A STATE OF THE ART SURVEY ON WIDEBAND CIRCULARLY POLARIZED MICROSTRIP ANTENNA (CPMA)

Abstract

This paper provides a description of the circularly polarized microstrip patch antenna (CPMA) and the use of circular polarization and cavity to enhance the basic characteristics of the antenna. The use of circularly polarized antennas is an efficient solution to achieve polarization matching between transmitting and receiving antennas. The use of cavities in this antenna helps to suppress surface waves and increase the antenna's bandwidth. To improve the desired level of performance parameters such as resonance frequency, gain, directivity, radiation efficiency, and antenna efficiency for the dual resonance, there are many techniques for designing circularly polarized microstrip antennas. Circularly polarized microstrip antennas, literature review, simulation tools, benefits and drawbacks over traditional microwave antennas and applications are listed in this letter. The comparative analysis of several circularly polarized methods of microstrip antenna design used by researchers is also discussed in this letter.