IEEE 802.15 <subject>

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Project IEEE P802.15 Working Group for Wireless
Personal Area Networks (WPANs) Submission Title
Hitachi Cable Film Type Wideband Antenna for
UWB Communication Date Submitted 03 March,
2004 Source Hisashi Tate,
E-Mailtate.hisashi_at_hitachi-cable.co.jp,
Keisuke Fukuchi, E-Mailfukuchi.kei
suke_at_hitachi-cable.co.jp
Tomoyuki Ogawa, E-Mail ogawa.tomoyuki_at_hitachi-
cable.co.jp Morihiko
Ikegaya, E-Mail ikegaya.morihiko_at_hitachi-cable.
co.jp Company Hitachi Cable,
Ltd., Address 880 Isagosawa, Hitachi, Ibaraki,
3191418 Japan
Voice81-294-42-5021, FAX [phone]
Ken Takei , E-Mail
takei_at_crl.hitachi.co.jp, Company Hitachi,
Ltd. Address 1-280
Higashi-koigakubo Kokubunji-shi, Tokyo 1858601,
Japan Voice81-42-323-1111,
FAX[phone] Re Abstract Small
High Gain Antenna for UWB with Omni-directional P
urpose 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.
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Film Type Wideband Antenna for UWB Communication

• Hitachi Cable, Ltd.
• H. Tate,
• M. Ikegaya, T. Ogawa, K. Fukuchi
• Hitachi, Ltd.
• K. Takei

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Contents

• Introduction
• Wireless LAN Antenna for Laptop PC
• Simulation Technology of Multi Band Antenna
• Development of UWB Antenna
• Basic Design of UWB Antenna
• Measurement Results
• Conclusion Next Step

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W-LAN Antenna for Laptop PC
Introduction
LAN
Bluetooth
- Suitable for IEEE802.11a/b/g and Bluetooth -
Thin Structure (30mm x 30mm x 0.2mm) - High Gain
Omni-directional - Self Ground Plane
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Return Loss VSWR
Introduction
Return Loss
VSWR
- Micro Coaxial Cable OD 1.13mm, L500mm-
Time Domain (Gating)
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Average Gain (Horizontal Plane)
Introduction
2GHz Band
5GHz Band
- Micro Coaxial Cable OD 1.13mm, L500mm
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Simulation Technology of Antenna
Introduction
Open Stub
Short Stub
Single Band Antenna
Simulation TechnologyUsing Equivalent Circuit
Radiator Design
Dual Band Antenna
- Capability for Multi Band - Short
developing term - Easy Customizing
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Target of UWB Antenna

• Bandwidth 3GHz 6GHz as first generation.-gt
  VSWR lt 2.0
• High average gain 0dBi (include cable
  connector loss)
• Omni-directional
• Self-Ground Plane
• Low Cost Ready for Mass production

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Basic Design of UWB Antenna
Image of VSWR
Using Triple Band Technology to cover 3GHz to 6GHz
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Return Loss VSWR
Measurement Result
Return Loss Property
VSWR
Normalized Bandwidth 67 (3GHz/4.5GHz)
- Micro Coaxial Cable OD 1.13mm, L180mm-
Time Domain (Gating)
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Measurement System of Antenna Properties
Chamber
Horn Antenna
Sample(Free Space)
Network Analyzer
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Radiation Pattern at 4.5GHz
Measurement Result
Measurement atHorizontal Plane
- Micro Coaxial Cable OD 1.13mm, L180mm
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Average Gain (Horizontal Plane)
Measurement Result
- Micro Coaxial Cable OD 1.13mm, L180mm
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Group Delay
Measurement Result
- Micro Coaxial Cable OD 1.13mm, L180mm
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Conclusion Next Step

• Conclusion
• Our new antenna covered from 3GHz to 6GHz.
• Average gain was around 0dBi.(Coaxial Cable
  OD1.13mm, L180mm)
• Omni-directional Self Ground Plane
• Group Delay was 1.2ns within this region
• Next Step
• Measurement of the Performanceusing real UWB
  System.
• Increasing the Band Width up to 10GHz.