A Compact Wideband Circular Polarized Antenna for Automotive GNSS Applications

This paper presents a new wideband right-hand circular polarized antenna with a homogenous high Gain (4 dBiC) and a good-cross polar discrimination (XPD) over a bandwidth of 85 MHz. The proposed antenna is optimized for the L1-Band of the global navigation satellite service. The return loss between 1.525 GHz and 1.61 GHz is lower than −15 dB without the need of any matching circuit. The compact antenna structure is made of panel and can be fabricated easily by an industrial punch bending process.