Design of Circularly Polarized Microstrip Antenna with slotted Split ring array for Video Surveillance Applications at C-Band

Abstract

: It has been observed that the circularly polarized antenna always play an important role in modern wireless communication applications. One of such applications is Video surveillance system. Such system interfaced with circularly polarized antenna during natural calamities, which plays a crucial and important role in rescuing the survivors. The weather conditions make it hard to achieve effective communication between the surveillance equipment and the controller. The applications of rescuing vehicle/boat movement during flood-affected areas required an uninterrupted wireless connectivity, for which polarized antennas are very much required. The present paper investigates this problem by designing an efficient circularly polarised antenna on metasurface material consisting of split ring resonator. The designed antenna is designed to operate in the frequency range of 7.1-7.23 GHz. FR4 glass epoxy material is used as an antenna substrate with dielectric constant 4 and thickness of 1.6mm. An array of split ring resonators etched microstrip antenna was fabricated on FR4 glass epoxy substrate. The result obtained with such a microwave antenna produces an excellent gain of 7.4 dB and return loss of 17.7dB with a bandwidth of 1.2 GHz. Future studies are still in progress.