Equivalent Circuit Parameters of Microstrip Step Change in Width and Cross Junctions (Short Papers)

Gopinath, A.; Thomson, A.F.; Stephenson, I.M.

doi:10.1109/tmtt.1976.1128795

Cited by 45 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After substituting the expanded current expression (19) into ( l ) , the method of moments can be applied to transform this integral equation into a matrix equation. The testing functions in the moment method procedure are chosen to be subdomain functions only.…”

Section: The Methods Of Moments and Matrix Formulationmentioning

confidence: 99%

“…The corresponding scattering parameters (shown in Figs. [17][18][19][20] are investigated as a function of position of the microstrip feed line at the frequency of 20 GHz. It is noted that the scattering parameters demonstrated in the figures are normalized by the characteristic impedance of each propagating mode such that the summation of the magnitude squared of each scattering parameter is close to unity, but not exactly equal to unity because of radiation and surface-wave losses.…”

Section: Basic and Shaped T-junctionsmentioning

confidence: 99%

See 1 more Smart Citation

Full‐wave spectral‐domain analysis for open microstrip discontinuities of arbitrary shape including radiation and surface‐wave losses (invited paper)

Horng

Alexopoulos

et al. 1992

Int. J. Microw. Mill.‐Wave Comput.‐Aided Eng.

View full text Add to dashboard Cite

This article is a survey of the theoretical background for full-wave spectral-domain analysis of open microstrip discontinuities of arbitrary shape. The spectral-domain dyadic Green's function, which takes into account all the physical effects, such as radiation and surface waves, is used to formulate an electric field integral equation. The method of moments is then employed to find the current distribution on the microstrips, and subsequently, the scattering parameters of the junctions. Since all field components can be expressed in terms of the dyadic Green's function and the current distribution, the losses due to both radiation and surface waves are further determined through a rigorous Poynting vector analysis. To model the discontinuities of arbitrary shape, both rectangular and triangular subdomain functions are used as the current expansion functions in the moment method procedure. In addition, the semi-infinite traveling wave functions are applied to simulate the feeding structure and isolate individual junction effects. Several examples are demonstrated to illustrate the utility of different techniques in this analysis. Comparison of some numerical results with available experimental data shows excellent agreement. Finally, this approach is most natural for the characterization of 3-D integrated circuits and the design of printed antennas including excitation circuit effects. C 1992 John Wileg & Sons, Inc.

show abstract

Section: The Methods Of Moments and Matrix Formulationmentioning

confidence: 99%

Section: Basic and Shaped T-junctionsmentioning

confidence: 99%

Full‐wave spectral‐domain analysis for open microstrip discontinuities of arbitrary shape including radiation and surface‐wave losses (invited paper)

Horng

Alexopoulos

et al. 1992

Int. J. Microw. Mill.‐Wave Comput.‐Aided Eng.

View full text Add to dashboard Cite

show abstract

“…The ABCD matrix of the equivalent T circuit of the step discontinuity (with two series inductors L 1, i and L 2, i and a shunt capacitor C i as shown in Fig. 2) is as given [5–11]: …”

Section: The Filter Design Proceduresmentioning

confidence: 99%

“…The equivalent T circuits of line sections and step discontinuities are usually made of two series L and one shunt C components (as in Figs. 1 and 2) [2–11]. Filter designs by the Butterworth, Chebyshev, and elliptic methods usually ignore the step discontinuity effects and only use the L and C components for the equivalent circuit of the high and low impedance (namely narrow and wide strip) lines [2, 3].…”

Section: Introductionmentioning

confidence: 99%

Impedance matching and spurious‐response suppression in stepped‐impedance low pass filters

Oraizi

Seyyed‐Esfahlan

2011

Micro & Optical Tech Letters

View full text Add to dashboard Cite

In this article, the method of least squares is used to design a stepped-impedance low pass filter with arbitrary specifications on the pass, transition, and stop bands, having different input and output impedances. The equivalent circuits of the line sections and step discontinuities are used (with appropriate dispersion relations) to determine the filter transmission matrix and the scattering parameters, which are then used to construct an error function. Its minimization is performed by the combination of particle swarm optimization and conjugate gradient methods. The conversion of lumped filter designs, by Butterworth, Chebyshev, and elliptic methods to the equivalent microstrip filters (namely conversion of L and C components to strip lines) may be difficult to realize. The proposed method of least squares procedure leads to the design characteristics having sharper transition bands and a wider pass band. The rectangular split ring resonators, as patterned ground plane, will remove the spurious responses in the stop band and actually increase the stop bandwidth. The results obtained by full-wave simulation softwares, fabrication, and measurements verify the proposed method for low pass stepped-impedance filter design.ABSTRACT: The self-consistent thermal-electrical model of the ZnO light-emitting diode is presented. It may be used to determine the band structure of the diode, its quasi-Fermi levels and two-dimensional profiles of temperature, potential, carrier concentrations, and current densities. The model may also enable its structure optimization for various possible applications.

show abstract

“…The correction in tinelengths due to step discontinuity is calculated using the equivalent circuit of step junction given by Gopinath et a/. (3]. A ,\ 1 /4 open stub is used for rf isolation.…”

Section: Biasi Ng Circuitmentioning

confidence: 99%

Low Loss Pin Diode Phase Shifter for an Active Array Element

Kumar¹,

Pandharipande

Sarap

1985

IETE Technical Review

View full text Add to dashboard Cite

Equivalent Circuit Parameters of Microstrip Step Change in Width and Cross Junctions (Short Papers)

Cited by 45 publications

References 4 publications

Full‐wave spectral‐domain analysis for open microstrip discontinuities of arbitrary shape including radiation and surface‐wave losses (invited paper)

Full‐wave spectral‐domain analysis for open microstrip discontinuities of arbitrary shape including radiation and surface‐wave losses (invited paper)

Impedance matching and spurious‐response suppression in stepped‐impedance low pass filters

Low Loss Pin Diode Phase Shifter for an Active Array Element

Contact Info

Product

Resources

About