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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS)

Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS). Submission Title: [CRL-UWB Consortium – Ultra-Wideband Antenna] Date Submitted: [January 2004] Source: [Kamya Yekeh Yazdandoost, Ryuji Kohno] Company [(1) Communications

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS)

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [CRL-UWB Consortium – Ultra-Wideband Antenna] Date Submitted: [January 2004] Source: [Kamya Yekeh Yazdandoost, Ryuji Kohno] Company [(1) Communications Research Laboratory (CRL), (2) CRL-UWB Consortium] Connector’s Address [3-4, Hikarino-oka, Yokusuka, 239-0847, Japan] Voice: [+81-56-847-5435], FAX: [+81-46-847-5431] E-mail: [yazdandoost@crl.go.jp, kohno@crl.go.jp] Re: [IEEE P802.15 Alternative PHY Call for Proposals, IEEE P802.15-02/327r7] Abstract: [This presentation is Introduction to the Ultra-Wideband Antenna for UWB system.] Purpose: [Antenna for 802.15.TG3a] 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.] CRL-UWB Consortium

  2. ULTRA-WIDEBAND ANTENNA Kamya Yekeh Yazdandoost † , Ryuji Kohno †‡ † Communications Research Laboratory (CRL) & CRL-UWB Consortium ‡ Yokohama National University CRL-UWB Consortium

  3. Presentation Overview • Summary of Previously Proposed Antenna • New UWB Antenna Design • Results • Conclusions CRL-UWB Consortium

  4. Previous Antenna Prototype CRL-UWB Consortium

  5. Summary of Previous Antenna • A thin and small antenna on FR-4 substrate • Frequency ranged covered by antenna is 3.8 - 10.6 GHz • VSWR = 2.8 • Return loss ≈ -6.5 dB • Gain ≈ 2.2 - 4.7 dBi CRL-UWB Consortium

  6. New UWB Antenna Design Prototype Size: 44 × 20.5 × 0.46 mm 20.5 mm 0.46 mm 44 mm Substrate: Teflon (εr = 2.17 , tanθ = 0.0006) Patch: Copper (18 um) Feed: Microstrip Line 50 Ω CRL-UWB Consortium

  7. Results VSWR New Design Bow-Tie Antenna Frequency (GHz) CRL-UWB Consortium

  8. Results Return Loss (dB) Bow-Tie Antenna New Design Frequency (GHz) CRL-UWB Consortium

  9. Results Gain (dBi) Bow-Tie Antenna New Design Frequency (GHz) CRL-UWB Consortium

  10. Radiation Pattern Results Etotal (dB) at f = 3.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  11. Radiation Pattern (Cont.) Results Etotal (dB) at f = 4.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  12. Radiation Pattern (Cont.) Results Etotal (dB) at f = 5.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  13. Radiation Pattern (Cont.) Results Etotal (dB) at f = 6.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  14. Radiation Pattern (Cont.) Results Etotal (dB) at f = 7.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  15. Radiation Pattern (Cont.) Results Etotal (dB) at f = 8.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  16. Radiation Pattern (Cont.) Results Etotal (dB) at f = 9.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  17. Radiation Pattern (Cont.) Results Etotal (dB) at f = 10.5 (GHz) for ------- φ= 0oφ= 90o CRL-UWB Consortium

  18. Results 3D Radiation Pattern New Design Bow-Tie Antenna CRL-UWB Consortium

  19. Conclusions • A thin and small antenna on Teflon substrate • Easy to design for on chip device • Satisfied the required bandwidth for UWB systems • Greater than 4 dBi gain was shown to be achievable over • the frequency range • The 3D radiation pattern of antenna is showing that, it has excellent performance for wireless devices, especially for UWB system CRL-UWB Consortium

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