Design and discussion of a broadband cross‐dipole with high isolation and low cross‐polarisation utilising strong mutual coupling

Bao, Zengdi; Zong, Xin; Nie, Zaiping; Yang, Shiwen

doi:10.1049/iet-map.2013.0440

Cited by 14 publications

(6 citation statements)

References 18 publications

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“…However, the isolation of the antenna was only 22 dB. Fortunately, wider bandwidth and higher isolation were achieved in [17]. By researching the mutual coupling with cross-dipoles, the bandwidth from 1.69 GHz to 2.95 GHz (54%) and high isolation (34 dB) were achieved.…”

Section: Introductionmentioning

confidence: 99%

Broadband Dual-Polarized Loop Cross-Dipole Antenna for 5G Base Station Applications

et al. 2020

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A broadband dual-polarized base station antenna is proposed in this paper. The antenna consists of loop cross-dipoles, Y-shaped coupling feeding lines, and a metal box reflector. An equivalent circuit model including a signal flow diagram is established to analyze the mechanism of the proposed antenna in detail. Moreover, the Y-shaped coupling feeding lines are introduced to control the coupling with the antenna to achieve broadband and good impedance matching. The prototype of the antenna is fabricated and measured. The measured results show that the antenna with simple structures can operate at the band of 3.2–5.22 GHz (48%) with high port-to-port isolation (35 dB) and stable gain (9 ± 1 dBi). The measured results show good agreement with simulated results, especially in cross-polarization discrimination ratio (>27 dB) and the half power beam width (61° ± 3° at the E-plane, 68° ± 3° at the H-plane). In summary, the proposed antenna could be a good candidate for 5G sub-6 GHz base station applications.

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Section: Introductionmentioning

confidence: 99%

Broadband Dual-Polarized Loop Cross-Dipole Antenna for 5G Base Station Applications

et al. 2020

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“…They cover the band requirements of 2G/3G/4G LTE . The dual‐polarized base station antenna in References is based on the same principle.…”

Section: Introductionmentioning

confidence: 99%

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

Chen

et al. 2019

Int J RF Microw Comput Aided Eng

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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.

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“…However, it suffers from high cross‐polarisation radiation. A mechanically fabricated crossed dipole with better than 35 dB isolation is discussed in [7]. Lack of balun feedline with balanced differential signals along with inevitable fabrication tolerances have affected the antenna performance.…”

Section: Introductionmentioning

confidence: 99%

Highly isolated crossed dipole antenna with matched copolar beams

2018

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A bent crossed dipole antenna for dual linear polarisation applications is introduced. The proposed efficient techniques incorporated into the design provide the antenna with high port isolation and low crosspolarisation. A better than 56 dB measured port-to-port isolation is achieved in the frequency range of 2.7-3 GHz. The cross-polarisation level remains 40 dB below the copolarisation peak in both principal planes. A pair of matched copolar beams in the corresponding principal planes is obtained owing to the use of identical and symmetrical structures in orthogonal directions. These features along with simple geometry and inexpensive PCB fabrication make the proposed antenna a promising candidate for multi-mission applications.

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Design and discussion of a broadband cross‐dipole with high isolation and low cross‐polarisation utilising strong mutual coupling

Cited by 14 publications

References 18 publications

Broadband Dual-Polarized Loop Cross-Dipole Antenna for 5G Base Station Applications

Broadband Dual-Polarized Loop Cross-Dipole Antenna for 5G Base Station Applications

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

Highly isolated crossed dipole antenna with matched copolar beams

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