September 2003 doc IEEE 802 15 03 Project
September 2003 doc. : IEEE 802. 15 -03/##### Project: IEEE P 802. 15 Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [CRL-UWB Consortium – Ultra Wideband Printed Bow-Tie Antenna] Date Submitted: [September 2003] 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 P 802. 15 Alternative PHY Call for Proposals, IEEE P 802. 15 -02/327 r 7] Abstract: [This presentation is Introduction to the Printed Bow-Tie Antenna for UWB system. ] Purpose: [Antenna for 802. 15. TG 3 a] Notice: [This document has been prepared to assist the IEEE P 802. 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 P 802. 15. ] Submission 1 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### ULTRA WIDEBAND PRINTED BOW-TIE ANTENNA Kamya Yekeh Yazdandoost Communications Research Laboratory (CRL) & CRL-UWB Consortium Ryuji Kohno Director, UWB Technology Institute, CRL Professor, Yokohama National University Chair, CRL-UWB Consortium Submission 2 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Presentation Overview • • Introduction Patch Antenna Printed Bow-Tie Antenna UWB Antenna Design Challenge UWB Printed Bow-Tie Antenna Wideband Mechanism of Printed Bow-Tie Antenna Results Conclusions Submission 3 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Introduction • Antenna performance and size have a large impact on the development of wireless system. • It is more complicated to provide the typical parameters like Bandwidth, Efficiency, and Gain within the limited antenna volume. • This is more critical with respect to the UWB Antenna. Submission 4 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Patch Antenna ØPatch antennas are extensively used in different wireless applications due to: • Low profile • Light weight • Easy to fabricate • Low cost ØThe major drawback is narrow bandwidth ØBecause of it limited bandwidth, several designs of broadband patch antenna have been reported Submission 5 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Printed Bow-Tie Antenna Patch Feed Point Top-View Patch Substrate Ground Plane Submission Side-view 6 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### UWB Antenna Design Challenge • Compact size while providing acceptable: 1 - VSWR 2 - Bandwidth 3 - Gain 4 - Efficiency • Omni-directional pattern • To be suitable for on chip design, with good impedance matching • Light weight • Low cost Submission 7 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### UWB Printed Bow-Tie Antenna Patch Substrate Submission 8 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Wideband Mechanism of Printed Bow-Tie Antenna L L C Submission C 9 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Magnitude of VSWR Frequency (GHz) VSWR< 3 (3. 8 to 10. 6 GHz) Submission 10 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Magnitude of Scattering Matrix (d. B) S 11 Frequency (GHz) S 11< -6 d. B (3. 8 to 10. 6 GHz) Submission 11 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Magnitude of Gain (d. Bi) Gain Frequency (GHz) Gain > 2 d. Bi (3 to 10. 6 GHz) Submission 12 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Radiation Pattern (a) (b) Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 3. 1 GHz. Submission 13 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Radiation Pattern (Cont. ) (a) (b) Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 5. 1 GHz. Submission 14 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Radiation Pattern (Cont. ) (a) (b) Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 7. 1 GHz. Submission 15 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Results Radiation Pattern (Cont. ) (a) (b) Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 9. 1 GHz. Submission 16 CRL-UWB Consortium
September 2003 doc. : IEEE 802. 15 -03/##### Conclusions Ø A thin and small antennas on FR-4 substrate Ø Good radiation patterns for wireless devices Ø Satisfied the required bandwidth for UWB systems Ø Greater than 2 d. Bi gain was shown to be achievable over the frequency range Ø Easy to design for on chip device Submission 17 CRL-UWB Consortium
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