Enhancing characteristics of dual‐polarized BTS element antenna using metal director

In this article, a broadband dual-polarized filtering basestation antenna is proposed. The structure of proposed antenna consists of a main radiation element, two parasitic rings, balun feeding line, and metal reflector. The parasitic ring embedded in the antenna radiating arm not only generates a high-frequency radiation null, but also expands the antenna bandwidth. At the same time, a parasitic ring is loaded on the back of the substrate to generate a low-frequency radiation null. These two parasitic rings make full use of the spatial position of the antenna and produce a better filtering effect. In order to verify the feasibility of the antenna, the designed antenna was processed and measured. In the end, the designed antenna achieves an impedance bandwidth of 48.3% (VSWR < 1.5, at 4.35 GHz), the measured average gain is 8.5 dBi. Out-of-band suppression at low frequencies (2-2.7 GHz) are greater than 27 dB, and out-of-band suppression at high frequencies (6.1-6.5 GHz) are greater than 17 dB. In addition, the antenna covers the 5G communication frequency band under Sub-6G, which is suitable for 5G base-station antennas.

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A broadband dual‐polarized filtering base‐station antenna for 5G communication applications

Wang

Zhai

et al. 2022

“…The first uses a coaxial cable 1–5 which the outer core connects to one arm of the dipole and the inner core connects to the other arm. The second way is to use the dielectric microstrip balun, which contains an open stub on the front side and two grounded patches on the back side of the substrate 6–9 . The third way is to use a balun made of air mocrostrip, which does not need to be fabricated on the substrate 10–12 .…”

Section: Introductionmentioning

confidence: 99%

“…The second way is to use the dielectric microstrip balun, which contains an open stub on the front side and two grounded patches on the back side of the substrate. [6][7][8][9] The third way is to use a balun made of air mocrostrip, which does not need to be fabricated on the substrate. [10][11][12] When the latter two feeding methods are applied, the signal will be coupled from the open stub to the grounded patches through the gaps, and then transmitted to the dipole, generating current in the same direction on the two arms.…”

Section: Introductionmentioning

confidence: 99%

A new balun that can improve port isolation degree of a dual‐polarized antenna

Huang

2022

Based on the traditional dielectric microstrip balun, a new-type coupling balun is presented in this study. The front side of this balun is composed of an open stub and two rectangular patches. One end of the rectangular patches is opencircuited, and the other end connects with the dipole. On the back side, there are two other rectangular patches with one end grounded and the other end open-circuited. When using such balun for feeding, one can still get a wide bandwidth, and more importantly, obtain higher port isolation. Compared with the dipole fed by the traditional balun, the maximum/average port isolation of the dipole fed by the new-type one is increased by 10.8 dB/7.9 dB.The new-type balun has a good application prospect in dual-polarized antenna. K E Y W O R D Sdipole antenna, dual-polarized antenna, port isolation, wideband balun How to cite this article: Huang H. A new balun that can improve port isolation degree of a dual-polarized antenna.

“…Several interesting low-profile designs have been reported in recent times [20][21][22] with an objective to demonstrate dual-band dual-polarization. However, these do not include the tracking feature.…”

Section: Introductionmentioning

confidence: 99%

Lower profile high‐power dual‐polarized wide‐beam tracking antenna at S‐band

Chakrabarti

Sadhukhan

Chakraborty

et al. 2022

An S‐band dual linearly polarized monopulse tracking antenna has been developed with a cavity‐backed cross‐dipole antenna as the element. Wide‐beam and wideband tracking have been successfully demonstrated. Systematic design approaches have been presented. The cavity arrangement enhances the beamwidth of a horizontal dipole significantly retaining its wideband characteristics. The element exhibits a 3 dB beamwidth ≥145°. Such a wide beamwidth made the cavity‐backed cross dipole an attractive choice as the element for the tracking antenna. The monopulse antenna demonstrates an impedance bandwidth ≥20.7% with isolation superior to 24 dB. Dual polarized tracking has been effectively verified over ≥15% bandwidth with a broad‐side gain of 11.2 dBi. The angular field‐of‐view (FOV) for the tracking is ≥60°. Higher tracking bandwidth and wider FOV of the array, lower profile, and high‐power handling capability are the superiority of the developed antenna.