Dual-Polarized Complementary Structure Antenna Based on Babinet's Principle

Abstract

Abstract-Based on the theory of Babinet's principle, a type of dual-polarized antenna working on C band is designed using complementary structures. The structures comprise a wire loop antenna and a slot loop antenna, which is complemented and fed by coaxial lines. A ground is placed to improve the front-to-back ratio of the antenna. The performance of the antenna is hereinafter studied experimentally, followed by the implementation of a prototype antenna. Its stable and symmetric radiation patterns are obtained within the frequency of 4.9 GHz∼5.1 GHz, and the port isolation is less than −24 dB. The measured results coincide with the simulated ones. This explains the feasibility of the proposed dual-polarized antenna.

A Broadband ±45° Dual-Polarized Magneto-Electric Dipole Antenna for 2g/3g/Lte/5g/Wimax Applications

“…What's more, its gain and beamwidth are not noticeably changed within its bandwidth. Then, several types of magneto-electric dipole antennas have been reported [4][5][6][7]. As a basic element, the magnetoelectric dipole antenna was employed in a dual-polarization antenna [8][9][10][11][12][13][14].…”

A Broadband Dual-Polarized Magneto-Electric Dipole Antenna for 2g/3g/Lte/Wimax Applications

“…Patch antenna is a good choice for base station antennas, due to its attractive features such as light weight, low costs, and easy fabrication for dual-polarization implementation. The patch antenna type has already been studied a lot [2][3][4][5][6][7], but wide impedance bandwidth is very difficult to be achieved with these antennas.…”