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W-shaped enhanced-bandwidth patch antenna for wireless communication

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Abstract

In this paper a novel form of the familiar E-shaped patch antenna is presented. In the presented approach, by using the genetic algorithm (GA) based on fuzzy decision-making, some modifications have been implemented to the incorporated slots which lead to even more enhancement in the antenna bandwidth. The MOM (Method of Moment) is employed for analysis at the frequency band of 1.8GHz–2.6GHz by the optimization parameters of supply locations and slot dimensions. In the implemented fuzzy system, inputs are parameters like population, and outputs are parameters like recombination to produce the next generation. Fuzzy inference system (FIS) is used for the control of GA parameters. The design is also optimized by successive iterations of a computer-aided analysis package and experimental modifications. Prototype antenna, resonating at wireless communication frequencies of 1.88 and 2.37 GHz, has been constructed and experimental results are in relatively good agreement with the analysis. Dimensions of the modified slots for bandwidth enhancement, while maintaining good radiation characteristics, have been determined and the obtained antenna bandwidth of 36.7% is larger than that of a corresponding unslotted rectangular microstrip antenna or a conventional E-Shaped patch antenna. Details of the antenna design approach and experimental results are presented and discussed.

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Authors and Affiliations

  1. Islamic Azad University, Shahr_e_Rey Branch, Persian Gulf Highway, P.O. Box 18735-334, Tehran, Iran

    Abbas Ali Lotfi Neyestanak

  2. Iran University of Science and Technology, Farjam Street, Narmak, Tehran, Iran

    Farrokh Hojjat Kashani

  3. Electrical Engineering Department, Sharif University of Technology, Azadi Avenue, 11365-9363, Tehran, Iran

    Kasra Barkeshli

Authors
  1. Abbas Ali Lotfi Neyestanak
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  2. Farrokh Hojjat Kashani
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  3. Kasra Barkeshli
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Correspondence to Abbas Ali Lotfi Neyestanak.

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Lotfi Neyestanak, A.A., Hojjat Kashani, F. & Barkeshli, K. W-shaped enhanced-bandwidth patch antenna for wireless communication. Wireless Pers Commun 43, 1257–1265 (2007). https://doi.org/10.1007/s11277-007-9299-7

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  • DOI: https://doi.org/10.1007/s11277-007-9299-7

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