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Analysis and design of broadband U-slot cut rectangular microstrip antennas

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Abstract

Broadband microstrip antenna using variations of U-slot has been widely reported. However, in most of the reported work, an in-depth explanation about the mode introduced by U-slot and procedure to design U-slot cut antennas at any given frequency is not explained. In this paper, first an extensive analysis to study the broadband response in symmetrical and a new configuration of asymmetrical U-slot cut rectangular microstrip antennas is presented. The U-slot tunes higher-order orthogonal mode resonance frequency of the patch with respect to fundamental mode to realise wider bandwidth. Further formulation in resonant length at modified patch modes in symmetrical U-slot cut antenna is proposed. Frequencies calculated using these formulations show closer agreement with simulated and measured results. Using proposed formulations, a procedure to design U-slot cut antenna at different frequencies over 800–4000 MHz range which shows broadband response is explained. Thus, the proposed work gives an insight into the functioning of widely used U-slot cut antennas and the formulations will be helpful for designing at any given frequency.

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Authors and Affiliations

  1. Electronics and Telecommunication Engineering, Dwarkadas J Sanghvi College of Engineering, Mumbai, 400056, India

    AMIT A DESHMUKH

  2. Department of Electronics Engineering, Defence Institute of Advanced Technology, Pune, 411025, India

    K P RAY

Authors
  1. AMIT A DESHMUKH
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  2. K P RAY
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Correspondence to AMIT A DESHMUKH.

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DESHMUKH, A.A., RAY, K.P. Analysis and design of broadband U-slot cut rectangular microstrip antennas. Sādhanā 42, 1671–1684 (2017). https://doi.org/10.1007/s12046-017-0699-4

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  • DOI: https://doi.org/10.1007/s12046-017-0699-4

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