project: ieee p802.15 working group for wireless personal area networks (wpans)
DESCRIPTION
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: [September 2003] Source: [Kamya Yekeh Yazdandoost, Ryuji Kohno] Company [(1) Communications - PowerPoint PPT PresentationTRANSCRIPT
September 2003
CRL-UWB ConsortiumSlide 1
doc.: IEEE 802.15-03/#####
Submission
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: [September 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.]
September 2003
CRL-UWB ConsortiumSlide 2
doc.: IEEE 802.15-03/#####
Submission
ULTRA WIDEBAND PRINTED BOW-TIE ANTENNA
Kamya Yekeh Yazdandoost Communications Research Laboratory (CRL)
& CRL-UWB ConsortiumRyuji Kohno
Director, UWB Technology Institute, CRLProfessor, Yokohama National University
Chair, CRL-UWB Consortium
September 2003
CRL-UWB ConsortiumSlide 3
doc.: IEEE 802.15-03/#####
Submission
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
September 2003
CRL-UWB ConsortiumSlide 4
doc.: IEEE 802.15-03/#####
Submission
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.
September 2003
CRL-UWB ConsortiumSlide 5
doc.: IEEE 802.15-03/#####
Submission
Patch AntennaPatch 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
September 2003
CRL-UWB ConsortiumSlide 6
doc.: IEEE 802.15-03/#####
Submission
Printed Bow-Tie Antenna
Substrate
Patch
Patch
Ground Plane
Top-View
Side-view
Feed Point
September 2003
CRL-UWB ConsortiumSlide 7
doc.: IEEE 802.15-03/#####
Submission
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
September 2003
CRL-UWB ConsortiumSlide 8
doc.: IEEE 802.15-03/#####
Submission
UWB Printed Bow-Tie Antenna
Substrate
PatchPatch
Patch Patch
September 2003
CRL-UWB ConsortiumSlide 9
doc.: IEEE 802.15-03/#####
Submission
Wideband Mechanism of Printed Bow-Tie Antenna
L
C
L
C
September 2003
CRL-UWB ConsortiumSlide 10
doc.: IEEE 802.15-03/#####
Submission
ResultsVSWR
VSWR< 3 (3.8 to 10.6GHz)
Mag
nitu
de o
f V
SW
R
Frequency (GHz)
September 2003
CRL-UWB ConsortiumSlide 11
doc.: IEEE 802.15-03/#####
Submission
ResultsS11
Frequency (GHz)
Mag
nitu
de o
f S
catt
erin
g M
atri
x (d
B)
S11< -6 dB (3.8 to 10.6GHz)
September 2003
CRL-UWB ConsortiumSlide 12
doc.: IEEE 802.15-03/#####
Submission
ResultsGain
Frequency (GHz)
Mag
nitu
de o
f G
ain
(dB
i)
Gain > 2 dBi (3 to 10.6GHz)
September 2003
CRL-UWB ConsortiumSlide 13
doc.: IEEE 802.15-03/#####
Submission
Radiation Pattern
Results
Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 3.1 GHz.
(a) (b)
September 2003
CRL-UWB ConsortiumSlide 14
doc.: IEEE 802.15-03/#####
Submission
Radiation Pattern (Cont.)
Results
Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 5.1 GHz.
(a) (b)
September 2003
CRL-UWB ConsortiumSlide 15
doc.: IEEE 802.15-03/#####
Submission
Radiation Pattern (Cont.)
Results
Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 7.1 GHz.
(a) (b)
September 2003
CRL-UWB ConsortiumSlide 16
doc.: IEEE 802.15-03/#####
Submission
Radiation Pattern (Cont.)
Results
Radiation patterns in (a) φ = 0o and (b) φ = 90o for the proposed antenna at 9.1 GHz.
(a) (b)
September 2003
CRL-UWB ConsortiumSlide 17
doc.: IEEE 802.15-03/#####
Submission
Conclusions
Good radiation patterns for wireless devices
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