Title :
A novel technique for the analysis of dielectric height variations in microstrip circuits
Author :
Kouki, Ammar B. ; Khebir, Ahmed ; Bosisio, Renato G. ; Ghannouchi, Fadhel M.
Author_Institution :
Microwave Res. Lab., Ecole Polytech. de Montreal, Que., Canada
fDate :
1/1/1994 12:00:00 AM
Abstract :
This paper presents a technique based on the full-wave, two-dimensional spectral domain method and the distributed transmission line approach to analyze structures with a combination of conductor width and dielectric height variations. The technique is applied to a regular taper and the results are compared with existing models. A matched taper transition is then designed based on simultaneous variation of the conductor width and dielectric height such that their ratio is kept constant. The analysis of such tapers is carried out and compared to measured data. It is shown that significant reduction in the return loss can be achieved with such transitions over fairly wide, tunable frequency ranges
Keywords :
S-parameters; impedance matching; microstrip lines; spectral-domain analysis; transmission line theory; conductor width variation; dielectric height variations; distributed transmission line approach; full-wave two-dimensional spectral domain method; impedance profile; matched taper transition; microstrip circuits; regular taper; return loss reduction; scattering parameters; tunable frequency ranges; Computer aided manufacturing; Conductors; Dielectric measurements; Distributed parameter circuits; Frequency; Impedance; Integrated circuit measurements; Microstrip; Printed circuits; Tunable circuits and devices;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
