1. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 1 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Antenna Design for mmW WPAN System] Date Submitted: [ 14 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] 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.

2. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 2 Antenna Design for millimeter-Wave WPAN System

3. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 3 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. Overview

4. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 4 2x2 Elements Antenna 70GHz band LO:73.0GHz IF: 1.5±0.31GHz 8x8 elements antenna 60GHz band no1 LO:62.9GHz IF:1.5±0.31GHz 60GHz band no2 LO:65.9GHz IF:1.5±0.31GHz Type of Antenna for Millimeter-Wave Ad-Hoc Access System III

5. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 5 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 Appearance

6. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 6 Aim of Design Circular waveguide array antenna Wide frequency bandwidth High antenna gain Rectangular waveguide 5 stage filter Low insertion loss High rejection for rejection band Circular waveguide array antenna with built-in filter High antenna gain Low insertion loss High rejection for rejection band Small size Filter design Pass band: LO and LSB Rejection band: USB and 2LSB Filters are designed without adjustment.

7. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 7 Antenna Characteristics - 60GHz band 8x8 element antenna - Polarization : Linear More than 25dBi antenna gain is obtained in the unlicensed frequency band (59-67GHz)

8. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 8 Antenna Characteristics - 60GHz band 8x8 element antenna - Polarization : Linear

9. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 9 Antenna Characteristics - 70GHz band 2x2 element antenna - Polarization : Right Handed Circular Polarization

10. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 10 Antenna Characteristics - 70GHz band 2x2 element antenna - Polarization : Right Handed Circular Polarization

11. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 11 Antenna Characteristics - 70GHz band 2x2 element antenna - Polarization : Right Handed Circular Polarization

12. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 12 Antenna Characteristics - 70GHz band 2x2 element antenna - Axial ratio measurement About 1m apart

13. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 13 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.

14. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 14 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.

15. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 15 Characteristics of antenna with built-in filter

16. doc.: IEEE 802.15-04/0097r1-mmwi Submission March, 2004 Reed Fisher, Seiji Nishi OkiSlide 16 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 Conclusion