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Design, development and microwave inter-comparison of dual slot antenna configurations for localized hepatic tumor management

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Abstract

Slot antennas are generally preferred for localized liver cancer treatment modalities due to desired radiation characteristics. An iterative thermal/microwave numerical routine is used to analyze regular and miniature slot antenna configurations at 5.8 GHz. A thermal/microwave solver determines the specific absorption rate to malignant tissues as a pre- processing step to compute microwave solution in terms of propagation wave number, return loss and insertion loss. The regular and miniature dual slots antenna geometries were then developed to estimate the return loss characteristics against antennas slot lengths at a constant frequency of 5.8 GHz. Results reveal that the regular geometry has return loss less than −5 dB as compared to <−25 dB return loss for miniature slot antenna configuration. Furthermore, 5.8 GHz antenna geometry provides physical size reduction up to 50 %, lower fabrication cost and is a better minimally invasive choice due to further packed thermal ablation spots.

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Authors and Affiliations

  1. Department of Electrical Engineering, Government College University, Katchery Road, Lahore, Pakistan

    J. Zafar

  2. Department of Economics, Government College University, Lahore, Pakistan

    T. Zafar

  3. Tissue Optics and Microcirculation Imaging Research Group, National University of Ireland, Galway, Ireland

    H. Zafar

  4. Department of Cardiology, University Hospital Galway, Galway, Ireland

    F. Sharif

  5. Regenerative Medicine Institute, National University of Ireland, Galway, Ireland

    F. Sharif

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  1. J. Zafar
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  2. T. Zafar
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  3. H. Zafar
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  4. F. Sharif
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Correspondence to J. Zafar.

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Zafar, J., Zafar, T., Zafar, H. et al. Design, development and microwave inter-comparison of dual slot antenna configurations for localized hepatic tumor management. Australas Phys Eng Sci Med 38, 593–601 (2015). https://doi.org/10.1007/s13246-015-0384-z

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  • DOI: https://doi.org/10.1007/s13246-015-0384-z

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