Accession Number : AD0651798

Title :   MODE CONVERSION METHODS FOR STRIP TRANSMISSION LINE NON-RECIPROCAL DEVICES.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Lambrecht,Donald W.

Report Date : MAR 1967

Pagination or Media Count : 64

Abstract : The electromagnetic field requirements for obtaining non-reciprocity with ferrites in TEM-mode strip transmission lines are briefly discussed. The devices discussed use electron spin resonance for obtaining non-reciprocity. The requirement for circular polarization is pointed out and three simple linear-to-circular polarization conversion methods are developed. Test of the three circuits is described and the results from 8 to 12.4Gc. are presented in detail. It is concluded that moderate isolation is attainable over at least octave bandwidths and good isolation (greater than 20 db.) is attainable over at least 10-percent bandwidths. Recommendations for future investigations are included. (Author)

Descriptors :   (*TRANSMISSION LINES, FERROMAGNETIC MATERIALS), MICROELECTRONICS, ELECTRON PARAMAGNETIC RESONANCE, POLARIZATION, MICROWAVE EQUIPMENT, CIRCUITS, SPHERES

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE