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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: [TaiyoYuden/TRDA Small Form Factor Ceramic Antenna for Low Rate alt-PHY ] Date Submitted: [4 January, 2005]

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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: [TaiyoYuden/TRDA Small Form Factor Ceramic Antenna for Low Rate alt-PHY] Date Submitted: [4 January, 2005] Source: [Hironori Okado(1), Mick Aoki(2)] Company [(1)Taiyo Yuden Co.,Ltd., (2)TRDA Inc.] Address [(1)8-1 Sakaecho Takasaki- shi Gunma 370-8522 Japan, (2)10180 Telesis Court Suite120, San Diego, CA 92121] Voice [(1)+81-27-324-2311, (2)+1-858-554-0755] Fax[(1)+81-27-324-2326, (2)+1-858-455-7578] E-mail [(1)h-okado@jty.yuden.co.jp, (2)maoki@trda-inc.com] Re: [] Abstract: [This presentation is introduction to small form factor ceramic antenna for low rate alt-PHY.] Purpose: [Proposing a RF front-end for standardization by 802.15.4a.] 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. Mick Aoki, Taiyo Yuden/TRDA

  2. Taiyo Yuden / TRDASmall Form Factor Ceramic Antenna for Low Rate alt-PHY Hironori Okado Taiyo Yuden Co.,Ltd. Mick Aoki TRDA Inc. (Taiyo Yuden R&D Center of America) Mick Aoki, Taiyo Yuden/TRDA

  3. Contents • Requirement for RF Front-end • Antenna performance • Filter performance • Conclusion Mick Aoki, Taiyo Yuden/TRDA

  4. Contents • Requirement for RF Front-end • Antenna performance • Filter performance • Conclusion Mick Aoki, Taiyo Yuden/TRDA

  5. Technical requirements for 802.15.4a • Bit rate : 1kb/s to ≥1Mb/s • Range : 30m • Interference mitigation • Low power • Location awareness • Regulatory matters UWB is well suited to 802.15.4a Mick Aoki, Taiyo Yuden/TRDA

  6. Structure of 802.15.4a UWB Radio PHY Antenna RF BB Chip MAC Chip BPF BEF Balun RF Front End Mick Aoki, Taiyo Yuden/TRDA

  7. UWB Band and Other Wireless Standards Cordless phone Microwave Oven 802.15.1/3/4 802.11b/g Cordless phone 802.11a Cell phone 2400 2500 4900 5835 MHz MHz MHz MHz UWB UWB f 3.1GHz 4.9GHz 5.835GHz 10.6GHz 1st generation UWB will use below 802.11a band 2nd generation UWB needs to consider interference from/to 802.11a Mick Aoki, Taiyo Yuden/TRDA

  8. Requirements for Antenna • Non-Directional • Small Form Factor as SD Memory Card • Robust • High Gain TG4a Technical Requirement (Doc: IEEE 15-04-0198-02-004a) P802.15.4a Alt PHY Selection Criteria (Doc: IEEE 15-04-0232-16-004a) Mick Aoki, Taiyo Yuden/TRDA

  9. Requirements for Filter • High Attenuation for Interferences - WLANs (2.4 and 5GHz) - WPANs (802.15.1, 802.15.3, 802.15.4) - Cordless phones (2.4GHz and 5.8GHz) - Cellular phones - Microwave ovens • Low Insertion Loss • Small Form Factor TG4a Technical Requirement (Doc: IEEE 15-04-0198-02-004a) P802.15.4a Alt PHY Selection Criteria (Doc: IEEE 15-04-0232-16-004a) Mick Aoki, Taiyo Yuden/TRDA

  10. Contents • Requirement for RF Front-end • Antenna performance • Filter performance • Conclusion Mick Aoki, Taiyo Yuden/TRDA

  11. 0dBi -a (dB) 1 +a (dB) Isotropic radiation １ １ Definition of Antenna Gain Ideal Radiation Pattern of Non-Directional Antenna (Isotropic Radiation) How to increase gain? Total radiation energy for total polarization radiation +a(dB)  Specific Direction Becomes Big Theoretical limit at zero-loss condition -a(dB)  Other Direction Becomes Weak The Theoretical Maximum Gain for Non-directional Antenna is 0dBi Mick Aoki, Taiyo Yuden/TRDA

