volume | PIER Journals

2010-07-09

A Compact CPW-Fed Monopole Antenna with a U-Shaped Strip and a Pair of L-Slits Ground for WLAN and WiMAX Applications

Zhen-Yang Liu,

Dr. Zhen-Yang Liu

Xidian University

China

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Ying-Zeng Yin,

Professor Ying-Zeng Yin

Xidian University

China

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Shu-Feng Zheng,

Dr. Shu-Feng Zheng

Xidian University

China

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Wei Hu,

Dr. Wei Hu

Xidian University

China

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Le-Hu Wen,

Dr. Le-Hu Wen

Xidian University

China

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Qi Zou

Dr. Qi Zou

Tianjin Electric Power Corporation Technical Center

China

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Progress In Electromagnetics Research Letters, Vol. 16, 11-19, 2010

doi:10.2528/PIERL10052706

Abstract

A compact tri-band planar monopole antenna suitable for 2.4/5.2/5.8 GHz WLAN and 3.5 GHz WiMAX is presented. The antenna employs a U-shaped parasitic strip and a defect ground-plane structure. By inserting a U-shaped strip as a parasitic strip into a normal monopole which operates at lower band of the WLAN, one more resonance at the higher WLAN band comes out. A defect ground-plane composed of two symmetrical L-shaped slits leads to another resonance operating at WiMAX band. The proposed antenna has a compact size of 22×41×0.8 mm³ and offers good radiation and reflection characteristics in the above frequency bands. The measured VSWR exhibits a good agreement with the simulated one. Detailed design steps, parametric studies and experimental results for the antenna are investigated in this paper.

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Zhen-Yang Liu, Ying-Zeng Yin, Shu-Feng Zheng, Wei Hu, Le-Hu Wen, and Qi Zou, "A Compact CPW-Fed Monopole Antenna with a U-Shaped Strip and a Pair of L-Slits Ground for WLAN and WiMAX Applications," Progress In Electromagnetics Research Letters, Vol. 16, 11-19, 2010.
doi:10.2528/PIERL10052706

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