Title :
Microstrip open-end discontinuity on a nonreciprocal ferrite substrate
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
fDate :
12/1/1994 12:00:00 AM
Abstract :
A full-wave analysis of the microstrip open-end discontinuity on a nonreciprocal ferrite substrate is presented. The moment method is employed to find the current distribution over a semiinfinite microstrip line. The possible asymmetry of the longitudinal current due to nonreciprocity is considered. The length extension due to the fringing field at the open end is found through a nonreciprocal transmission line analysis, In the analysis, the direction of the bias field is either transverse, longitudinal, or normal to the microstrip open end. The effects of the direction and the strength of the bias field are investigated. It is found that the direction of the bias, not its strength, has significant effect on the open-end discontinuity. Also, the asymmetry of the higher-order longitudinal transmission line current is found important in determining the excess length
Keywords :
current distribution; ferrite waveguides; method of moments; microstrip discontinuities; microwave integrated circuits; millimetre wave integrated circuits; bias field; current distribution; excess length; ferrimagnetic MICs; fringing field; full-wave analysis; higher-order longitudinal transmission line current; length extension; longitudinal current; microstrip open-end discontinuity; microwave ferrite integrated circuits; moment method; nonreciprocal ferrite substrate; nonreciprocal transmission line analysis; semiinfinite microstrip line; Ferrites; Frequency; Magnetic analysis; Magnetic materials; Magnetostatic waves; Microstrip; Moment methods; Substrates; Transmission line discontinuities; Transmission lines;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
