A wideband low‐profile dual‐polarized wide beam‐width antenna

Abstract

A wideband and wide beam-width dual-polarization with a low-profile and simple structure is presented in this letter. The proposed antenna comprises two pairs of bending plates, the feed part that includes the probe and the copper disk, and two series of feeding networks. A couple of the bending plates can be used to form the horizontal and vertical currents to broaden the antenna's beam width. To radiate a symmetrical wide beam pattern, a series feeding network is applied to guarantee a symmetrical current distribution on the bending plates. Therefore, the proposed wide beam capability has been analyzed and verified with a dual-polarization antenna. A low-profile dual-polarization antenna is demonstrated, which can realize the half-power beam-width more than 180° and 100° in the E- and H-plane in the whole operating frequency band (22.3%), respectively. Furthermore, the port isolation is lower than −35 dB in the most frequency band. The prototype is fabricated and characterized, yielding good performance within the overall operational bandwidth. The measured results align very well with the simulated results. The proposed wideband antenna is a promising candidate for wireless communication systems because of the dual-polarization and wide beam-width.