1. Slide1Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [CRL-UWB Consortium - Ultra Wideband Printed Bow-Tie Antenna] Date Submitted: [November 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 P802.15 Alternative PHY Call for Proposals, IEEE P802.15-02/327r7] Abstract: [This presentation is Introduction to the Printed Bow-Tie 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.]

2. Slide2Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium ULTRA WIDEBAND PRINTED BOW-TIE ANTENNA Kamya Yekeh Yazdandoost Ryuji Kohno Director, UWB Technology Institute, CRL Professor, Yokohama National University Chair, CRL-UWB Consortium Presented by Yuko Rikuta Communications Research Laboratory (CRL) & CRL-UWB Consortium

3. Slide3Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium 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

4. Slide4Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium 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. It is well-known that the UWB antenna design remains to be the major face in the progress of UWB technology.

5. Slide5Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Patch Antenna  Patch antennas are extensively used in different wireless applications due to: – Low profile – Light weight – Easy to fabricate – Low cost  The major drawback is narrow bandwidth  Because of it limited bandwidth, several designs of broadband patch antenna have been reported  But the question is, a broadband antenna can be UWB antenna ?

6. Slide6Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Traditional Printed Bow-Tie Antenna Patch Ground Plane Side view Top view Feed Point Substrate

7. Slide7Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium 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

8. Slide8Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium UWB Printed Bow-Tie Antenna Substrate Top view Side view

9. Slide9Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Wideband Mechanism of Printed Bow-Tie Antenna L C L C

10. Slide10Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Results Field Distributions

11. Slide11Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Results VSWR< 3 (3.8 to 10.6GHz) Frequency GHz Magnitude of VSWR VSWR

12. Slide12Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Results S11 S11< -6 dB (3.8 to 10.6GHz) Magnitude of Scattering Matrix (dB) Frequency GHz

13. Slide13Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Results Frequency (GHz) Magnitude of Gain (dBi) GAIN Gain > 2 dBi (3 to 10.6GHz)

14. Slide14Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Radiation Pattern Results Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 3.1 GHz. (a) (b)

15. Slide15Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Radiation Pattern (Cont.) Results Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 5.1 GHz. (a) (b)

16. Slide16Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Radiation Pattern (Cont.) Results Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 7.1 GHz. (a) (b)

17. Slide17Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Radiation Pattern (Cont.) Results Radiation patterns in (a) φ = 0 o and (b) φ = 90 o for the proposed antenna at 9.1 GHz. (a) (b)

18. Slide18Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Results 3D Radiation Pattern Antenna Z x y

19. Slide19Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Antenna Prototype

20. Slide20Submission doc.:IEEE802.15-03-0472-00-003a November 2003 CRL-UWB Consortium Conclusions  The 3D radiation pattern of antenna is showing that, it has. excellent performance for wireless devices, especially for.. UWB system  Satisfied the required bandwidth for UWB systems  A thin and small antennas on FR-4 substrate  Greater than 2 dBi gain was shown to be achievable over the frequency range  Easy to design for on chip device