Compact Shared-Aperture Dual-Band Dual-Polarized Array Using Filtering Slot Antenna and Dual-Function Metasurface

Cao, Yun Fei; Zhang, Xiu Yin; Xue, Quan

doi:10.1109/tap.2021.3111179

Cited by 34 publications

(18 citation statements)

References 29 publications

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“…In contrast, 8 does not support in-band decoupling. Even though in-band decoupling is considered in Refs 10,[15][16][17][18]20 the DSs (metal baffle, fence, or loop) do not incur field/current cancelation, so no decoupling frequencies are identified. The mutual coupling curves with transmission nulls in the proposed work obviously show better decoupling potential than the ones without transmission nulls.…”

Section: Resultsmentioning

confidence: 99%

“…To repair the distortion of HB radiation pattern, the LB antenna should be electromagnetically transparent to the HB wave. In stacked dual‐band antenna array, the HB antennas are disposed above the LB antenna radiator 15–20 . This configuration is more suitable for large frequency ratio (e.g., >3:1) applications, as the LB radiator should be sufficiently large to become the ground of the HB antenna.…”

Section: Introductionmentioning

confidence: 99%

“…In stacked dual-band antenna array, the HB antennas are disposed above the LB antenna radiator. [15][16][17][18][19][20] This configuration is more suitable for large frequency ratio (e.g., >3:1) applications, as the LB radiator should be sufficiently large to become the ground of the HB antenna. By taking advantage of the merits of interleaved and stacked schemes, the conceptual design of the proposed tri-band antenna array is given in Figure 1C.…”

Section: Introductionmentioning

confidence: 99%

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Tri‐band dual‐polarized base station antenna array with self‐decoupling ability

Chu

2022

Int J RF Mic Comp-Aid Eng

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A tri‐band dual‐polarized antenna array for base station applications is presented. The proposed tri‐band antenna array is devised by stacking the 1 middle‐band (MB) + 4 high‐band (HB) interleaved array above the low‐band (LB) patch antenna. The MB antenna yields partial reflection to the HB subarrays, enabling cross‐band and in‐band decoupling abilities without introducing additional decoupling layer. With the aid of spatial cancelation and partition, transmission nulls are successfully generated in the in‐band mutual coupling curves. Measured results show that good impedance matchings and polarization isolations are acquired in the operating bandwidths. The measured co‐ and cross‐polarized in‐band isolations in the HB are improved to >22.4 dB and >29.1 dB, respectively. The HB radiation patterns are well restored.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Tri‐band dual‐polarized base station antenna array with self‐decoupling ability

Chu

2022

Int J RF Mic Comp-Aid Eng

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“…To reduce the cross-band scattering, a novel method is presented in [18], [19], [20], [21], and [22]. By inserting a frequency selective surface (FSS) layer between the LB and HB elements, the cross-band scatterings in [18], [19], [20], and [21] are effectively reduced. In these designs, the HB elements are usually placed above the LB element.…”

Section: Introductionmentioning

confidence: 99%

A Mutual-Coupling-Suppressed Dual-Band Dual-Polarized Base Station Antenna Using Multiple Folded-Dipole Antenna

Liu

Gao

Sanz-Izquierdo

et al. 2022

IEEE Trans. Antennas Propagat.

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An interleaved shared-aperture dual-band dualpolarized base station array antenna is proposed in this article. The lower-band (LB) element is realized by using a multiple folded-dipole antenna (MFDA) and four parasitic loops. To interpret the working principle of the MFDA, a double folded-dipole antenna (DFDA) is firstly analyzed by using the transmission line (TL) model. Then, by combining two bended DFDAs and introducing four parasitic loops, a low cross-band scattering LB element with a high out-of-band rejection level of 16 dB is obtained to cover 2.3-2.7 GHz. The higher-band (HB) element with a wide impedance bandwidth of 42.5% (3.0-4.6 GHz), a high roll-off rate (RoR) of 249.2 dB/GHz, and a high out-of-band rejection level of 17 dB is obtained by introducing a meander line loop (MLL), a rectangular loop (RL), and V-shaped strips (VSS) near the dipole arms. By combining the proposed lowscattering low-pass LB element and the high-RoR high-pass HB element, a novel interleaved shared-aperture dual-band dualpolarized array antenna with a small frequency ratio of 1.46 and a high cross-band isolation level of 25 dB is realized. Due to the low-scattering characteristic and filtering response of the LB element, the radiation patterns of the wideband HB sub-arrays are almost unaffected.

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“…Here, the aperture of the LB antenna fully overlaps with those of the HB antennas, so the total aperture of the antenna array is not increased. In this respect, typical antenna placement schemes like embedded scheme, [2][3][4][5][6][7] interleaved scheme, [8][9][10][11][12][13][14][15][16][17][18][19] and stacked scheme [20][21][22][23][24][25][26][27] have been invented. To achieve further miniaturization, profile reduction should also be considered in shared-aperture antenna array design.…”

Section: Introductionmentioning

confidence: 99%

Artificial magnetic conductor‐backed dual‐band shared‐aperture antenna array for base station applications

Chu

2022

Int J RF Mic Comp-Aid Eng

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A low‐profile dual‐band dual‐polarized base station antenna array is proposed. The dual‐band array is backed by an artificial magnetic conductor (AMC) surface. The AMC achieves profile reduction to 0.159 λL0 in the low band (LB), but it acts as a bandpass metasurface in the high band (HB). The nested design of AMC unit cell creates two out‐of‐phase induced currents with lower intensities, enabling suppression and cancelation of HB scattered fields. The back cavities establish clear and independent radiating environments for the LB and HB antennas. They aid in further radiation pattern restoration and antenna profile reduction. The proposed antenna array was fabricated and experimentally measured. The simulated and measured results are presented. The operating principles of the proposed AMC and back cavities are also investigated.

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Compact Shared-Aperture Dual-Band Dual-Polarized Array Using Filtering Slot Antenna and Dual-Function Metasurface

Cited by 34 publications

References 29 publications

Tri‐band dual‐polarized base station antenna array with self‐decoupling ability

Tri‐band dual‐polarized base station antenna array with self‐decoupling ability

A Mutual-Coupling-Suppressed Dual-Band Dual-Polarized Base Station Antenna Using Multiple Folded-Dipole Antenna

Artificial magnetic conductor‐backed dual‐band shared‐aperture antenna array for base station applications

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