On the realizability of the impedance matrix for lossy dielectric posts in a rectangular waveguide
- 1 April 1988
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 36 (4) , 763-765
- https://doi.org/10.1109/22.3584
Abstract
The equivalent T-network for some lossy dielectric posts in a rectangular waveguide is found to have a negative resistance in the parallel arm although the realizability conditions for the impedance matrix are strictly satisfied. Furthermore, the reactive part of the same impedance is found to be a monotonically decreasing function of frequency. These difficulties are overcome in the case of symmetrical post structures by using lattice networks. A simplified lattice network of lumped elements is developed to approximately realize the impedance matrix for resonant lossy post structures in the bandwidth.Keywords
This publication has 1 reference indexed in Scilit:
- Multiple Dielectric Posts in a Rectangular WaveguideIEEE Transactions on Microwave Theory and Techniques, 1986