Compact Circular Polarized Stacked Patch Antenna for IRNSS and GLONASS Applications

Abstract

A single feed stacked circular polarized patch antenna for IRNSS and GLONASS applications is presented in this paper. The antenna is capable of generating right hand circular polarization with a single feed for the IRNSS operating frequencies of 1.176GHz and 2.492GHz along with the GLONASS operating frequency of 1.6GHz. Stacked patch concept has been considered to maintain the compactness of the antenna. Proposed design consists of three radiating patches and each patch radiate for a specific frequency. To achieve the capability of circular polarization all the three patches are truncated diagonally at the corners. Excitation to this stacked patch antenna is provided using a coax feed. Finite Element Method based Ansys HFSS software has been used to study the various antenna parameters. The proposed design is capable to receive the signals simultaneously from all the satellites of IRNSS and GLONASS.