Wideband Leaky-Wave Antennas Loaded With Gradient Metasurface for Fixed-Beam Radiations With Customized Tilting Angles

Chen, Jianfeng; Yuan, Wei; Zhang, Cheng; Tang, Wenxuan; Wang, Lei; Cheng, Qiang; Cui, Tie Jun

doi:10.1109/tap.2019.2940542

Cited by 28 publications

(5 citation statements)

References 47 publications

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“…Furthermore, glide symmetry has been recently proposed to design dispersive lenses that correct for the beam-squint of leaky-wave antennas. Although this dispersive lens may be designed using conventional periodic structures, alternative implementations with glide-symmetric holes in [73] and pins in [103] have been proposed in the literature. For example, it was demonstrated in [73] that glide symmetries simplify the manufacturing of the antenna, requiring fewer holes and with a larger diameter for the same frequency band, thus reducing the manufacturing costs.…”

Section: F Leaky-wave Antennasmentioning

confidence: 99%

On the Benefits of Glide Symmetries for Microwave Devices

et al. 2021

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Section: F Leaky-wave Antennasmentioning

confidence: 99%

On the Benefits of Glide Symmetries for Microwave Devices

et al. 2021

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“…Suppose special concepts and techniques can be exploited to design LWAs with reduced beam-squinting effects or even with the radiation beam being fixed to a spatial angle over a wide bandwidth, i.e., low-or non-dispersive LWAs. In that case, we can realize a real "wideband" LWA in which both the impedance and radiation bandwidth are wideband [16], [29], [61], [103], [212], [213], [214], [215], [216], [217], [218], [219]. If so, those conventional standingwave antenna arrays such as the series-fed patch or slotted SIW/waveguide antennas, which are typically used in radar systems (e.g., FMCW automotive radars) [130], [132], [133], could be superseded in practice by such wideband LWAs.…”

Section: B Wideband Performance With Reduced Beam-squinting Effects O...mentioning

confidence: 99%

Leaky-Wave Structures and Techniques for Integrated Front-End Antenna Systems

Zheng

Chan

2023

IEEE J. Microw.

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Leaky-wave antenna (LWA), as a special kind of waveguiding structure simultaneously characterized by both the guidance and radiation of electromagnetic waves along it, has received much attention and has been in the spotlight of both academia and industry since its inception in the 1940s. This is mainly because LWAs possess many appealing properties such as the highly directive beam, easy feeding mechanism, simple configuration, and particular frequency-driven beam-scanning, which enable them to hold promise in the development of a unique front-end antenna solution than others (e.g., reflector antenna and phased array). In addition to these inherent features, the exploitation of LWAs featuring multifarious sophisticated electrical functionalities (i.e., functional LWAs), with resort to engineering relevant radiating discontinuities and waveguiding structures, constitutes one mainstream research in the communities and increasingly prevails in the research & development of modern multifunctional wireless RF/microwave systems recently. This article is structured under this background, which is mainly dedicated to reviewing and investigating several enabling concepts, structures, and techniques that are specifically applied to the design of functional LWAs characterized by, for example, simultaneously low side-lobe and cross-polarization behaviors, rapid beam-scanning, stable radiation, frequency-selectivity, and open-stopband suppression. To make the technical discussions much more self-contained and systematic, this article begins with leaky-wave basics as well as general geometrical and electrical characteristics of LWAs. In addition, some representative system-level applications enabled by LWAs are briefly described, together with several promising research directions that can be further explored and galvanized, from the authors' perspective.

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“…The elimination of the first stopband inherently reduces the dispersion of the first mode, which means that the bandwidth is increased. This feature can be used, for example, to control the radiation of leaky-wave antennas [51], [22], [52], [53], [54]. remarkable antenna was proposed in [52] in which glide symmetry was used to compensate the phase dispersion of a leaky-wave antenna, producing a low-cost broadband antenna for point-to-point communications at 60 GHz.…”

Section: A One-dimensional Glide-symmetric Structuresmentioning

confidence: 99%