3D radar imaging based on frequency-scanned antenna

Sun, Zheng; Ren, Kaijun; Chen, Qiang; Jia-jun, Bai; Fu, Yunqi

doi:10.1587/elex.14.20170503

Cited by 10 publications

(1 citation statement)

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“…Several articles in the literature have not stated radiation efficiency but the switched 2-port D-BAA has better efficiency than [18] and similar to [35]. Furthermore, the proposed antenna has the least fabrication requirement, along with the antenna presented in [19], compared to others especially the SIW and CTS structures [18], [32], [33], [37] that require multiple layers, drilling holes and have complicated fabrication process.…”

Section: Comparison With Existing Literaturementioning

confidence: 93%

Investigation of Frequency Scanning Printed Bruce Array Antenna

et al. 2020

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A printed edge-fed counterpart of wire Bruce array antenna, with open-stopband mitigation at broadside, is presented. The proposed antenna comprises of 11 meandered unit-cells periodically modulated in congruence with wire Bruce array antenna's theory. To mitigate the effects of open-stopband, the horizontal and vertical lengths of unit-cell are adjusted along with the addition of an inward bent element allowing seamless scanning from backward to forward endfire region. The antenna has two distinct frequency scanning ranges between 18.0 GHz and to 37.20 GHz with Sidelobe level ≤ -10 dB. A dual Bruce array, using two-way Klopfenstein tapered feedline power divider, is then proposed to increase the peak realized gain to 18.61 dBi followed by a two-port solution to widen the scanning range of the antenna.

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Section: Comparison With Existing Literaturementioning

confidence: 93%

Investigation of Frequency Scanning Printed Bruce Array Antenna

et al. 2020

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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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