Wideband Slot Array Antenna Fed by Open-Ended Rectangular Waveguide at W-Band

Liu, Peiye; Pedersen, Gert Frølund; Zhang, Shuai

doi:10.1109/lawp.2022.3140700

Cited by 20 publications

(6 citation statements)

References 26 publications

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“…[17][18][19][20][21][22][23][24][25] Similarly, an 8 Â 8 slot array antenna fed by a compact hybrid feeding network in W-band is proposed in. 26 Here, the antenna exhibits a realized gain of 24.3-26.8 dBi from 78 to 110 GHz. Here, to feed the feeding network into one layer, a compact hybrid feeding network is used, which is a combination of ridge waveguides and E-plane hollow waveguides.…”

mentioning

confidence: 88%

“…A literature survey shows that in, 9–16 traditionally for W‐band applications, high‐gain antennas are realized by waveguides, leaky wave structures, slotted wave profiles, lensed antennas or multilayer printed circuit board (PCB)‐based microstrip patch arrays 17–25 . Similarly, an 8 × 8 slot array antenna fed by a compact hybrid feeding network in W‐band is proposed in 26 . Here, the antenna exhibits a realized gain of 24.3–26.8 dBi from 78 to 110 GHz.…”

Section: Introductionmentioning

confidence: 99%

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High‐gain W‐band‐printed antenna on flexible substrate

Biswas,

Karmakar,

Adhikar

et al. 2024

Int J Communication

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SummaryThis article demonstrates a novel type of series‐fed planar antenna array for a W‐band (70 GHz) application. The proposed architecture is a 5‐element antenna array with 10 numbers of gap‐coupled parasitic patches in microstrip configuration over a thin, flexible and bio‐compatible substrate named LCP (liquid crystal polymer). A detailed design methodology with all fabrication constraints has been elaborated on here. Full wave analysis of the whole structure has been carried out in the FEM‐based 3D electromagnetic (EM) solver ANSYS HFSS Suite V.19.2. Parametric simulations were studied to achieve the optimized values of all design parameters. Further, an empirical electrical equivalent circuit model is proposed for the antenna array, and it was validated with the simulation results obtained from the FEM solver. Two prototypes have been fabricated, and measurements were carried out to fetch all the designed antenna parameters. The proto version of the antenna offers peak directive gain of about 19 dBi with better than 22 dB of return loss and 80% radiation efficiency for the frequency range of 67–85 GHz. Experimental and simulated results closely match each other. Small deviations are attributed to practical imperfections incurred by fabrication tolerances, measurement inaccuracies, testing, assembly‐related issues and so forth. Finally, the current research work is compared with the recently reported literature.

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confidence: 88%

Section: Introductionmentioning

confidence: 99%

High‐gain W‐band‐printed antenna on flexible substrate

Biswas,

Karmakar,

Adhikar

et al. 2024

Int J Communication

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“…For the widely used fullcorporate feed networks with an H-type topology [10], [15], T-junctions operating as cascaded power dividers played a crucial role in the bandwidth improvement. 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.…”

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%

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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“…The use of waveguide as a source of excitation for a microstrip patch antenna through a coupling slot has been proposed by [1]. Eventually, this technique has been widely applied in communication systems [2,3] for several reasons, such as low losses, high accuracy of design and mechanical resistance. Therefore, the iris-fed antenna constitutes a prime candidate for exploration, and it is proposed to be set into a periodic unidimensional array for X-band communications.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis of Periodic Iris-Fed Patch Antenna Array Using Fast and Efficient Hybrid Analytical Approach

Abdi,

Aguili

2022

JTEC

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Planar antenna arrays are renowned for their high directivity and ease of implementation, while offering the possibility of controlling the radiation pattern. However, the study of the electromagnetic aspect taking into account the coupling between the array’s elements requires a memory space and a considerable calculation time. To overcome these drawbacks, a fast and rigorous full-wave numerical method for the electromagnetic analysis of a unidimensional periodic iris-fed patch antenna array has been proposed. The spatial electromagnetic calculation of a periodic structure of finite dimensions is reduced to a spectral calculation carried out on a single unit reference cell by applying periodicity conditions to it. The modeling of a unit cell is based on the MOM-GEC flexible formalism, which reduces the resolution of the electromagnetic problem to a simple manipulation of equivalent circuits. Firstly, a validation of the numerical approach took place through the verification of the boundary conditions applied to the current distribution. Next, the mutual coupling between the elements of the antenna array was calculated. Results were validated with those obtained with HFSS commercial software and they yield accurate and efficient solutions. Furthermore, a significant reduction of both memory storage requirement and computational time was observed.

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Wideband Slot Array Antenna Fed by Open-Ended Rectangular Waveguide at W-Band

Cited by 20 publications

References 26 publications

High‐gain W‐band‐printed antenna on flexible substrate

High‐gain W‐band‐printed antenna on flexible substrate

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

Electromagnetic Analysis of Periodic Iris-Fed Patch Antenna Array Using Fast and Efficient Hybrid Analytical Approach

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