] [Hiroyo Ogawa] Company [Communication Research Laboratory, Incorporated Administrative Agency] Address [3-4 Hikarino-oka, Yokosuka, Kanagawa, 239-09847 Japan.] Voice: [81-46-847-5066], FAX: [81-46-847-5079] E-Mail:[hogawa@crl.go.jp] Re : [] Abstract:[Description of Proposed technical requirements for mm-Wave WPAN ] Purpose:[Contribution for millimeter-wave interest group ] Notice :This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release:The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  2. Antenna Design for millimeter-Wave WPAN System Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  3. Oki/CRL WPAN information distribution system APT = Access Point Terminal MT = Mobile Terminal • Basic Oki/CRL system based on 802.15.3a requirements IP network Contents Server APT1 APT2 APT3 Spot-type ad hoc Information Distribution system MT MT MT MT MT(out of service) Ref:IEEE802.15-03/119r4 Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  4. Frequency allocation of IF band BB & IF processing BB IF f1 f4 f2 f3 Input data Packet distribute MAC control Tx Channel code/decode Modulator /Demodulator BPF BPF 1266MHz f1 Channel #1 Σ Σ Modulator /Demodulator Channel code/decode BPF 156 MHz BPF 1422MHz RF f2 Channel #2 Channel code/decode Modulator /Demodulator BPF Rx BPF 1768MHz f4 Channel #4 Base Band (BB) & IF processing Ref:IEEE802.15-03/119r4 Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  5. ( )2 IF input Pt Pr Local leak DSB mixer Transmitter Receiver SSB B 2B IF output LNA T fc fc+fi fi DSB fc B B B IM2 f fc-fi fc fc+fi B fi RF processing • Transmission • Single RF carrier is used. • Available Transmission method : • -Single Side band (SSB) :Basic proposal • -Double Side band (DSB):Optional proposal • Reception of side band transmission • Complete cancellation of phase-noise and frequency -offset by self-heterodyne • (square law) detection Ref:IEEE802.15-03/119r4 Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  6. Overview • 8x8 elements and 2x2 elements circular waveguide array antennas have been developed for millimeter-wave ad hoc wireless access system. • To realize single side band self-heterodyne scheme with small size, these antennas have built-in 5stage waveguide filters. • The antenna gain of more than 25dBi is measured for 8x8 element antenna, and the loss of 5stage filter is less than 1.0dB. Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  7. Type of Antenna for Millimeter-Wave Ad-Hoc Access System III 60GHz bandno1 LO:62.9GHz IF:1.5±0.31GHz 60GHz band no2 LO:65.9GHz IF:1.5±0.31GHz 8x8 elements antenna 2x2 Elements Antenna 70GHz band LO:73.0GHz IF: 1.5±0.31GHz Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  8. Appearance Outline drawing of 2x2 circular wave guide array antenna with built-in filter. Size is 40mmx24mmx11mm. Photograph of 8x8 circular waveguide array antenna with built-in filter. Size is 45.6mmx45.6mmx11mm Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  9. Aim of Design Circular waveguide array antenna Wide frequency bandwidth High antenna gain Circular waveguide array antenna with built-in filter High antenna gain Low insertion loss High rejection for rejection band Small size Rectangular waveguide 5 stage filter Low insertion loss High rejection for rejection band Filter design Pass band: LO and LSB Rejection band: USB and 2LSB Filters are designed without adjustment. Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  10. Antenna Characteristics - 60GHz band 8x8 element antenna - Polarization : Linear More than 25dBi antenna gain is obtained in the unlicensed frequency band (59-67GHz) Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  11. Antenna Characteristics - 60GHz band 8x8 element antenna - Polarization : Linear Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  12. Antenna Characteristics - 70GHz band 2x2 element antenna - Polarization : Right Handed Circular Polarization Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  13. Antenna Characteristics - 70GHz band 2x2 element antenna - Polarization : Right Handed Circular Polarization Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  14. Antenna Characteristics - 70GHz band 2x2 element antenna - Polarization : Right Handed Circular Polarization Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  15. Antenna Characteristics - 70GHz band 2x2 element antenna - Axial ratio measurement About 1m apart Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  16. Filter Characteristics -5 stage rectangular waveguide filter- The insertion loss in pass band (LO and LSB) is lower than –2dB. The rejection for USB is higher than –30dB. Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  17. Filter Characteristics -5 stage rectangular waveguide filter- The insertion loss in pass band (LO and LSB) is lower than –2dB. The rejection for USB is higher than –30dB. Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  18. Characteristics of antenna with built-in filter Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

  19. Conclusion • We developed the 2x2 element circular polarized (RHCP) antenna with built-in filter for 70GHz band ad hoc wireless link, and 8x8 element linear polarized antenna with built-in filter for 60GHz band wireless link and good characteristics are obtained. • The antenna gain of 8x8 element antenna is as large as 25.5dBi without filter. The loss of the filter for 70GHz band wireless link in pass band is lower than 1.0dB. The rejection for USB is larger than 30dB. • These results confirmed that the circular waveguide array antenna is suitable for broadband millimeter-wave wireless system. • Also we realized very small size antenna with built-in filter. The size of the 2x2 element antenna with built-in filter is 40mmx24mmx11mm, and that of the 8x8 element antenna is as small as 45.6mmx45.6mmx11mm Reed Fisher, Seiji Nishi Oki, Hiroyo Ogawa CRL

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