Analysis and modeling of microstrip antennas with electromagnetically coupled feeds

A rectangular microstrip patch which is excited by an electromagnetically coupled microstripline is analyzed and modeled. Moment method analysis is employed to obtain approximate representations for the patch and feedline current distributions, and input impedances are found by examining the current standing wave pattern along a portion of the feedline where the fields are quasi-transverse electromagnetic (quasi-TEM). Through this procedure, the computed input impedances are uniquely and meaningfully defined and are essentially independent of the properties of any connector or transition which may be utilized to excite the feedline. Thus, it is unnecessary to theoretically account for the presence of such connectors or transitions when performing input impedance calculations. In the analytical model, a fictitious excitation device which is simple to evaluate in the numerical analysis is used in lieu of a connector to launch an incident wave along the microstripline.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Oberhart, Michael Lyle

• Engineering, Electronics and Electrical

Statement dc:rights

• Copyright 1990 Oberhart, Michael Lyle

Language dc:language

eng

Identifier

AAI9026284
(UMI)AAI9026284

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/23024