Transcript Mar 2003 doc.: IEEE 802.15-03/145r0 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS) Submission Title: [TRDA/TaiyoYuden – Antenna for UWB.

Mar 2003
doc.: IEEE 802.15-03/145r0
Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANS)
Submission Title: [TRDA/TaiyoYuden – Antenna for UWB System]
Date Submitted: [March 2003]
Revised: [03 March 2003]
Source: [Hironori Okado] Company [Taiyo Yuden Co.,Ltd.] Address [8-1 Sakaecho Takasaki-shi
Gunma 370-8522 Japan] Voice [+81-27-324-2311] Fax[+81-27-324-2326] E-mail
[[email protected]] [Masa Horie, Mick Aoki] Company [TRDA Inc.] Address [10180 Telesis
Court Suite120, San Diego, CA 92121] Voice [(858)554-0755] Fax [(858)455-7578] E-mail
[[email protected], [email protected]]
Re: []
Abstract: [This presentation is Introduction to small ceramic antenna for UWB system.]
Purpose: [Tutorial Contribution]
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
Submission
Slide 1
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Antenna for Ultra Wideband System
Hironori Okado
([email protected])
Mick Aoki
([email protected])
Masa Horie
([email protected])
Taiyo Yuden Co., Ltd.
TRDA Inc.
Submission
Slide 2
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Overview
•
•
•
•
•
•
Submission
Common Antenna Measurement
TY’s Definition for UWB Antenna Measurement
TY’s UWB Antenna
TY’s Challenge for UWB Antenna
Measured Data
Conclusion
Slide 3
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Topic
 Common Antenna Measurement
•
•
•
•
•
Submission
TY’s Definition for UWB Antenna Measurement
TY’s UWB Antenna
TY’s Challenge for UWB Antenna
Measured Data
Conclusion
Slide 4
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Common Antenna Measurement
VSWR(Voltage Standing Wave Ratio)
Measure the S11
VSWR=1
50ohm
UWB Antenna
Submission
Network Analyzer
Slide 5
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Gain & Radiation Pattern
Anechoic chamber
Standard antenna
TX antenna
TX antenna
UWB antenna
e.g. Standard horn antenna
e.g. Double ridge horn antenna
Double ridge horn antenna
Prs(dBm)
Pt(dBm)
Gs(dBi)
Prt(dBm)
e.g. Double ridge horn antenna
Pt(dBm)
Gt(dBi)
Rotation F
Prs: Standard Antenna
Received Power
Gs: Standard Antenna
Gain
Prt: UWB Antenna
Received Power
Gt: UWB Antenna
Gain
1. Rotate UWB Antenna
2. Plot Gt
Radiation Pattern
F=0deg
F=270deg
Gain Gt=Prt-Prs+Gs
Submission
Slide 6
Gain（dBi）
F=90deg
F=180deg
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Topic
• Common Antenna Measurement
TY’s Definition for UWB Antenna Measurement
•
•
•
•
TY’s UWB Antenna
TY’s Challenge for UWB Antenna
Measured Data
Conclusion
Submission
Slide 7
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
TY’s Definition for UWB Antenna Measurement
Mobile device – no orientation
Assumption: Ideal Radiation Pattern is OMNI Directional (Isotropic Radiation)
-a (dB)
0dBi
1
+a (dB)
How to increase gain?
Isotropic
radiation
Total radiation energy
１ for total polarization radiation
１
+a(dB)  Specific Direction Becomes Big
Theoretical limit at zero-loss condition
-a(dB)  Other Direction Becomes Weak
Ideal Characteristic of Omni Direction is SPHERE
Submission
Slide 8
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
TY Definition for UWB Antenna Performance Measurement
(cont.)
Actual Measurement:
Plane – 3 (XZ, YZ, XY)
Polarization – 2 (Vertical, Horizontal)
How to Calculate GAIN?
Method #1: {(YZ(V) + YZ(H)) + (XZ(V) + XZ(H)) + (XY(V) + XY(H))}/3
Looks higher gain than the actual.
Method #2: {(YZ(V) + YZ(H))/2 + (XZ(V) + XZ(H))/2 + (XY(V) + XY(H))/2 } /3
In the real world both V & H don’t always come to the antenna
Take Method #2
Submission
Slide 9
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Topic
• Common Antenna Measurement
• TY’s Definition for UWB Antenna Measurement
TY’s UWB Antenna
• TY’s Challenge for UWB Antenna
• Measured Data
• Conclusion
Submission
Slide 10
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
TY UWB Antenna
Smaller Size
Target Application:
• PC Card
• miniPCI
• Compact Flash Card
• Memory Card
Ceramic Technology
High Dielectric Constant Material
Smaller, Lower-Profile
Antenna Size: 10 x 8 mm
Submission
Slide 11
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Topic
• Common Antenna Measurement
• TY’s Definition for UWB Antenna Measurement
• TY’s UWB Antenna
TY’s Challenge for UWB Antenna
• Measured Data
• Conclusion
Submission
Slide 12
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
UWB Antenna Design Challenge
Doesn’t Work !!
Adding Multi Resonance Curve
How to Design
UWB Antenna?
Need Antenna Design with Continuity in Ultra Wide Band
VSWR
Miniaturization
Average Gain
Phase (Group Delay)
Element Design Technology.