  12. A B C D Developed Antenna • Ceramic Antenna is Small. - Element Size : 8 x 6 x 1 mm - Ground Size : 20 x 25 mm (Antenna A) (Size of SD memory : 24 x 32 mm) • Designed for RF tag application • ICs and components can be mounted on board. Antenna needs at least one ground plane. Mick Aoki, Taiyo Yuden/TRDA

  13. 31pcs Probe Antenna Rotate Measurement System Antenna Efficiency and Radiation Pattern Measured by multi-probe antenna measurement system Mick Aoki, Taiyo Yuden/TRDA

  14. A Element Location (1) Antenna A Edge Center Mick Aoki, Taiyo Yuden/TRDA

  15. Element Location (2) Edge Center Mick Aoki, Taiyo Yuden/TRDA

  16. A Influence of Side Ground Antenna A VSWR is degraded by Antenna side ground. Mick Aoki, Taiyo Yuden/TRDA

  17. A B VSWR (1) Antenna A Antenna B Mick Aoki, Taiyo Yuden/TRDA

  18. C D VSWR (2) Antenna C Antenna D Mick Aoki, Taiyo Yuden/TRDA

  19. Efficiency (1) 2.4GHz Band 7~8dB Attenuation Mick Aoki, Taiyo Yuden/TRDA

  20. A Radiation Pattern (1) Antenna A Mick Aoki, Taiyo Yuden/TRDA

  21. B Radiation Pattern (2) Antenna B Mick Aoki, Taiyo Yuden/TRDA

  22. C Radiation Pattern (3) Antenna C Mick Aoki, Taiyo Yuden/TRDA

  23. D Radiation Pattern (4) Antenna D Mick Aoki, Taiyo Yuden/TRDA

  24. Group Delay Sample : Antenna A Mick Aoki, Taiyo Yuden/TRDA

  25. Double Ridge Horn Antenna UWB Antenna Impulse Generator 1 ft Oscilloscope ATT Anechoic Chamber Impulse Response (1) Transmitted Signal at input of Double Ridge Horn Antenna 500ps/Div 10mV/Div Mick Aoki, Taiyo Yuden/TRDA

  26. Impulse Response (2) Received Signal by Antenna A 500ps/Div 10mV/Div Received Signal by Antenna B 500ps/Div 10mV/Div Mick Aoki, Taiyo Yuden/TRDA

  27. Impulse Response (3) Received Signal by Antenna C 500ps/Div 10mV/Div Received Signal by Antenna D 500ps/Div 10mV/Div Mick Aoki, Taiyo Yuden/TRDA

  28. Contents • Requirement for RF Front-end • Antenna performance • Filter performance • Conclusion Mick Aoki, Taiyo Yuden/TRDA

  29. Developed Filter • Ceramic Filter is Small and Robust • Band Pass Filter for 1st generation • Band Elimination Filter against 5GHz band • Performance -Low Insertion loss -High Attenuation • Chips need Balun Mick Aoki, Taiyo Yuden/TRDA

  30. Band Pass Filter (BPF) Dimension : 3.2 x 1.6 x 1.15 mm For 1st generation chip set Mick Aoki, Taiyo Yuden/TRDA

  31. Band Elimination Filter (BEF) Dimension : 6.3 x 3.0 x 1.1 mm Mick Aoki, Taiyo Yuden/TRDA

  32. Balun Dimension : 2.0 x 1.25 x 0.9 mm Dimension : 3.5 x 2.5 x 0.85 mm Mick Aoki, Taiyo Yuden/TRDA

  33. Contents • Requirement for RF Front-end • Antenna performance • Filter performance • Conclusion Mick Aoki, Taiyo Yuden/TRDA

  34. Conclusion • Proposed UWB Antenna meets requirements. - Non-directional, Small, Robust, High Gain - Flat Group Delay, Good Impulse Response • The Antenna Element can be used in the corner of RF tag or module. ICs and components can be mounted on board. There is less wasted space. • Proposed Filter has enough performance to avoid interference. • Accelerate Time to Market. The Antenna and Filters are Available Now. Mick Aoki, Taiyo Yuden/TRDA

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