A full-wave analysis of interdigital capacitors for planar integrated circuits

Author

Caratelli, Diego ; Cicchetti, Renato

Author_Institution

Dept. of Electron. Eng., Univ. of Rome "La Sapienza", Italy

Volume

39

Issue

3

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

1598

Lastpage

1601

Abstract

A finite-difference time-domain (FDTD) model has been developed to determine the circuital and electromagnetic compatibility performances of a large class of interdigital capacitors (IDCs). The model, based on a new conformal FDTD scheme, employs the free-space dyadic Green´s functions to analyze the field behavior near and far from the FDTD computational domain. Using the proposed model, various IDC structures have been analyzed and a frequency-independent equivalent circuit, which include surface and volume wave effects, has been introduced. A good agreement with numerical results already available in literature has been found.

Keywords

Green´s function methods; capacitors; electromagnetic compatibility; equivalent circuits; finite difference time-domain analysis; integrated circuit modelling; radiofrequency integrated circuits; EMC performance; MICs; MMICs; RFIC; UHF ICs; conformal FDTD scheme; electromagnetic compatibility; far-field evaluation; field behavior; finite-difference time-domain model; free-space dyadic Green´s functions; frequency-independent equivalent circuit; full-wave analysis; interdigital capacitors; near-field evaluation; planar integrated circuits; surface wave effects; volume wave effects; Capacitors; Dielectric losses; Electromagnetic compatibility; Electromagnetic modeling; Equivalent circuits; Finite difference methods; Frequency; Microwave integrated circuits; Permittivity; Time domain analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.810410

Filename

1198534