Circular-pad via model based on cavity field analysis

Author

Kouzaev, G.A. ; Nikolova, N.K. ; Deen, M.J.

Author_Institution

Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada

Volume

13

Issue

11

fYear

2003

Firstpage

481

Lastpage

483

Abstract

An equivalent circuit model of a circular-pad grounding via is proposed based on cavity modal analysis. The modes of the via are derived analytically. Each mode is represented by an equivalent circuit taking into account ohmic losses, as well as losses due to spatial and surface wave radiation. It is shown that the degradation of grounding via characteristics at high frequencies is caused by the multimode effects and radiation. The accuracy of the proposed semi-analytical via model is comparable with that of full-wave analysis up to 75 GHz. It is fast and is easily incorporated in high-frequency circuit simulators.

Keywords

antenna theory; cavity resonators; circuit simulation; equivalent circuits; integrated circuit interconnections; integrated circuit modelling; losses; microstrip antennas; modal analysis; 20 to 75 GHz; cavity field analysis; cavity modal analysis; circular-pad grounding via; circular-pad via model; circular-patch microstrip antennas; equivalent circuit model; full-wave analysis; grounding via characteristics degradation; high-frequency circuit simulators; multimode effects; ohmic losses; semi-analytical via model; spatial radiation losses; surface wave radiation losses; Analytical models; Eigenvalues and eigenfunctions; Equations; Equivalent circuits; Grounding; Inductors; Magnetic resonance; Microstrip antennas; Modal analysis; Resonant frequency;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2003.818519

Filename

1243538