Title :
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
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;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.818519
