Optically Transparent MIMO Antenna with Polarization Diversity

Abstract

An Optically transparent UWB antenna with polarization diversity for the use of automotive communications is presented in this paper. The novel two element antenna operates at the frequency range of 2.5-8 GHz with dimension 45×45 mm2 and peak gain 1.2 dBi. Antenna elements are placed orthogonally to achieve polarisation diversity. The proposed antenna is placed on a soda lime glass substrate which has a permittivity of 7.3 and thickness of 2.2 mm. The radiator of the antenna is made of FTO with sheet resistance 6 Ω/sq. The Diversity gain of the proposed antenna is greater than 9.9 and ECC value is lesser than 0.02 for the frequency range of 3-8 GHz. The isolation between the antenna elements is more than 15 dB without any complex decoupling structures between them.