TY - JOUR A2 - Li, Wenxing AU - Liu, Yuan-zhu AU - Xiao, Shao-qiu AU - Wang, Bing-zhong PY - 2014 DA - 2014/05/18 TI - A RHCP Microstrip Antenna with Ultrawide Beamwidth for UHF Band Application SP - 472397 VL - 2014 AB - A novel right-hand circularly polarized (RHCP) UHF microstrip antenna with 3 dB beamwidth of more than 150° is presented in this paper. The 3 dB RHCP beamwidth can be broadened by utilizing a combined ground structure with a hollow truncated cone ground plane and a metallic rectangular plate. Optimizing the half-angle θc of cone and the cone height hcone, a 3 dB RHCP beamwidth of more than 200° can be acquired, which is about 120° greater than its corresponding regular RHCP microstrip antenna. There is a good agreement between the measured results and simulated results for the proposed antenna operating in UHF band. SN - 1687-5869 UR - https://doi.org/10.1155/2014/472397 DO - 10.1155/2014/472397 JF - International Journal of Antennas and Propagation PB - Hindawi Publishing Corporation KW - ER -