Dual Linearly Polarized Broadband Microstrip Patch Antenna for GNSS Reflectometry

In this paper, the design and development of dual linearly polarized stacked patch antenna for GNSS Reflectometry (GNSS-R) application is presented. The stacked microstrip patch antenna with proximity coupled feed configuration is used in this design. This type of antenna can be used as a nadir looking antenna in the receiver of GNSS Reflectometry. The antenna has been developed and measured. The antenna is having measured 10 dB return loss bandwidth of 118 MHz (7.5%) and peak gain of 8 dBi at center frequency 1.575 GHz for both linear polarization. The antenna is also analyzed with the Zenith looking antenna and mutual coupling between these two antennas is better than 50 dB. This antenna is used for GNSS Reflectometry application.