IEEE Access (Jan 2019)

Quasi-Planar Composite Microstrip Antenna: Symmetrical Flat-Top Radiation With High Gain and Low Cross Polarization

  • Umesh Ankush Pawar,
  • Subhradeep Chakraborty,
  • Tanmoy Sarkar,
  • Abhijyoti Ghosh,
  • L. Lolit Kumar Singh,
  • Sudipta Chattopadhyay

DOI
https://doi.org/10.1109/ACCESS.2019.2918580
Journal volume & issue
Vol. 7
pp. 68917 – 68929

Abstract

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In this paper, a quasi-planar composite microstrip antenna consisting of a single layer rectangular microstrip antenna along with two metallic posts (monopoles) has been studied theoretically and experimentally. The proposed antenna exhibits wide, symmetrical radiation (around 145°) in both principle planes, along with flat-top radiation in the entire bore sight region (72° along with bore sight) with high gain (8.5 dBi) and significantly low cross polarized radiation. More than 26 dB co-cross polarization isolation over an entire broadside direction is obtained. The present structure is very simple and easy to manufacture. The present investigation provides an insightful, visualization-based understanding of concurrent improvement of the radiation characteristics.

Keywords