Computation of microstrip S-parameters using a CG-FFT scheme

Several open microstrip structures have been analyzed by using the conjugate gradient fast Fourier transform (CGFFT) method to solve the electric field integral equation (EFIE). The analysis of the microstrip structure provides equivalent electric currents on the conducting patches. Extensive comput...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1994-02, Vol.42 (2), p.234-240
Main Authors: Basterrechea, J., Catedra, M.F.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Electric, optical and optoelectronic circuits
Electronics
Exact sciences and technology
Fast Fourier transforms
Feeds
Integral equations
Magnetic analysis
Microstrip antennas
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Moment methods
Near-field radiation pattern
Nonhomogeneous media
Scattering parameters
Surface waves
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Summary:Several open microstrip structures have been analyzed by using the conjugate gradient fast Fourier transform (CGFFT) method to solve the electric field integral equation (EFIE). The analysis of the microstrip structure provides equivalent electric currents on the conducting patches. Extensive computation is performed in the spectral domain. Windowing techniques are used to improve the accuracy of the method. New models for the microstrip feed and load have been developed in combination with the CGFFT method. Results for the S-parameters are compared with the results of other methods and with measurements. The method appears to be accurate and computationally efficient.< >
ISSN:0018-9480
1557-9670
DOI:10.1109/22.275253