A low‐profile wideband dual‐polarization patch antenna with antisymmetric feeding network

Abstract

In this paper, a novel broadband dual‐polarization patch antenna is proposed. Antisymmetric Γ feeding network is applied to excite the radiating patch etched on the upper side of the horizontal substrate, which could minimize the undesired radiation from the probe and extend the impedance bandwidth. For verifying the proposed approach, a prototype is fabricated and measured, the simulated and measured results show the antenna has a wide impedance bandwidth of 48% (1.66‐2.71 GHz) for S11 < −10 dB, as well as stable radiation gain around 9.5 dBi with low cross‐polarization. In addition, the total height of the antenna is only 0.17 λ0 ( λ0is the free space wavelength of central frequency) and high port‐to‐port isolation is better than 30 dB. The characteristics of the proposed antenna illustrate it can be an indication for a micro base station in the mobile communication system.

Broadband dual‐polarized crossed‐dipole antenna with tapered integrated balun for base‐station applications

“…Dual‐polarized antennas, especially ±45° dual‐polarized antennas, have been widely employed for base station used 1‐16 . In addition, with the development of mobile communication, there are a wide variety of mobile communication systems coexisting in a single base station.…”

“…Dual-polarized antennas, especially ±45 dual-polarized antennas, have been widely employed for base station used. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16] In addition, with the development of mobile communication, there are a wide variety of mobile communication systems coexisting in a single base station. To support multiple communication systems and improve the utilization of spectrum resource, broadband basestation antennas are in urgent need.…”

A single‐ended differentially fed filtering patch antenna for base station application

“…In order to improve polarization purity and obtain good isolation, a lot of differentially fed base station antennas have been studied 3‐5 . Compared with the cross‐dipole antennas, 6‐8 patch antennas have many advantages, such as smaller size, lighter weight, and lower cost 9‐11 . The technology of differentially‐fed has not only applied to dipole antennas, but also widely used for patch antennas.…”