Browsing by Author "Liu, SP"

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Full-wave segmentation analysis of arbitrarily shaped planar circuit
(1997-09-01)
Liu, SP
;
Tzuang, CKC
;
電信工程研究所
;
Institute of Communications Engineering
This paper presents a novel full-wave segmentation method for analyzing a complex and large microwave planar circuit which is divided into several smaller segments with corresponding multiport network parameters, They are obtained by a full-wave space-domain integral-equation technique in connection to a proposed excitation model based on the equivalence principle, The integral equation is solved numerically by Galerkin's procedure resulting in the generalized scattering-matrix (GSM) descriptions of all the subcircuit segments. The combination of these GSM's yields an overall network characterization of the composite circuit, Rigorous convergence studies and extensive validity checks confirm the reliability and accuracy of the proposed method, The novel technique immediately demonstrates its obvious application for quantitative characterization of higher order modes associated with a microwave-circuit discontinuity problem, Finally, very good agreement is obtained in a comparative study of an arbitrary planar structure analyzed by our full-wave method with and without segmentation, respectively.
Full-wave segmentation analysis of arbitrarily shaped planar circuit
(1997-09-01)
Liu, SP
;
Tzuang, CKC
;
交大名義發表
;
電信工程研究所
;
National Chiao Tung University
This paper presents a novel full-wave segmentation method for analyzing a complex and large microwave planar circuit which is divided into several smaller segments with corresponding multiport network parameters, They are obtained by a full-wave space-domain integral-equation technique in connection to a proposed excitation model based on the equivalence principle, The integral equation is solved numerically by Galerkin's procedure resulting in the generalized scattering-matrix (GSM) descriptions of all the subcircuit segments. The combination of these GSM's yields an overall network characterization of the composite circuit, Rigorous convergence studies and extensive validity checks confirm the reliability and accuracy of the proposed method, The novel technique immediately demonstrates its obvious application for quantitative characterization of higher order modes associated with a microwave-circuit discontinuity problem, Finally, very good agreement is obtained in a comparative study of an arbitrary planar structure analyzed by our full-wave method with and without segmentation, respectively.
Scattering analyses of asymmetric conductor-backed CPW open-end discontinuity problem
(1997-05-01)
Liu, SP
;
Tzuang, CKC
;
交大名義發表
;
電信工程研究所
;
National Chiao Tung University
The space-domain integral equation method using the generalized scattering matrix description of microwave passive circuits is employed to investigate the mode conversion of a CBCPW open-end discontinuity with unequal side plane widths. The conversion into two additional dominant modes, the c-mode-like mode and the pi-mode-like mode, and into the transmitted microstrip mode from an incident CPW mode is studied against side plane width, degree of asymmetry, substrate thickness, and frequency. Theoretical results are in excellent agreement with experimental ones.