CRLH Leaky Wave Antenna Based on ACPS Technology With 180$^{\circ}$ Horizontal Plane Scanning Capability

Chi, Yu-Jen; Chen, Fu-Chiarng

doi:10.1109/tap.2012.2224839

Cited by 20 publications

(6 citation statements)

References 17 publications

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“…Since the construction of LWAs inevitably depends on waveguiding structures, as illustrated in Figure 5, LWAs can be accordingly classified in reference to different waveguiding techniques, such as metallic waveguide [10], [17], [18], [22], [39], [40], [41], [42], [43], [44], [45], [46], [47], microstripline [11], [12], [48], [49], [50], [51], [52], [53], [54], [55], [56], hybrid waveguide-planar technology [57], [58], [59], [60], co-planar stripline (CPS) [61], [62], [63], [64], [65], coplanar waveguide (CPW) [66], [67], substrate integrated waveguide (SIW) [13], [14], [19], [20], [21], [23], [68], [69], [70], [71], [72],…”

Section: ) Uniform Quasi-uniform and Periodic-the Way Of Topologicall...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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Section: ) Uniform Quasi-uniform and Periodic-the Way Of Topologicall...mentioning

confidence: 99%

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

Zheng

Chan

2023

IEEE J. Microw.

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“…The interest in printed LWAs has increased significantly, mainly due to the development of metamaterial transmission lines. Over the past years, metamaterial transmission lines have been proposed as backward, forward, or backward-forward frequency scanning LWAs in particular by Grbic and Chi (Grbic & Eleftheriades, 2002;Chi & Chen, 2013). A very interesting property of these leaky-wave antennas is their capability to operate in the fundamental mode.…”

Section: Antenna Applicationsmentioning

confidence: 99%

State-of-the-art of Metamaterials: Characterization, Realization and Applications

Ruvio¹,

Leone²

2014

SET

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Metamaterials is a large family of microwave structures that produces interesting ε and μ conditions with huge implications for numerous electromagnetic applications. Following a description of modern techniques to realize epsilon-negative, mu-negative and double-negative metamaterials, this paper explores recent literature on the use of metamaterials in hot research areas such as metamaterial-inspired microwave components, antenna applications and imaging. This contribution is meant to provide an updated overview of complex microwave engineering for the generation of different types of metamaterials and their application in topical electromagnetic scenarios.

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“…However, this type of LWAs suffer from the open-stop band (OSB) effect when the beam scans through the broadside, causing the degradation of the gain and the deterioration of the reflection coefficient at broadside frequency. To suppress the OSB effect, many related methods have been investigated, including CRLH structures, [29][30][31][32][33][34] impedance matching methods, [35][36][37] and asymmetric structures. [38][39][40][41][42] In, 43 it is confirmed theoretically that the OSB effect of the linear polarized period LWA cannot be eliminated if the LWA unit cells are symmetric.…”

Section: Introductionmentioning

confidence: 99%

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Wang

Sun

Xue

2022

Int J RF Mic Comp-Aid Eng

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In this article, a periodic leaky‐wave antenna (LWA) with wide‐angle beam scanning and stable gain is proposed based on the meandering microstrip line. Due to the meandering property of the microstrip line, the longitudinal dimension of the antenna is reduced. Firstly, the radiation characteristic of the meandering microstrip line is analyzed in detail. Each corner of the meandering microstrip line is modeled by a shunt capacitance and shunt radiation conductance to acquire the equivalent circuit. Then, the frequency balanced condition is investigated based on the established equivalent circuit to realize continuous beam scanning through broadside. Subsequently, the method of open‐stop band (OSB) suppression is studied by introducing asymmetric perturbation on the LWA unit cell, which actually can be applied to eliminate the OSB effect in arbitrary symmetric LWAs. Finally, an antenna prototype is simulated and measured. The measured results agree well with the simulated results, validating the proposed method of OSB suppression. The measured results show that the designed antenna exhibits the beam scanning capacity of −47° to +76° with the frequency varying from 5.0 to 7.8 GHz and gain variation of 2.9 dB.

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CRLH Leaky Wave Antenna Based on ACPS Technology With 180$^{\circ}$ Horizontal Plane Scanning Capability

Cited by 20 publications

References 17 publications

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

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

State-of-the-art of Metamaterials: Characterization, Realization and Applications

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

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