Modelling of microstrip open-end and gap discontinuities using an ameliorated moments method

Djahli, F.; Mayouf, A.; Dekik, M.

doi:10.1080/002072199133616

Cited by 7 publications

(8 citation statements)

References 15 publications

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“…This matrix equation has been resolved using the least-square procedure to obtain the optimum value of k s in order that the system, expressed by (11), is closest to zero (10 À39 in our approach) [6][7][8]. The complex effective propagation constant k s can be expressed by…”

Section: Full-wave Modelling Of Microstrip Line and Its Sensitivitiesmentioning

confidence: 99%

“…the r-dependent basis for the current density g i ðrÞ chosen as a piecewise sinusoidal function given in References [6,19]. N p is the number of piecewise sinusoidal modes.…”

Section: Microstrip Modellingmentioning

confidence: 99%

“…Such a rigorous analysis is very often based on an integral equation formulation, typically solved using the method of moments [6][7][8][9][10][11][12][13][14][15][16][17][18]. Some of these analyses use a transition matrix to incorporate the effect of laminated ground plane into integral equation formulation derived based on the electric surface current on the metal surface [2].…”

Section: Introductionmentioning

confidence: 99%

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Full‐wave modelling of microstrip line and its sensitivities on lossy multilayer dielectric substrate and superstrate with laminated ground plane

Mayouf¹,

Djahli

Mayouf

2002

Int J Numerical Modelling

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SUMMARYThis paper presents a new formulation useful for modelling multilayered microstrip and its geometrical sensitivities with laminated ground plane. New integral equations are formulated, in the spectral domain, using the exact dyadic Green's function of bianisotropic planar media. We have applied a dynamic twodimensional least-square algorithm as an optimization procedure. Obtained results agree well with those of other approaches.

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Section: Full-wave Modelling Of Microstrip Line and Its Sensitivitiesmentioning

confidence: 99%

“…the r-dependent basis for the current density g i ðrÞ chosen as a piecewise sinusoidal function given in References [6,19]. N p is the number of piecewise sinusoidal modes.…”

Section: Microstrip Modellingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Full‐wave modelling of microstrip line and its sensitivities on lossy multilayer dielectric substrate and superstrate with laminated ground plane

Mayouf¹,

Djahli

Mayouf

2002

Int J Numerical Modelling

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“…The study of the propagation in the dielectric slab (of thickness 2h with permittivity e r and permeability m 0 ) and the application of parity and imparity properties on electromagnetic fields allow the extraction of the propagation characteristics, in the grounded dielectric slab of thickness h; where only even TM and odd TE modes can propagate [1][2][3][4][5].…”

Section: Theoretical Modelmentioning

confidence: 99%

“…In order to calculate the impedance matrix and the voltage vector elements in the grounded dielectric slab, we need the electrical field due to the horizontal electrical current element dI [3,5]. The electrical field can be expressed using a three-dimensional dyadic Green's open end discontinuity and its equivalent circuit; (c) step discontinuity and its equivalent circuit; (d) bend discontinuity and its equivalent circuit; (e) T-junction discontinuity and its equivalent circuit; (f) cross-junction discontinuity and its equivalent circuit; and (g) stub and bent-stub discontinuities of microstrip line.…”

Section: Theoretical Modelmentioning

confidence: 99%

A generalized CAD model for the full‐wave modelling of microstrip line and its regular and irregular discontinuities

Mayouf

Djahli

2006

Int J Numerical Modelling

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SUMMARYIn this paper we present a new theoretical model for the modelling of the microstrip line as well as two types of discontinuities: regular (open end, step, bend and T-and cross-junctions) and irregular (stub and bent-stub). The two-dimensional exact dyadic Green function of a grounded dielectric slab has been used with the Galerkin's technique. The subdivision of the discontinuity in a network of juxtaposed unit cells, characterized by their own longitudinal and transversal current distributions, allowed the treatment of a large class of irregular discontinuities in addition to the regular discontinuities. The obtained results have been commented and compared with those of different approaches and with experimental results where a good concordance has been observed.

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Recessed ground microstrip line at 60 GHz and its application of band‐pass filter

Jaiswal

Abegaonkar

Koul

2019

Int J RF Microw Comput Aided Eng

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The effect of finite-size recessed ground on characteristic features of a microstrip transmission line is investigated and verified experimentally on alumina substrate of height 0.127 mm with ε r = 9.8 at 60 GHz. A measured characteristic impedance of 238 Ω, effective dielectric constant of 3.09, and attenuation constant of 3.4 Np/m is achieved by using a recessed ground of dimensions (width × depth) 4.5 mm × 0.95 mm, below a 50-Ω (on conventional ground plane) microstrip line.The effect of recessed ground on lumped equivalent circuit elements of microstrip line discontinuities including series-gap, open-end, and step discontinuities is also studied. To show the usefulness of recessed ground microstrip line, a prototype of fifth-order Chebyshev-type recessed ground end-coupled band-pass filter is designed and fabricated at 60 GHz. The filter exhibits measured insertion loss lower than 2.2 dB and return loss better than 13 dB over 3-dB passband of 6% centered at 60 GHz. The measured results show good consistency with simulated results and confirm the usefulness of recessed ground plane microstrip line. K E Y W O R D S

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Modelling of microstrip open-end and gap discontinuities using an ameliorated moments method

Cited by 7 publications

References 15 publications

Full‐wave modelling of microstrip line and its sensitivities on lossy multilayer dielectric substrate and superstrate with laminated ground plane

Full‐wave modelling of microstrip line and its sensitivities on lossy multilayer dielectric substrate and superstrate with laminated ground plane

A generalized CAD model for the full‐wave modelling of microstrip line and its regular and irregular discontinuities

Recessed ground microstrip line at 60 GHz and its application of band‐pass filter

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