Design of miniaturized D‐band dual‐polarized dipole base station antenna based on coupling feeding

Abstract

This article designs a coupling feeding miniaturized base station antenna. This base station antenna works in D‐band (2500‐2700 MHz). By introducing a bending structure to increase the current path of the dipole, the overall size of the dipole antenna can be reduced. The final design of antenna element size is only 36.8 × 36.8 mm2 (0.32 × 0.32λ2). The simulation results show that the return loss of the two ports is greater than 23 dB, the isolation between the two ports is greater than 29 dB, the half‐power beamwidth of the antenna is 63° ± 1.5°, and the gain is greater than 9 dBi. The physical processing and simulation results are basically consistent, which prove the practicability of the dipole antenna. A broadband dipole antenna and this antenna are selected for array analysis. When it works in D‐band, the isolation of the antenna element designed in this article is better than that of the broadband dipole antenna.

A lower profile base station antenna: With dual‐polarization and dual‐band for sub‐6 GHz application

“…Compared to slot and patch structure, the dipole with broadband and stable radiation properties makes it developed in base station antennas. [1][2][3][4][5] Recent years, there are still many researches on the dual-polarized dipole antenna, and most of them are expanding toward broadband. [6][7][8][9][10][11] For example, the antenna operating at 1.63-2.9 GHz with relative bandwidth of 56% is proposed.…”

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

“…Patch antennas [3][4][5][6][7][8][9] and dipole antennas [10][11][12][13][14][15][16][17][18] have been widely employed for base-station applications. Several dual-polarized patch antennas have been studied in, [3][4][5][6] but they suffer from narrow bandwidth.…”

“…Various dipole antennas for base station were presented in, [10][11][12][13][14][15] but their bandwidths are less than 56%, and are unable to cover additional IMT1400/IMT1500/ FDD1500/FDD1600 operating bands. In Reference 16 a dual-polarized wideband bowtie-shaped dipole antenna was presented to provide wide bandwidth of 68% for VSWR<1.5, but the 3-dB beamwidth in the horizontal plane has a big fluctuation over the frequency band.…”

“…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.…”