Ultra-High Frequency Dual-Polarized Microstrip Patch Antennas for TV White Space Applications

The increasing demand for wireless communication highlights the relevance of ultra-high frequency (UHF) systems, particularly for TV white space (TVWS) applications. However, existing designs struggle to simultaneously achieve compact size, dual-band operation, and high-isolation Multiple-Input Multiple-Output (MIMO) performance. This work proposes two dual-polarized microstrip patch antennas (DP-MPAs) operating at 560 MHz and 680 MHz, enabling a 2x2 MIMO configuration via orthogonal polarization. Full-wave simulations show reflection coefficients below -10 dB, bandwidths exceeding 24 MHz, and isolation better than -20 dB, with 2 dBi realized gain. The design offers an efficient and compact solution for UHF MIMO TVWS systems.