Design of Dual Band Patch Antennas for Cellular Communications by Genetic Algorithm Optimization

  • Authors

    • Jeevani Jayasinghe Department of Electeical and Electronics,Faculty of Engineering, University of Peradeniya, Sri Lanka.
    • Disala Uduwawala Department of Electeical and Electronics,Faculty of Engineering, University of Peradeniya, Sri Lanka.
    • Jaume Anguera Technology and Intellectual Property Rights Department, Fractus Electronics and Communications Department, Universitat Ramon LLull, Barcelona, Spain
    https://doi.org/10.14419/ijet.v1i1.18

    Received date: April 6, 2012

    Accepted date: April 16, 2012

    Published date: April 17, 2012

  • Abstract

    Designing multiband antennas with low volume becomes of practical interest for mobile telecommunications. This paper presents the designs of five small dual band patch antennas for GSM1800 (1710-1880MHz) and Bluetooth (2400-2483.5MHz) applications using a genetic algorithm combined with MoM (Method of Moments). A substrate with dielectric constant 3.2 and height 8mm is used for the first two dual band designs. The height is reduced thanks to the optimization process to 6mm in the third design by inserting a shorting pin to the fragmented patch antenna. The height is further reduced to 4mm in the by inserting two shorting pins. In the final design with three shorting pins, the height is only 3mm. The patch dimensions are similar to that of the conventional rectangular patch for the center frequency of the lowest frequency band but with the advantage of having dual-band operation at the desired bands. Genetic algorithm optimization is used to optimize the patch geometry, feed position and shorting positions. HFSS is used to carry out simulations. The antenna thickness is reduced from 8mm to 3mm by incorporating shorting pins which position is optimized by the genetic algorithm.

    Author Biography

    • Jeevani Jayasinghe, Department of Electeical and Electronics,Faculty of Engineering, University of Peradeniya, Sri Lanka.
      lecturer (Probationary)

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  • How to Cite

    Jayasinghe, J., Uduwawala, D., & Anguera, J. (2012). Design of Dual Band Patch Antennas for Cellular Communications by Genetic Algorithm Optimization. International Journal of Engineering and Technology, 1(1), 26-43. https://doi.org/10.14419/ijet.v1i1.18