Compact band-notched ultra-wideband antenna using defected ground structure

A compact printed monopole ultra‐wideband (UWB) antenna with the band‐notched function is proposed. The antenna consists of a fan‐shaped metal patch and a trapeziform ground with a 50 Ω tapered coplanar waveguide (CPW) transmission line. By simply adjusting the length of the U‐shaped defected ground...

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Bibliographic Details
Published in:Microwave and optical technology letters 2010-02, Vol.52 (2), p.286-289
Main Authors: Li, Li-Xian, Zhong, Shun-Shi, Chen, Min-Hua
Format: Article
Language:English
Subjects:
Antennas
band-notched
Banded structure
coplanar waveguide (CPW)
Coplanar waveguides
Filtering
Ground plane
Grounds
Microwaves
U-shaped DGS
ultra-wideband (UWB) antenna
Wireless communication
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Summary:A compact printed monopole ultra‐wideband (UWB) antenna with the band‐notched function is proposed. The antenna consists of a fan‐shaped metal patch and a trapeziform ground with a 50 Ω tapered coplanar waveguide (CPW) transmission line. By simply adjusting the length of the U‐shaped defected ground structure (DGS) in the ground plane, the band‐rejected filtering properties for the WLAN band is achieved. The proposed antenna is successfully simulated, designed, and measured, which shows an ultra‐wide matched impedance band from 3 to 15 GHz for VSWR ≤2 with a stop‐band of 5–6 GHz. The stable radiation patterns are also obtained. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 286–289, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24946
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.24946