Millimeter-Wave Magneto-Electric Dipole Antenna Array With a Self-Supporting Geometry for Time-Saving Metallic 3-D Printing

Sun, Fanqi; Li, Yujian; Ge, Lei; Wang, Junhong

doi:10.1109/tap.2020.3016158

Cited by 28 publications

(12 citation statements)

References 21 publications

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“…PBF techniques allow the direct printing of metal components; however, surface roughness is a potential issue, which can increase loss. This technique was used to create waveguides and power dividers [18], a lightweight and cost-effective panel antenna in the millimeter waveband [19], a 3D beam scanning leaky wave antenna array at 30 GHz [20], and a wideband circularly polarized (CP) waveguide array antenna consisting of four antipodally ridged elements and a compact feeding network [21]. The example in [19] showed a comparison between a computer numerical control (CNC)-machined antenna and a SLS-printed antenna; on average, the SLS-printed antenna was 11% and 13% less efficient in the K-and Ka-bands, respectively, largely owing to increased surface roughness.…”

Section: D Printing With Conductive Materialsmentioning

confidence: 99%

3D Printing Materials and Techniques for Antennas and Metamaterials: A survey of the latest advances

Whittaker

Zhang

Powell

et al. 2023

IEEE Antennas Propag. Mag.

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his is a review article of the latest advances in 3D printing for enabling new materials and new geometries for radiofrequency (RF) devices, antennas, and metamaterials. The article discusses the achievable material properties and various optimized applications that are achievable by creating new shapes in either dielectric or metal. This article demonstrates what is currently possible with additive manufacturing and the current limitations. Various additively manufactured RF devices are reviewed.

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Section: D Printing With Conductive Materialsmentioning

confidence: 99%

3D Printing Materials and Techniques for Antennas and Metamaterials: A survey of the latest advances

Whittaker

Zhang

Powell

et al. 2023

IEEE Antennas Propag. Mag.

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“…The maximum gain results of the arrays are 28.0 and 33.6 dBi separately, while the variation is less than 4.5 dB throughout the operating band. The additional loss caused by the printed surface roughness of about 10 μm [35] has been considered in the simulation.…”

Section: Simulated Array Performancementioning

confidence: 99%

“…Additional metallic pins [31]- [32] and irises [20], [33]- [34] were employed in the design of H-plane substrate-integrated and air-filled waveguide T-junctions to extend their operating bandwidths. 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].…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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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“…Recently, 3-D metal printing technique has been introduced in mm-wave antenna designs, which has the merits of low cost and flexible construction ability [35]. In 2016, an all-metal waveguide reflectarray is presented [36].…”

Section: Introductionmentioning

confidence: 99%

Wideband 3-D Printed All-Metal Reflectarray With Notches for Low-Cost Millimeter-Wave Applications

Cao

Deng

Hao

et al. 2023

IEEE Open J. Antennas Propag.

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In this paper, a 3-D printed all-metal reflectarray is presented for millimeter-wave applications. The array has sub-wavelength element spacing, so that the elements are non-resonant. A two-stage notch is etched at the top of the element, which provides multiple degrees of freedom for phase tuning. The phase variation range is more than 360 • by changing the height and width of the first stage of the notch. Thanks to the non-resonant property and the two-stage notching, stable phase shift can be maintained in wide frequency range. A reflectarray with 20×20 elements is fabricated by using 3-D printing technique, which has the merits of flexible construction, light weight and low cost. The simulated and measured results on radiation patterns and realized gain are highly consistent. The measured 1-dB gain bandwidth achieves 17.6%, ranging from 31 GHz to 37 GHz. In the whole 1-dB gain bandwidth, the measured aperture efficiency is higher than 47.7%, with a peak efficiency of 53.6% at 31 GHz. The proposed reflectarray has no substrate loss and can provide high aperture efficiency in wide bandwidth.INDEX TERMS Metal reflectarray, wideband, high aperture efficiency, 3-D printing.

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Millimeter-Wave Magneto-Electric Dipole Antenna Array With a Self-Supporting Geometry for Time-Saving Metallic 3-D Printing

Cited by 28 publications

References 21 publications

3D Printing Materials and Techniques for Antennas and Metamaterials: A survey of the latest advances

3D Printing Materials and Techniques for Antennas and Metamaterials: A survey of the latest advances

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

Wideband 3-D Printed All-Metal Reflectarray With Notches for Low-Cost Millimeter-Wave Applications

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