Design of dual polarized hybrid LTCC antenna for UWB RFID applications

Abstract

In this paper, we present the simulated design of a dual-polarized H-shaped aperture-coupled microstrip antenna for ultra-wideband radio frequency identification (UWB-RFID) applications. The antenna has a compact design (30 × 30 × 6.9 mm3) with a hybrid structure. The feed portion is on a Ferro A6M low-temperature co-fired ceramic (LTCC) substrate, while the square patches are deposited onto Rogers RT-5880 substrate layers. The antenna is designed to operate in the frequency range of 6–8 GHz. The proposed antenna achieves a dual-polarized broadside radiation pattern having a high gain of 7.71 dB. It also achieves a fractional bandwidth of 28.5% and a port isolation of more than −25 dB at the center frequency of 7 GHz.