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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Antenna Design for mmW WPAN System] PowerPoint PPT Presentation


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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.]

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Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Antenna Design for mmW WPAN System]

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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:[[email protected]]

[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:[[email protected]]

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.

Reed Fisher, Seiji Nishi Oki


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Antenna Design for millimeter-Wave WPAN System

Reed Fisher, Seiji Nishi Oki


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Overview

  • 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.

Reed Fisher, Seiji Nishi Oki


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Type of Antenna for

Millimeter-Wave Ad-Hoc Access System III

60GHz bandno1

LO:62.9GHz

IF:1.5±0.31GHz

60GHz band no2

LO:65.9GHz

IF:1.5±0.31GHz

8x8 elements antenna

2x2

Elements

Antenna

70GHz band

LO:73.0GHz

IF: 1.5±0.31GHz

Reed Fisher, Seiji Nishi Oki


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Appearance

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

Reed Fisher, Seiji Nishi Oki


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Aim of Design

Circular waveguide array antenna

Wide frequency bandwidth

High antenna gain

Circular waveguide array antenna

with built-in filter

High antenna gain

Low insertion loss

High rejection for rejection band

Small size

Rectangular waveguide 5 stage filter

Low insertion loss

High rejection for rejection band

Filter design

Pass band: LO and LSB

Rejection band: USB and 2LSB

Filters are designed without adjustment.

Reed Fisher, Seiji Nishi Oki


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Antenna Characteristics

- 60GHz band 8x8 element antenna -

Polarization : Linear

More than 25dBi antenna gain is obtained in the unlicensed frequency band (59-67GHz)

Reed Fisher, Seiji Nishi Oki


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Antenna Characteristics

- 60GHz band 8x8 element antenna -

Polarization : Linear

Reed Fisher, Seiji Nishi Oki


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Antenna Characteristics

- 70GHz band 2x2 element antenna -

Polarization : Right Handed Circular Polarization

Reed Fisher, Seiji Nishi Oki


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Antenna Characteristics

- 70GHz band 2x2 element antenna -

Polarization : Right Handed Circular Polarization

Reed Fisher, Seiji Nishi Oki


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Antenna Characteristics

- 70GHz band 2x2 element antenna -

Polarization : Right Handed Circular Polarization

Reed Fisher, Seiji Nishi Oki


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Antenna Characteristics

- 70GHz band 2x2 element antenna -

Axial ratio measurement

About 1m apart

Reed Fisher, Seiji Nishi Oki


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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.

Reed Fisher, Seiji Nishi Oki


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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.

Reed Fisher, Seiji Nishi Oki


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Characteristics

of antenna with built-in filter

Reed Fisher, Seiji Nishi Oki


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Conclusion

  • 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

Reed Fisher, Seiji Nishi Oki


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