Unified solution of various dielectric-loaded ridge waveguides with a mixed spectral-domain method

Ng, K.T.; Chan, Chi Hou

doi:10.1109/22.44125

Cited by 15 publications

(8 citation statements)

References 18 publications

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“…Ng and Chan studied dielectric-loaded ridge waveguides by mixed spectral-domain method [5]. Helszajn systematically investigated the dielectric loaded rectangular-and circular-ridge waveguides by numerical calculations and experimental measurements [6].…”

Section: Introductionmentioning

confidence: 99%

“…The narrow bandwidth is a major disadvantage of patch antennas for several practical applications. Several approaches have been made to improve the bandwidth of the single-layer patch antennas, such as probe-fed U-slot patch antennas [3,4], a pair of double bent slots [5], L-probe/L-strip coupled feed patch antenna [6], and E-shaped patch antennas [7][8][9][10][11]. In the present study, an attempt has been made to enhance the bandwidth of a probe-fed patch antenna on a thick air/foam substrate by introducing two parallel notches at one of the radiating edges of a rectangular patch antenna and positioning it symmetrically with respect to the feed point.…”

Section: Introductionmentioning

confidence: 99%

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Transmission characteristics of dielectric loaded double trapezoidal‐ridge waveguide

2006

Micro & Optical Tech Letters

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transmission characteristics of dielectric loaded double trapezoidal‐ridge waveguide

2006

Micro & Optical Tech Letters

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“…It is clear that the results of the proposed method correspond to reference [6] very well, as shown in table 1. The electrical field is distributed with a concentration in ridge regions.…”

Section: Numerical Results and Discussionmentioning

confidence: 53%

“…Sun and Balianis studied quadruple-ridged square waveguides (QRSW) by MFIE [5]. Mai Lu studied dielectric loaded double trapezoidal-ridge waveguide by finite element method [6]. Helszajn systematically investigated the dielectric loaded square waveguide by numerical calculations [7].…”

Section: Introductionmentioning

confidence: 99%

Transmission characteristics of dielectric loaded asymmetric V ridge waveguide

Li¹,

Yang²,

Ma³

et al. 2010

2010 International Symposium on Signals, Systems and Electronics

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A kind of asymmetric V ridge waveguide is presented. Variations of the cut-off wavelength, single-mode bandwidth with the ridge dimensions and the ridge position for different values of dielectric constant are investigated in detail. The field patterns of the dominant are presented. The correctness of the numerical results is verified. The results provide an extension to the existing design data for ridge waveguide and considered helpful in practical applications.

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“…This analysis has met the requirement of short computation time. In 1989, Ng and Chan [17] used a mixed spectral domain method for the study of a loaded-ridged waveguide. In 1991, Omar and Schunemann [18] applied the generalized spectral domain technique to the analysis of rectangular waveguide with rectangular and circular metal inserts.…”

mentioning

confidence: 99%

Approximation by Gegenbauer polynomials in the study of a rectangular ridged waveguide. Application to the analysis of a waveguide septum polarizer

Boukli-Hacene¹,

Sombrin

Papiernik

2003

Int J Numerical Modelling

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SUMMARYSeveral methods have been used for the study of a ridged waveguide. In this paper, we propose the use of Gegenbauer polynomials in the decomposition of the electromagnetic field near the edges of the septum, for the computation of cut-off frequencies and electromagnetic TE and TM fields in the ridged waveguide sections. This study is applied to analyse a waveguide septum polarizer that was experimentally studied by M.H. CHEN and G.N. TSANDOULAS en 1972. The useful performances of the polarizer (ellipticity ratio, circular polarization ratio) are computed from the geometrical dimensions of the waveguide and the septum. The method is based on the computation of discontinuities between waveguides with different ridge height by mode matching and the cascading of scattering parameter matrices representing the discontinuities and the waveguide lengths, resulting in the global S matrix of the polarizer. The ridged waveguide, initially described by Ramo and Whinnery [1], has found several applications in microwave devices and circuits, requiring a wide free range, since its cut-off frequency of the fundamental mode and characteristic impedance are lower than that of

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Unified solution of various dielectric-loaded ridge waveguides with a mixed spectral-domain method

Cited by 15 publications

References 18 publications

Transmission characteristics of dielectric loaded double trapezoidal‐ridge waveguide

Transmission characteristics of dielectric loaded double trapezoidal‐ridge waveguide

Transmission characteristics of dielectric loaded asymmetric V ridge waveguide

Approximation by Gegenbauer polynomials in the study of a rectangular ridged waveguide. Application to the analysis of a waveguide septum polarizer

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