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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2013-03-30
A Compact Frequency Reconfigurable Unequal U-Slot Antenna with a Wide Tunability Range
By
Zhen Ren,

    Mr. Zhen Ren

    School of Electronic Engineering

    Xidian University

    China

    Homepage

Wen-Tao Li,

    Dr. Wen-Tao Li

    School of Electronic Engineering

    Xidian University

    China

    Homepage

Le Xu,

    Dr. Le Xu

    Xidian University

    China

    Homepage

Xiao-Wei Shi

    Professor Xiao-Wei Shi

    School of Electronics Engineering

    Xidian University

    China

    Homepage

Progress In Electromagnetics Research Letters, Vol. 39, 9-16, 2013
doi:10.2528/PIERL13022508 | Google Scholar

Abstract
A new frequency reconfigurable unequal U-slot antenna is presented in this paper. The U-slot antenna loaded with two lumped variable varactors is capable of 6 different frequencies switching between 2.3 GHz and 3.6 GHz. The small slots in the ground plane are employed for the biasing circuit to minimize the parasitic effects towards the performance of the antenna. It is found that the unequal U-slot fed by an L-shaped feed line can reduce 30% of the size of the conventional U-slot antenna. Moreover, the proposed antenna offers stable radiation characteristics for each operating frequency in the tunable range. The antenna offers a gain of 4.5 dB in average. The designs are verified through both numerical simulations and measurements of an experimental prototype. Details of the antenna designs and measured results are presented and discussed.
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Citation
Zhen Ren, Wen-Tao Li, Le Xu, and Xiao-Wei Shi, "A Compact Frequency Reconfigurable Unequal U-Slot Antenna with a Wide Tunability Range," Progress In Electromagnetics Research Letters, Vol. 39, 9-16, 2013.
doi:10.2528/PIERL13022508
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