Article
On the Quasi-TEM and Full-Wave Approaches Applied to Coplanar Multistrip on Lossy Dielectric Layered Media
Author/s | Mesa Ledesma, Francisco Luis
Cano Gómez, Gabriel Medina Mena, Francisco Marqués Sillero, Ricardo Horno Montijano, Manuel |
Department | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo Universidad de Sevilla. Departamento de Física Aplicada III Universidad de Sevilla. Departamento de Física Aplicada I |
Publication Date | 1992 |
Deposit Date | 2020-07-20 |
Published in |
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Abstract | The characteristic parameters of coplanar multistrip lines embedded in multilayered lossless/lossy substrates are commonly computed by using either quasi-TEM or full-wave models. Several methods are provided in the literature ... The characteristic parameters of coplanar multistrip lines embedded in multilayered lossless/lossy substrates are commonly computed by using either quasi-TEM or full-wave models. Several methods are provided in the literature to deal with this type of structure. In this paper a comparative study of quasi-TEM and rigorous solutions is carried out in order to establish criteria for the validity of the quasi-TEM approach. Reliable quasi-TEM and full-wave numerical data have been properly generated by applying an enhanced spectral domain analysis. We conclude that the quasi-TEM model yields satisfactory results for many MIC and MMIC practical cases. However, significant errors arise when high conductivity substrates are involved in MMIC applications. A discussion about the computation of the dynamic modal characteristic impedance is also reported, showing how the insertion of the modal orthogonality can save computational effort in a lossy multiport system. |
Funding agencies | Dirección General de Investigación Científica y Técnica (DGICYT). España PB87-0798-C03-01 |
Project ID. | PB87-0798-C03-01 |
Citation | Mesa Ledesma, F.L., Cano Gómez, G., Medina Mena, F., Marqués Sillero, R. y Horno Montijano, M. (1992). On the Quasi-TEM and Full-Wave Approaches Applied to Coplanar Multistrip on Lossy Dielectric Layered Media. IEEE Transactions on Microwave Theory and Techniques, 40 (3), 524-531. |
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