A Novel Stacked Antenna Configuration and its Applications in Dual-Band Shared-Aperture Base Station Antenna Array Designs

Chen, Yikai; Zhao, Jiacheng; Yang, Shiwen

doi:10.1109/tap.2019.2930136

Cited by 95 publications

(48 citation statements)

References 27 publications

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“…13 The second form is sandwich structure applicable for the high frequency ratio. [17][18][19] The design implements a dual-band antenna operating at 0.69 to 0.96 GHz and 3.5 to 4.9 GHz by introducing a frequency-selective surface with filtering properties between higher and lower bands. 17 In other designs, four metal pieces are introduced between higher and lower bands to provide capacitive loading for lower band (LB) and ground surface for higher band (HB).…”

Section: Introductionmentioning

confidence: 99%

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

Qiu

Gao

et al. 2021

Int J RF Microw Comput Aided Eng

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A compact dual-band antenna is designed in this paper, which consists of a pair of lower band (LB) element and four higher band (HB) elements operating at 0.69 to 0.96 GHz and 3.3 to 3.6 GHz, respectively. Four HB elements are put between the adjacent dipole arms of LB element. All of elements are at the same height, and having their own reflector. A designed dual-band dualpolarized antenna at high frequency ratio will be fulfilled without added any other structure. The fabricated antenna sample has been measured, results show that the average gains of LB and HB elements are 8.48 dBi and 8.44 dBi and the half power beam widths are 69.1 ± 9 and 60.7 ± 8.5 , respectively. Moreover, dual-polarized property of both LB and HB is checked. The crosspolarization discrimination values are greater than 15 dB. The proposed antenna is implemented the coverage of two bands with high frequency ratio with a simple structure, and the antenna with both low profile and high gain characteristics. All of the results demonstrate that the antenna radiation boasts its favorable performance and can be a good candidate in 5G mobile communication system for sub-6 GHz base stations.

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Section: Introductionmentioning

confidence: 99%

“…17 In other designs, four metal pieces are introduced between higher and lower bands to provide capacitive loading for lower band (LB) and ground surface for higher band (HB). 18 The same operating band is implemented as in the Reference 17. The third is a special type, which uses only two crossed dipoles to achieve multiple bands.…”

Section: Introductionmentioning

confidence: 99%

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

Qiu

Gao

et al. 2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

show abstract

“…Profile miniaturization refers to reducing antenna's profile height. Artificial magnetic conductor (AMC) surface 3 and top loading 4 have been used to achieve considerable profile reduction. Array aperture miniaturization refers to miniaturizing the total occupied area of an antenna array by reducing or reusing the aperture.…”

Section: Introductionmentioning

confidence: 99%

Miniaturization of dual‐polarized crossed dipole antenna using dielectric loading

Chu

2021

Int J RF Microw Comput Aided Eng

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In this article, dielectric loading is introduced as a method for miniaturizing dual‐polarized crossed dipole antenna. Specifically, the size, thickness, and relative permittivity of dielectric slab are considered as three critical parameters for antenna miniaturization. It is found that the three parameters have different loading effects on a crossed dipole, due to distinct modal current and field distributions. Furthermore, an antenna configuration loaded by 3‐layer dielectric slabs is proposed. Utilizing the slow‐wave property of dielectric loading, two miniaturized crossed dipole antennas with size of 40 mm × 40 mm (0.29 λ0 × 0.29 λ0) are devised, exhibiting an at least 21% size reduction over the previous dual‐linearly‐polarized crossed dipole antennas. Simulated and measured results demonstrate that the proposed antennas have wide bandwidth (1.71‐2.69 GHz), desirable impedance matching (VSWR <1.5), stable radiation pattern, and low gain loss.

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“…These currents re-radiate and cause distortion of HB radiation patterns. Several solutions have been proposed to minimize the scattering and restore the HB patterns, including adding metal baffles or walls [2]- [4], using a stacked array configuration with HB elements mounted above LB elements [5]- [7], and using choking techniques [1].…”

Section: Introductionmentioning

confidence: 99%

“…However, there appears to be no systematic way of arriving at suitable arrangements and dimensions of the baffles. A stacked array configuration where HB elements are located above LB elements has been utilized in [5]- [7] to avoid the HB scattering from the LB element. In [5], the patch antennas operating in both bands are stacked with shaped reflectors and directors to improve the patterns.…”

Section: Introductionmentioning

confidence: 99%

Suppression of Cross-Band Scattering in Interleaved Dual-Band Cellular Base-Station Antenna Arrays

et al. 2020

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In this paper, novel techniques to suppress cross-band scattering in interleaved dual-band base station antenna arrays are presented. Firstly, the detrimental effect of high-band (HB) elements on low-band (LB) radiation performance is theoretically analyzed. With a thorough analysis, a capacitanceloaded HB element is innovated to solve the issue and restore the LB patterns. Secondly, to eliminate the reverse HB scattering caused by the LB element while enhancing the bandwidth of the LB element, a novel double-arm choked cross-dipole configuration is proposed. A compact array section is built with these innovated elements. The experimental results of the array show a largely suppressed cross-band scattering with stable radiation performance across the well-matched bands, demonstrating the effectiveness of the presented techniques. INDEX TERMS bandwidth enhancement, base station antennas, common-mode resonance, cross-band scattering suppression, dual-band array VOLUME xx, xxxx

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A Novel Stacked Antenna Configuration and its Applications in Dual-Band Shared-Aperture Base Station Antenna Array Designs

Cited by 95 publications

References 27 publications

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

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

Miniaturization of dual‐polarized crossed dipole antenna using dielectric loading

Suppression of Cross-Band Scattering in Interleaved Dual-Band Cellular Base-Station Antenna Arrays

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