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Parametric analysis of a band-rejection antenna for UWB application

✍ Scribed by Jaehoon Choi; Kyungho Chung; Yangwoon Roh

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
147 KB
Volume
47
Category
Article
ISSN
0895-2477

No coin nor oath required. For personal study only.

✦ Synopsis

A compact and wideband microstrip-fed printed monopole antenna with the band-rejection characteristic is proposed. By adding a bent stub on the radiating patch and stepping the ground plane, the antenna provides an enhanced impedance-matching characteristic over the desired frequency band. The band-rejection characteristic is achieved by inserting an inverted-U shaped slot on the circular patch. The range of the rejection band can be adjusted by modifying the length and width of the inserted slot. The measured impedance bandwidth of the proposed antenna ranges from 2.9 to 12.1 GHz for VSWR Ͻ 2, excluding the rejection band. This antenna shows an omnidirectional radiation pattern similar to that of a monopole antenna. The measured maximum-gain variation is less than 4 dB over the operating-frequency band.

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