Unequally Spaced and Excited Resonant Slotted-Waveguide Antenna Array Based on an Improved Resonant-Slot Coupled Cavity Chain Composite Right/Left-Handed Waveguide

Chen, Ying; Liao, Shaowei; Wei, Jie; Xu, Jianghua

doi:10.2528/pier10101905

Cited by 9 publications

(6 citation statements)

References 18 publications

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“…Composite right/left-handed (CRLH) transmission line (TL) structures have been studied extensively over the past decades due to their unusual properties such as supporting backward and forward wave propagations simultaneously and infinite wavelength propagation [1]. Numerous CRLH TL structures have been proposed so far, and they can be generally classified into two categories: planar structures [2][3][4][5][6][7][8][9][10] and three-dimensional (3D) waveguide structures [11][12][13][14]. Planar CRLH TLs have the advantages of low profile, low weight, low cost and easy fabrication, etc.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis on Propagation Characteristics of CRLH Waveguide Loaded With Double Ridge Corrugations

Yang¹,

Zhao²,

Zhang³

2017

PIER C

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The propagation characteristics of a composite right/left-handed (CRLH) waveguide loaded with air-filled double ridge corrugations (DRCs) is studied intensively in this paper. It is analyzed from the perspective of electromagnetic (EM) fields other than equivalent circuit method used by many other CRLH structures. First, the EM fields inside the CRLH waveguide are derived theoretically based on the EM fields in the rectangular waveguide and the DRC, as well as the boundary conditions on the interface, respectively. Then the propagation characteristics of the CRLH waveguide including the dispersion relation, surface current and transmitted power are determined according to the EM fields. The properties of the surface current are focused on for analyzing the application possibility of this CRLH waveguide to the leaky-wave antennas (LWAs). The transmitted power of the CRLH waveguide is calculated to demonstrate the high power capacitance of this CRLH waveguide. All the theoretical results are verified through full-wave simulations.

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Section: Introductionmentioning

confidence: 99%

Electromagnetic Analysis on Propagation Characteristics of CRLH Waveguide Loaded With Double Ridge Corrugations

Yang¹,

Zhao²,

Zhang³

2017

PIER C

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“…As we know, the composite right/left-handed (CRLH) transmission line is a typical structure that can support both the slow and fast waves, and it has attracted more and more attention in the recent years [14][15][16][17][18][19][20][21][22][23][24][25][26][27]. In contrast to the conventional transmission line that only shows the right-handed behavior, the CRLH transmission line exhibits both the left-handed and right-handed features, in other words, the propagation constant β of the fundamental mode in CRLH transmission line can be shifted from negative to positive continuously.…”

Section: Introductionmentioning

confidence: 99%

A New Insight into the Radiation Mechanism of Fast and Slow Traveling Waves

Wang

et al. 2011

Journal of Electromagnetic Waves and Applications

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In this paper, a new explanation on the radiation mechanisms of slow and fast traveling waves is presented. The effective radiation sections that give rise to the far-field radiation of the traveling-wave structure are found and studied for the cases of slow and fast waves, respectively. A composite right/left-handed transmission line that can support both of the slow and fast waves in left-and righthanded regions is employed as an example. Based on the uniform linesource assumption, an ideal model of traveling-wave current with the same dispersion behavior as that of the CRLH structure is proposed and used to demonstrate the radiations of slow and fast waves in physical sense. This new understanding of the radiation mechanism of traveling-wave structures is useful to the applications of travelingwave antennas.

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“…The effects of various mutual couplings, thickness of the waveguide walls, and waveguide proximity were taken into account in this analysis. Chen, Liao, and Wei [6], in 2010, presented an unequally spaced and excited resonant slottedwaveguide antenna array based on an improved resonant-slot coupled cavity chain composite right/left-handed waveguide. The proposed array produced a lower peak sidelobe level (PSLL) with comparison to the equally spaced but unequally excited resonant slotted-waveguide antenna array.…”

Section: Introductionmentioning

confidence: 99%

A High-Gain Broad-Band Waveguide Longitudinal Slot Array Antenna

Gayen¹,

Das²

2013

PIER C

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This paper presents method of moments based analysis of high-gain broad-band waveguide broad-wall longitudinal slot array antenna. Initially a basic two-element slot array antenna has been analyzed, and corresponding scattering parameter data have been obtained. The theoretical data have been compared with experimental data and Ansoft HFSS's simulated data to validate the proposed method. The excellent agreement obtained between the results validates the analysis. After validating the methodology, attempts have been made to design a broad-band high-gain slot array antenna. An 18-element slot array antenna has been designed, fabricated and tested. The fabricated antenna provides a high gain over large band width.

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Unequally Spaced and Excited Resonant Slotted-Waveguide Antenna Array Based on an Improved Resonant-Slot Coupled Cavity Chain Composite Right/Left-Handed Waveguide

Cited by 9 publications

References 18 publications

Electromagnetic Analysis on Propagation Characteristics of CRLH Waveguide Loaded With Double Ridge Corrugations

Electromagnetic Analysis on Propagation Characteristics of CRLH Waveguide Loaded With Double Ridge Corrugations

A New Insight into the Radiation Mechanism of Fast and Slow Traveling Waves

A High-Gain Broad-Band Waveguide Longitudinal Slot Array Antenna

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