Accession Number : ADA325074

Title :   Frequency and Transient Characteristics of MMIC Transmission Lines, Circuits and Antennas.

Descriptive Note : Final progress rept. 1 Jul 92-31 Dec 96,

Corporate Author : ARIZONA STATE UNIV TEMPE TELECOMMUNICATIONS RESEARCH CENTER

Personal Author(s) : Balanis, Constantine A. ; Polycarpou, Anastasis C. ; Park, Seong-Ook ; Gilb, James P. ; Lyons, Michael R.

PDF Url : ADA325074

Report Date : 31 MAR 1997

Pagination or Media Count : 152

Abstract : The frequency characteristics of two dimensional planar MMIC transmission lines and circuits, three dimensional electronic packaging circuits, and cavity backed aperture and microstrip antennas loaded with dielectric and/or magnetized ferrite materials were analyzed using advanced full wave analytical and numerical techniques, such as the Finite Element Method (FEM) and Method of Moments / Spectral Domain Approach (MoM/SDA). For the two dimensional planar transmission lines the propagation characteristics examined included the effective dielectric constant, attenuation constant, and characteristic impedance. Anisotropic materials, such as sapphires, PTFE cloth, and ferrites were also modeled and analyzed. Substrate compensation was used in multilayer, multiconductor lines to minimize coupling and pulse distortion. A three dimensional vector finite element code was developed to simulate practical electronic packaging circuits, including microstrip / coplanar discontinuities, spiral inductors, filters, conducting vias, etc. A hybrid FEM/MoM approach was used in the analysis and design of cavity backed aperture and microstrip antennas loaded with dielectric and/or magnetized ferrite materials. The magnetization of the ferrite was used to tune the cavity over an extended bandwidth. In addition, analytical techniques were developed to evaluate efficiently and accurately the asymptotic matrix elements using the MoM/SDA. The computational efficiency was improved, in some cases, by a factor of 50 compared to conventional methods.

Descriptors :   *INTEGRATED CIRCUITS, *STRIP TRANSMISSION LINES, *MONOLITHIC STRUCTURES(ELECTRONICS), *MICROWAVE ANTENNAS, TRANSIENTS, FINITE ELEMENT ANALYSIS, SAPPHIRE, DIELECTRIC PROPERTIES, ANISOTROPY, PLANAR STRUCTURES, PACKAGING, METHOD OF MOMENTS, FERRITES.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE