A C-band Circular Polarized Antenna with Elliptical Shape for SAR Sensor

Abstract

This manuscript presented, C-band circularly polarized antenna generated by Elliptical shape. The antenna design will be implementing for the SAR sensor system. This shingle microstrip antenna has the main resonant frequency at 5.5GHz. The proposed antenna will be work at the bandwidth 5.4GHz to 5.6GHz. Furthermore, to enhance the bandwidth of the axial ratio a pair of rectangular truncation shapes is implemented. The antenna proposed for the SAR system on a Medium Altitude Long Endurance (MALE) UAV platform. The platform has an altitude of 7200m. Its minimum requirement of gain is 5dBiC. The simulation result shown that its axial ratio obtains 220MHz. The gain at the center frequency reached 6dBiC.