Theoretical and experimental characterization of nonsymmetrically shielded coplanar waveguides for millimeter-wave circuits

Alessandri, F.; Goebel, U.; Melai, F.; Sorrentino, R.

doi:10.1109/22.44117

Cited by 20 publications

(6 citation statements)

References 11 publications

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“…To obtain the solutions for the propagation constant ( y ) in the matrix equation (16), one needs to truncate the matrix equation by using a finite number of eigenfunction expansion terms in each region. As pointed out by various authors [51, [26], [27], [29], [30], using basically the modematching method in different problems, the relative convergence criterion should be satisfied to obtain (1) good field matching at metal-dielectric interfaces [51, [261, [271; (2) fast converged susceptance values for iris-type discontinuity problems [29]; and (3) an accurate solution for the reflection coefficient in microstrip step-discontinuity problems [30], to name a few. It is plausible to speculate that the proposed mixed potential mode-matching method may encounter similar convergence problems.…”

Section: Convergence Study Of the Proposed Full-wave Methodsmentioning

confidence: 85%

“…depicts the setup of the corresponding coefficients of the eigenfunction expansions in subsections 11-A and 11-B. Although the coefficient elimination process in the classical [24] and the modified mode-matching methods [25], [26] are well known, the proposed mixed potentials mode-matching formulation requires special attention. In view of Fig.…”

Section: Boundary Conditions In the Horizontal Planementioning

confidence: 99%

“…The efforts necessary to formulate the proposed mixed potential mode-matching method is then greatly reduced because few boundary conditions are left to be met. Note that in the conventional [12], [24] and modified [25], [26] mode-matching methods, the waveguides under analysis consist of layered substrates and the Hertzian potentials employed are in one direction only.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A full-wave mixed potential mode-matching method for the analysis of planar or quasi-planar transmission lines

Tzuang

Tseng

1991

IEEE Trans. Microwave Theory Techn.

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A newly proposed and tested full-wave mixed potential mode-matching method is presented for the analysis of planar and/or quasi-planar transmission lines. The transmission lines under investigation consist of layered (stratified) and nonlayered dielectric substrates and metal strips of finite thickness. The y-directed hybrid TE and TM Hertzian potentials, perpendicular to the interfaces between each layered region, are employed in the layered regions. The nonlayered regions, which consist of dielectric step discontinuities that destroy the layered configuration in the horizontal plane, utilize the x -directed hybrid TE and TM Hertzian potentials parallel to the horizontal plane. As a direct result, the full-wave formulation of the transmission line problem becomes systematic and easy to handle. Extensive analyses of a particular case study show that the relative convergence criterion needs to be satisfied to obtain accurate electromagnetic field solutions. The theoretical results obtained here are in very good agreement with the published data for various transmission line structures, which are the special limiting cases of the particular case study. The applications of the new formulation to the proximity effects of microstrip and Microslab' lines are also illustrated by examples. Fig. 1. A generalized planar and/or quasi-planar transmission lines structure for microwave, millimeter-wave, and optoelectronic applica-

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Section: Convergence Study Of the Proposed Full-wave Methodsmentioning

confidence: 85%

Section: Boundary Conditions In the Horizontal Planementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A full-wave mixed potential mode-matching method for the analysis of planar or quasi-planar transmission lines

Tzuang

Tseng

1991

IEEE Trans. Microwave Theory Techn.

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“…Most of the numerical and analytical methods developed to analyze microstrip lines have been adapted to handle a variety of CPW configurations. Relaxation methods [11,12], the integral equation technique [ 131, the spectral domain method [14,15], the network analytical method [16], the point matching method [17], the variational method [18][19][20][21], the time-domain finite-difference method [22], the generalized transverse resonance technique [23], the hybrid conformal mapping-finite element method [24-261, the boundary elements method [27], and the method of lines [28] are several examples of techniques which have been applied to CPWs analysis. Some use quasi-TEM approximation, and others are i=N,-1 i=N,-2 based on full-wave approaches.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐analytical static solution for the generalized boxed coplanar waveguide

Drake

Medina²,

Horno

1994

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

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A quasi-analytical method for computing the quasi-static-TEM parameters of the generalized coplanar waveguide (GCPW) is reported. The structure is assumed to be enclosed in a rectangular frame and embedded in a layered medium. Essentially, the method is an analytically enhanced spectral domain formulation. Its application leads to virtually exact results in very short CPU times, making it suitable for CAD purposes. Although the method is somewhat more time consuming than conformal mapping approaches, it is a useful alternative because of its exactness and ability to deal with multilayer structures. 0 1994 John Wiley & Sons, Inc.

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“…The proposed approach was tested calculating the dispersion of a NSSS (Non-symmetrical Suspended Substrate Stripline) studied using the transverse resonance method and experimentally verified in [9]. Our analysis was madc using a Ay variable step mesh of the kind described in fig.…”

Section: Resultsmentioning

confidence: 99%

An improved 2D-FDTD method for TWFET bandwidth characterization

Angiolini

D’Inzeo

Rota

Proceedings of 1995 IEEE MTT-S International Microwave Symposium

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A new 2D-FDTD method has been proposed to analyze the dispersion diagram of planar circuits. Traveling wave field effect transistor (TWFET) is a solid state device designed to amplify signals over a wide bandwidth. An analysis of the passive behavior of this device has been performed using mode-matching technique and assuming that the passive structure performances are affected only by the width of the T bar of the gate electrode. To verify such hypothesis and to determine the cut-off frequency of the higher order modes that limits its bandwidth, we have simplified the 2D-FDTD method with a particular normalization, that permits the analysis of the case β=0. The proposed approach was tested calculating the dispersion for some known structures and it has been used in the TWFET characterizatio

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Theoretical and experimental characterization of nonsymmetrically shielded coplanar waveguides for millimeter-wave circuits

Cited by 20 publications

References 11 publications

A full-wave mixed potential mode-matching method for the analysis of planar or quasi-planar transmission lines

A full-wave mixed potential mode-matching method for the analysis of planar or quasi-planar transmission lines

Quasi‐analytical static solution for the generalized boxed coplanar waveguide

An improved 2D-FDTD method for TWFET bandwidth characterization

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