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A shared aperture microstrip antenna for S/C-band communications

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Abstract

Systematic design approach for a shared aperture dual band microstrip antenna, its realization and successful demonstration have been described in this manuscript. This shared aperture microstrip antenna operates at S- and C-bands with higher feature and is linearly polarized (LP) in each of the bands. The S-band element is a two-layer electromagnetically coupled (EMCP) cross shaped patch. The cross shaped patch on the lower substrate is equitably fenced with 4 square patches for C-band operation. With the aid of an appropriate external microstrip comparator the C-band patches are excited for amplitude comparison monopulse tracking operation. The antenna demonstrates dual-axis monopulse tracking at C-band, which is its superiority over the earlier reported developments. At the C-band, it shows an impedance bandwidth ≥ 3.7% with a gain of 11.3 dBi. The monopulse tracking is successfully achieved over a bandwidth of ≈ 3.5%. It can track object unambiguously over ± 23° of the antenna boresight. The inclusion of tracking feature at C-band, with 3.5% tracking bandwidth with C-band elements in a single layer microstrip design and ability of error free tracking within ± 23° of the boresight are the novelty of the present development. The antenna reveals ≥ 1.9% impedance bandwidth at S-band with a gain of about 6.2 dBi.

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Authors and Affiliations

  1. SAMEER, MeitY, Government of India, Kolkata, 700091, India

    Satyajit Chakrabarti & Gourab Barman

  2. TCS, Kolkata, 700156, India

    Ekendra Nath Das

Authors
  1. Satyajit Chakrabarti
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  2. Ekendra Nath Das
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  3. Gourab Barman
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Correspondence to Satyajit Chakrabarti.

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Chakrabarti, S., Das, E.N. & Barman, G. A shared aperture microstrip antenna for S/C-band communications. Int J Syst Assur Eng Manag 14 (Suppl 2), 595–602 (2023). https://doi.org/10.1007/s13198-021-01257-x

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  • DOI: https://doi.org/10.1007/s13198-021-01257-x

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