Title :
Adjustment of In-Phase Mode in Circulators Using Turnstile Junctions
Author :
Helszajn, J. ; Sharp, J.
fDate :
4/1/1985 12:00:00 AM
Abstract :
The adjustment of the counter-rotating modes of waveguide circulators using weakly magnetized turnstile junctions is fairly well understood, but some uncertainty about the definition of the in-phase mode still remains. The purpose of this paper is to remedy this situation by experimentally evaluating the in-phase eigenvalue s0 for different filling factors and radial wavenumbers of the in-phase resonator. This is done by using the unitary condition to derive four possible relationships between the in-phase and counter-rotating eigenvalues s0 and s1, and the scattering variable S11, and using one or another of them to form s0. The situation for which s0 is in anti-phase to s1 corresporrds to the first classic circulation condition of this class of device and is also derived.
Keywords :
Boundary conditions; Circuits; Circulators; Electrons; Filling; Microstrip; Microwave devices; Microwave theory and techniques; Semiconductor waveguides; Waveguide junctions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1985.1133088