Finding Resonant Frequencies for High Loss Dielectrics in Cylindrical Cavities

Peñaranda Foix Felipe Laureano, Catalá Civera José Manuel, Canós Marín Antoni Josep, García Baños Beatriz

2015

International Journal of RF and Microwave Computer-Aided Engineering

This article proposes the use of argument principle method (APM) to find all complex resonant frequencies in a three layer cylindrical cavity. APM guarantees that no root is lost and frequencies can be associated with the resonant mode. The roots can be used to find permittivity of a material inside a cavity