Investigation on SIW Slot Antenna Array with Beam Scanning Ability

Li, Yanfei; Li, Yang

doi:10.1155/2019/8293624

Cited by 7 publications

(6 citation statements)

References 10 publications

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“…To enhance the scanning range of planar phased arrays, multiple slotted beam-scanning SIW antennas have been proposed [6], [7], however they require feeding networks and phase shifters.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable SIW Antenna for Fixed Frequency Beam Scanning and 5G Applications

et al. 2020

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A novel reconfigurable slotted leaky-wave antenna (LWA) based on a substrate integrated waveguide (SIW) with a fixed-frequency beam-steering capability is presented in this paper. For improved compactness, the structure is based on a SIW technology with rectangular slots fed by associated coupling with plated-through holes (PTH).This represents a new feeding method for etched slots in SIW antennas. Each via is loaded with a pin diode on both sides frontend of the waveguide. The pin diodes are tunable by adjusting the DC bias voltage, which results in beam scanning at a fixed frequency of around 27 GHz. Thus an electronically controlled steerable SIW antenna has been designed and experimentally verified that the radiation angle varies from −33 • to +33 • .

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“…To enhance the scanning range of planar phased arrays, multiple slotted beam-scanning SIW antennas have been proposed [6], [7], however they require feeding networks and phase shifters.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable SIW Antenna for Fixed Frequency Beam Scanning and 5G Applications

et al. 2020

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“…Sparse arrays have limitations compared to full arrays, as they generate weaker beams when steered away from the boresight and have a restricted steering range [51]. However, sparse arrays can still produce beams with similar width to full arrays and offer reasonable performance for beam steering applications while reducing hardware requirements [52]. Additional insight into this aspect is provided by the analytical expression for directivity in the context of wide scanning characteristics of sparse phased arrays [53].…”

Section: B 4 × 4 Array With Beam Steeringmentioning

confidence: 99%

Sparse Array Mutual Coupling Reduction

Larmour,

Buchanan,

Fusco

et al. 2024

IEEE Open J. Antennas Propag.

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This paper provides a concise overview of recent developments in sparse antenna arrays, with a specific focus on techniques for reducing mutual coupling. It explores the concept and definitions of sparse arrays in different applications, highlighting their historical significance in antenna theory. The paper addresses the mutual coupling problem and presents reduced coupling geometrical configurations through illustrative examples. Various mutual coupling compensation techniques are discussed. The paper conducts a comprehensive comparison of multiple array design optimisation techniques, including genetic algorithm, covariance matrix adaptation evolution strategy, particle swarm optimisation, trust-region framework, Nelder-Mead simplex algorithm, interpolated Quasi-Newton, and classic Powell. The comparison emphasizes achieving desired radiation performance and evaluates the mutual coupling coefficient using 4 × 4 planar arrays and 16 × 1 linear arrays with typical patch antennas in the mmWave bands. Notably, the paper considers optimised non-uniform antenna element positioning within the arrays, which has shown promising results in reducing mutual coupling. The study also introduces the application of beam steering to these optimised non-uniform arrays, demonstrating resilience to beam steering degradation and potential performance improvements. The findings indicate that particle swarm optimisation generally provides the most consistent performance across the discussed optimisation problems.INDEX TERMS algorithms, antenna arrays, antenna array mutual coupling, mutual coupling, optimization methods, sparse array antennas

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“…In [ 9 ], the same concept of switched parasitic patches at 60 GHz for WLAN applications has been introduced for main beam steering. In [ 10 ], a sparse substrate integrated waveguide (SIW) slot antenna array has been introduced. The genetic algorithm was utilized to optimize the position of each element over the aperture of

, where

is the free space wavelength.…”

Section: Introductionmentioning

confidence: 99%

Linear Antenna Array Sectorized Beam Scanning Approaches Using Element Position Perturbation in the Azimuth Plane

El-Rahman

Elkhawaga

Hussein

et al. 2023

Sensors

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In this paper, two sector beam scanning approaches (BSAs) based on element position perturbations (EPPs) in the azimuth plane are introduced. In EPP-BSA, the elements’ excitations are kept constant and the elements’ positions in the direction normal to the array line are changed according to a predetermined EPP pattern. The magnitude and repetition rate of the selected EPP pattern determines the steering angle of the main beam. However, EPP-BSA results in a wide scanning range with a significant increase in the side lobe level (SLL). To mitigate this drawback, a reduction in the SLL of the array pattern is firstly performed using the single convolution/genetic algorithm (SC/GA) technique and then perturbing the elements’ positions in the azimuth plane. This combination between SLL reduction and EPP-BSA (SLL/EPP-BSA) results in a smaller scanning range with a relatively constant half power beamwidth (HPBW) and a much lower SLL. In addition, keeping the synthesized excitation coefficients constant without adding progressive phase shifters facilitates the manufacturing process and reduces the cost of the feeding network. Furthermore, a planar antenna array thinning approach is proposed to realize the EPP-BSA. The results are realized using the computer simulation technology (CST) microwave studio software package, which provides users with an optimized modeling environment and results in realizable and realistic designs.

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Investigation on SIW Slot Antenna Array with Beam Scanning Ability

Cited by 7 publications

References 10 publications

Reconfigurable SIW Antenna for Fixed Frequency Beam Scanning and 5G Applications

Reconfigurable SIW Antenna for Fixed Frequency Beam Scanning and 5G Applications

Sparse Array Mutual Coupling Reduction

Linear Antenna Array Sectorized Beam Scanning Approaches Using Element Position Perturbation in the Azimuth Plane

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