A Double-Layer Shaped-Beam Traveling-Wave Slot Array Based on SIW

Qiu, Lei; Xiao, Ke; Chai, Shun Lian; Qi, Hui; Mao, Jun

doi:10.1109/tap.2016.2600766

Cited by 17 publications

(7 citation statements)

References 23 publications

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“…Actually, mutual coupling between elements in a TSPAA is complicated and it is not easy to be calculated accurately [32]. For a linear traveling-wave array with uniform elements, the least square method was applied as optimized procedure to consider the mutual coupling [33]. However, we found that it could not work well for the TSPAAs in this work.…”

Section: Simulation-based Optimizationmentioning

confidence: 91%

“…Then, the actual conductance distribution [G pat i,probe ] and phase difference between adjacent elements [P pat i,probe ] are deduced from ( 8) and (10), respectively. After that, a trial and error algorithm proposed in [33] is applied to reduce the error between the actual aperture distribution and the ideal aperture distribution, which can be written as…”

Section: Simulation-based Optimizationmentioning

confidence: 99%

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Traveling-Wave Series-Fed Patch Array Antenna Using Novel Reflection-Canceling Elements for Flexible Beam

Han

et al. 2019

IEEE Access

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The methodology of designing traveling-wave series-fed patch array antennas (TSPAAs) based on reflection-canceling elements for flexible radiation pattern has been proposed. By introducing a quarterwave transformer as the reflection-canceling structure, the cascaded patch antenna with tapered width can be used as the reflection-canceling element for a nonuniformly spaced TSPAA. Because of its simple structure, the parameters of the transformer can be determined directly by the corresponding equivalent circuit. To achieve a flexible radiation pattern, the array aperture distribution can be controlled by changing the element width (for amplitude distribution) and the element spacing (for phase distribution). In this method, the initial array is synthesized through a genetic algorithm approach, and a simulation-based iterative process considering the accurate mutual coupling is developed to optimize the initial array. To evaluate the proposed method, two different types of 14-element linear arrays operating at ISM 24GHz are implemented for a low sidelobe pattern and shaped-beam pattern, respectively. The two arrays are both simulated, fabricated and measured, the measured results show reasonable agreement with the simulation results, which verifies the effectiveness and correctness of the proposed method in this paper.INDEX TERMS Genetic algorithm (GA), low sidelobe pattern, reflection-canceling element, simulationbased iteration procedure, shaped-beam pattern, traveling-wave series-fed patch array antenna (TSPAA).

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Section: Simulation-based Optimizationmentioning

confidence: 91%

Section: Simulation-based Optimizationmentioning

confidence: 99%

Traveling-Wave Series-Fed Patch Array Antenna Using Novel Reflection-Canceling Elements for Flexible Beam

Han

et al. 2019

IEEE Access

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“…Standing wave SIW arrays have radiation beams directed towards broadside, while travelling wave ones can direct the radiation beam in oblique directions. Numerous techniques have been proposed for designing such antennas in the literature, based on the design principles described in [24,25], complex feed networks [17,26], multi-layer [27] and planar arrays [28,29]. All these methods are complex and have large sizes.…”

Section: Introductionmentioning

confidence: 99%

Collocated MIMO travelling wave SIW slot array antennas for millimetre waves

Ghalib

Sharawi

Mittra

et al. 2021

IET Microwaves Antenna & Prop

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A novel four-element collocated travelling wave substrate integrated waveguide (SIW) multiple-input multiple-output (MIMO) antenna covering millimetre wave (mm-wave) bands (28-32 GHz) is presented. The antenna exhibits a matching bandwidth of more than 4 GHz and a measured gain of 15 dBi. The MIMO antenna elements are collocated, thus significantly reducing the size of the proposed design. To spatially isolate the beams (obtain lower correlation coefficient) of the MIMO antenna elements, the beams are oriented in different directions. The slots within each SIW array are designed to provide tilted beams, thus eliminating the need for a beam switching network. Four distinct beams are formed towards ±10°and ±30°. The dimension of the four-element MIMO SIW design is 68 � 30.68 � 0.5 mm 3 . The proposed antenna has a high gain, compact size, simpler feeding and enhanced MIMO capability compared to other SIW antennas proposed in the literature.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Substrate integrated waveguide (SIW) slot antenna arrays allow a large variety of slot configurations and feeding techniques and have been extensively studied in recent years [1–8]. Arrays are classified into two different types: standing‐wave and travelling‐wave arrays.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, two travelling‐wave longitudinal slot arrays were proposed for a similar main beam inclination and a lower SLL in [2, 3]. An impedance bandwidth enhancement of the longitudinal slot travelling‐wave SIW array was introduced using a double‐layer cavity in [4]. The bandwidth was improved by a double‐resonant feature of the cavity.…”

Section: Introductionmentioning

confidence: 99%