Measurement of symmetrical waveguide discontinuities using the eigenvalue approach
Abstract
The behavior of symmetrical 2port networks is usually described in terms of their scattering, impedance or admittance matrices. Since the entries of these matrices are linear combinations of their eigenvalues the latter quantities provide an alternative description of network parameters provided they can be readily measured. In the case of symmetrical 2port networks the eigenvectors necessary to establish the eigenvalues at any port correspond to either inphase or outofphase signals at each port. One simple eigenvalue test set is a magic tee with the network under test connected between the symmetrical Hplane ports and a simple input at either the H or Eplane ports. The paper includes some experimental results obtained on simple inductive posts, a capacitive iris and inclined resonant slots.
 Publication:

IEE Proceedings H: Microwaves Optics and Antennas
 Pub Date:
 April 1980
 Bibcode:
 1980IPMOA.127...74H
 Keywords:

 Eigenvalues;
 Electrical Impedance;
 Microwave Scattering;
 Network Analysis;
 Signal Measurement;
 Waveguides;
 Eigenvectors;
 Equivalent Circuits;
 Frequency Response;
 Matrices (Mathematics);
 Transmission Efficiency;
 Electronics and Electrical Engineering