Compensate Impedance Matching
in case of Built–in Antenna
Submission
Slide 13
TY’s
Technology
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Topic
•
•
•
•
Common Antenna Measurement
TY’s Definition for UWB Antenna Measurement
TY’s UWB Antenna
TY’s Challenge for UWB Antenna
Measured Data
• Conclusion
Submission
Slide 14
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Measured Data
VSWR
VSWR
7
6
5
VSWR=2.2 Max (3 to 11GHz)
4
3
2
1
2
3
4
5
6
7
8
9
10
11
12
Frequency (GHz)
Submission
Slide 15
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Radiation Pattern
Unit : dBi
3GHz
5GHz
7GHz
XY
YZ
XZ
Submission
Slide 16
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Antenna Gain
Total Average Gain = ( (YZ(V) + YZ(H))/2 + (XZ(V) + XZ(H))/2 + (XY(V) + XY(H))/2 ) /3
(Method #2)
Unit: dBi
Plane
Polarization
V
H
V
XZ
H
V
XY
H
Total Average
YZ
3
-0.8
-8.7
-2.2
-4.3
-15.7
-1.9
-3.6
4
-0.4
-4.5
-3.5
-5.2
-16.0
-1.7
-3.4
5
-4.0
-5.3
-6.0
-5.3
-17.6
-2.9
-5.3
6
-5.6
-0.7
-2.6
-5.8
-15.3
-2.5
-3.8
frequency(GHz)
7
-8.8
0.0
-0.6
-8.5
-16.7
-3.6
-3.6
8
-6.4
-2.2
-4.4
-5.4
-17.0
-1.8
-4.4
9
-4.7
-4.0
-4.2
-9.7
-15.7
-1.6
-4.9
10
-7.7
-2.6
-1.7
-11.8
-16.0
-1.6
-4.4
11
-10.1
-2.4
-0.7
-12.6
-15.2
-1.8
-4.2
(Showed average value in 1 round of each direction angle.)
Submission
Slide 17
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Group Delay
Group Delay[nsec]
7
6
5
4
3
2
1
2
4
6
8
10
12
Frequency[GHz]
Submission
Slide 18
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Antenna Evaluation with UWB Source
Configuration for Multi Band UWB Testing
TY UWB Antenna
Double Ridge Horn Antenna
5 feet
Spectrum Analyzer
Coaxial Cable
Multi Band UWB System
Oscilloscope
Measured: General Atomics
Submission
Slide 19
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Configuration for Single Band UWB Testing
TY UWB Antenna
or
Double Ridge Horn Antenna
TY UWB Antenna
3 feet
Spectrum Analyzer
Impulse Generator
Coaxial Cable
Oscilloscope
Measured: General Atomics
Submission
Slide 20
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Multi Band UWB Source: Frequency Domain
Transmit Signal
Center 4.5GHz Span 3GHz
10dB/Div
Coaxial Cable
Receive Signal
Center 4.5GHz Span 3GHz
10dB/Div
TY UWB Antenna (TX) with
Double Ridge Horn Antenna (RX)
Measured: General Atomics
Submission
Slide 21
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Multi Band UWB Source: Time Domain
Transmit Signal
2.5ns/Div 50mV/Div
Coaxial Cable
Receive Signal
2.5ns/Div 50mV/Div
TY UWB Antenna (TX) with
Double Ridge Horn Antenna (RX)
The Antenna Characteristics Should Satisfy Multi-Band Systems.
Measured: General Atomics
Submission
Slide 22
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Single Band UWB Source: Time domain
Transmit Signal
500ps/Div 10mV/Div
Coaxial Cable
Receive Signal
1ns/Div 200mV/Div
UWB Antenna (RX) with
Double Ridge Horn Antenna (TX)
Measured: General Atomics
Submission
Slide 23
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Single Band UWB Source: Time Domain
Transmit Signal
500ps/Div 10mV/Div
Coaxial Cable
Receive Signal
500ps/Div 10mV/Div
TY UWB Antenna (RX and TX)
More Work is Required on Single Band System.
Preliminary Results are Extremely Positive.
Measured: General Atomics
Submission
Slide 24
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Test Results
Antenna Gain with Multi Band
UWB Source
Frequency (GHz)
Antenna Gain (dBi)
3.5
0.8
4.0
1.7
4.5
1.7
5.0
2.6
5.5
1.4
Submission
Slide 25
Measured Direction
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Presentation Summary
•
•
•
•
•
Common Antenna Measurement
TY’s Definition for UWB Antenna Measurement
TY’s UWB Antenna
TY’s Challenge for UWB Antenna
Measured Data
Conclusion
Submission
Slide 26
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Conclusion
• Made Prototype of Small Ceramic Antenna for UWB Sources
• Measured Performance of Ceramic UWB Antenna
• Satisfied Multi-Band Systems with Antenna Characteristics
• Requires More Work on Single-Band Systems: Extremely Positive
Preliminary Results
Submission
Slide 27
Masa Horie, TRDA/Taiyo Yuden
Mar 2003
doc.: IEEE 802.15-03/145r0
Conclusion (cont.)
• Recommend Mobile Device Antenna Requirements for 15.3a
Specifications:
 Ideal Radiation Pattern of Antenna for Mobile Devices
is OMNI Directional & SPHERICAL Shape
 SPHERICAL Radiation Maximum Gain is 0dBi
 Total Average Gain is Calculated with:
( (YZ(V) + YZ(H))/2 + (XZ(V) + XZ(H))/2 + (XY(V) + XY(H))/2 ) /3
Submission
Slide 28
Masa Horie, TRDA/Taiyo Yuden