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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

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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: [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: [[email protected], [email protected]]

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.]

CRL-UWB Consortium


Ultra wideband printed bow tie antenna
ULTRA WIDEBAND PRINTED BOW-TIE ANTENNA Area Networks (WPANS)

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

CRL-UWB Consortium


Presentation overview
Presentation Overview Area Networks (WPANS)

  • 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

CRL-UWB Consortium


Introduction
Introduction Area Networks (WPANS)

  • 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.

CRL-UWB Consortium


Patch antenna
Patch Antenna Area Networks (WPANS)

  • 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?

CRL-UWB Consortium


Traditional printed bow tie antenna
Traditional Printed Bow-Tie Antenna Area Networks (WPANS)

Feed Point

Top view

Patch

Substrate

Side view

Ground Plane

CRL-UWB Consortium


Uwb antenna design challenge
UWB Antenna Design Challenge Area Networks (WPANS)

  • 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

CRL-UWB Consortium


Uwb printed bow tie antenna
UWB Printed Bow-Tie Antenna Area Networks (WPANS)

Top view

Substrate

Side view

CRL-UWB Consortium


Wideband mechanism of printed bow tie antenna
Wideband Mechanism of Printed Bow-Tie Antenna Area Networks (WPANS)

L

L

C

C

CRL-UWB Consortium


Results
Results Area Networks (WPANS)

Field Distributions

CRL-UWB Consortium


Results1
Results Area Networks (WPANS)

VSWR

Magnitude of VSWR

Frequency GHz

VSWR< 3 (3.8 to 10.6GHz)

CRL-UWB Consortium


Results2
Results Area Networks (WPANS)

S11

Magnitude of Scattering Matrix (dB)

Frequency GHz

S11< -6 dB (3.8 to 10.6GHz)

CRL-UWB Consortium


Results3
Results Area Networks (WPANS)

GAIN

Magnitude of Gain (dBi)

Frequency (GHz)

Gain > 2 dBi (3 to 10.6GHz)

CRL-UWB Consortium


Radiation Pattern Area Networks (WPANS)

Results

(a)

(b)

Radiation patterns in (a) φ= 0o and (b) φ= 90o for the proposed antenna at 3.1 GHz.

CRL-UWB Consortium


Radiation Pattern (Cont.) Area Networks (WPANS)

Results

(a)

(b)

Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 5.1 GHz.

CRL-UWB Consortium


Radiation Pattern (Cont.) Area Networks (WPANS)

Results

(a)

(b)

Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 7.1 GHz.

CRL-UWB Consortium


Radiation Pattern (Cont.) Area Networks (WPANS)

Results

(a)

(b)

Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 9.1 GHz.

CRL-UWB Consortium


Results4
Results Area Networks (WPANS)

3D Radiation Pattern

Z

Antenna

y

x

CRL-UWB Consortium


Antenna prototype
Antenna Prototype Area Networks (WPANS)

CRL-UWB Consortium


Conclusions Area Networks (WPANS)

  • A thin and small antennas on FR-4 substrate

  • Easy to design for on chip device

  • Satisfied the required bandwidth for UWB systems

  • Greater than 2 dBi gain was shown to be achievable over

  • the frequency range

  • The 3D radiation pattern of antenna is showing that, it has . excellent performance for wireless devices, especially for .. UWB system

CRL-UWB Consortium


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