A Millimeter-Wave Wideband Dual-Polarized Antenna Array With 3-D-Printed Air-Filled Differential Feeding Cavities

Sun, Fanqi; Li, Yujian; Wang, Junhong; Ma, Yuchen; Ge, Lei; Ai, Bo; He, Ruisi

doi:10.1109/tap.2021.3111502

Cited by 31 publications

(9 citation statements)

References 44 publications

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“…Even very recent and innovative works in the field of fullmetal sub-wavelength steerable arrays like [27] are limited to single-polarization operation. On the contrary, other full-metal designs like [41] present dual-polarization but their radiation pattern cannot be steered. In fact, if steering capabilities were to be implemented in the array proposed in [41], the GL-free FoV would be very limited due to its high periodicity.…”

Section: Comparison With Other Work In the State Of The Artmentioning

confidence: 98%

“…On the contrary, other full-metal designs like [41] present dual-polarization but their radiation pattern cannot be steered. In fact, if steering capabilities were to be implemented in the array proposed in [41], the GL-free FoV would be very limited due to its high periodicity.…”

Section: Comparison With Other Work In the State Of The Artmentioning

confidence: 98%

“…In order to put the performance of the EQA in perspective, the obtained results are now compared with other AAs in the state of the art. The following four references (some of them based on dielectric patches, since there are not many waveguide-based AAs with wide FoV in the literature) are selected [27], [39]- [41].…”

Section: Comparison With Other Work In the State Of The Artmentioning

confidence: 99%

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Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Polo‐López

Menargues²,

Capdevila³

et al. 2022

IEEE Trans. Antennas Propagat.

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This paper proposes an original structure of evanescent quad-ridge antenna to conceive dual-polarized full-metal front-ends that can be used in active antennas with wide field-ofview. An original design methodology is here proposed that allows to induce radiation from sub-wavelength squared apertures based on the use of evanescent and quad-ridge waveguides. The proposal is illustrated by means of a design with 4.5% bandwidth providing dual-circular polarization with good performance up to 50 o -scanning even in the diagonal plane. For comparison purposes, a metallic benchmark is also proposed, which is based on the use of classical quad-ridge horns. Such comparative analysis allows to understand the superior performance of the proposed concept and its main advantage: it allows to avoid the excitation of the first high order mode in the squared quadridge aperture. The excitation of such spurious mode in the antenna is explained in terms of simple equivalent circuit models characterizing the aperture periodic discontinuity.

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Section: Comparison With Other Work In the State Of The Artmentioning

confidence: 98%

Section: Comparison With Other Work In the State Of The Artmentioning

confidence: 98%

Section: Comparison With Other Work In the State Of The Artmentioning

confidence: 99%

See 1 more Smart Citation

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Polo‐López

Menargues²,

Capdevila³

et al. 2022

IEEE Trans. Antennas Propagat.

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“…D ual-polarized antennas offer a pair of communication channels with the same operating frequency but orthogonal polarization, enabling frequency reuse and polarization diversity. They have significant advantages such as high signal transmission capacity and strong anti-multipath fading [1][2][3][4][5][6], making them widely used in mobile communication systems. With the rapid development of modern RF front-end technology, there is a growing demand for dual-polarized antenna integration with increasingly limited space available for antenna design.…”

Section: Introductionmentioning

confidence: 99%

Compact Dual-polarized Antenna with Wide Band and High Isolation Using Characteristic Mode Analysis

Zhan,

Huang,

Deng

et al. 2024

PIER C

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In this paper, a compact dual-polarized antenna with wide band and high isolation is proposed, which can be applied to the 5G WiFi frequency band. The antenna is composed of 2 × 2 arrayed patches and two orthogonal L-shaped probe structures with reduced middle patch width and loaded U-shaped slots. The proposed antenna achieves a compact size by eliminating the need for a complex feeding network, instead utilizing only two closely spaced L-shaped probes for feeding. The antenna's radiation modes excited by two ports are orthogonal in polarization direction, and each port can excite two linearly polarized radiation modes respectively within the operating frequency band, thereby achieving dual-linear polarization and wideband performance. The antenna is analyzed and designed using characteristic mode analysis (CMA). By reducing the patch middle width and loading U-shaped slots on the L-shaped probe of the antenna, the suppression of high-order modes, improvement of isolation, and reduction of cross-polarization levels are achieved. The size of the antenna is 0.54λ0 × 0.54λ0 × 0.068λ0 (λ0 is the free-space wavelength of central frequency). The measured bandwidth is 23.5% (4.73 GHz-5.99 GHz) with |S11| < −10 dB, |S21| < −27.9 dB, boresight gain of 4.8 dBi-6.2 dBi, and cross-polarization levels better than −23 dB.

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“…Meanwhile, stepped or tapered waveguide structures are another kind of scheme to improve the impedance matching of both E-plane [16], [35] and H-plane [36] waveguide T-junctions. Benefiting from those wideband waveguide T-junctions, bandwidths of more than 30% have been achieved by several millimeter-wave arrays with promising radiation performance [16], [31]- [33], [35]- [37]. Unfortunately, a bandwidth of 40% that is desirable for the fifth generation (5G) millimeter-wave multi-band applications was still a challenge in the reported high-gain arrays with large scales.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth Enhancement of Millimeter-Wave Large-Scale Antenna Arrays Using X-Type Full-Corporate Waveguide Feed Networks

Sun

Wang

et al. 2022

IEEE Open J. Antennas Propag.

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A one-time-reflection equivalent model of the full-corporate waveguide feed networks is investigated to propose a novel approach to bandwidth enhancement of millimeter-wave large-scale antenna arrays. Theoretical analysis reveals that the in-phase superposition phenomenon of multiple small reflections at specific frequencies caused by the topology of the feed network is also a significant factor to affect the achievable bandwidth of the large-scale arrays, apart from the bandwidth performance of the individual power dividers and radiators composing the array. In order to weaken the undesirable effects on bandwidths caused by the small reflections, a full-corporate waveguide feed network with an X-type topology is then presented. Air-filled waveguide X-junctions and waveguide-fed horn sub-arrays are designed to fulfill new threedimensional (3D) printed V-band antenna arrays. Excellent performance, including an improved bandwidth of about 40%, a gain of up to 27.8 dBi, and stable unidirectional radiation patterns with cross polarization of less than -32 dB, are confirmed experimentally by an 8 × 8 prototype. The theoretical model and the bandwidth enhancement scheme in this paper are valuable to realize the high-gain wideband antenna arrays for emerging millimeter-wave applications.

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A Millimeter-Wave Wideband Dual-Polarized Antenna Array With 3-D-Printed Air-Filled Differential Feeding Cavities

Cited by 31 publications

References 44 publications

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Solving Sub-Wavelength Lattice Reduction in Full-Metal Front-Ends for Dual-Polarized Active Antennas

Compact Dual-polarized Antenna with Wide Band and High Isolation Using Characteristic Mode Analysis

Bandwidth Enhancement of Millimeter-Wave Large-Scale Antenna Arrays Using X-Type Full-Corporate Waveguide Feed Networks

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