G. Faby et K. Schunemann, Q-factor measurements of open resonators in the millimeter-wave range including coupling losses, IEEE INSTR, 48(3), 1999, pp. 688-692
Citations number
11
Categorie Soggetti
Instrumentation & Measurement
Journal title
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
The unloaded quality factor as well as the coupling coefficient of open res
onators are determined by evaluating measured complex reflection coefficien
ts. The cavity is described by an equivalent circuit, the parameters of thi
s circuit are calculated by means of a least-square fit of the simulated to
the measured reflection coefficients. The solution is obtained using the H
ouseholder-algorithm, which promises very fast and stable computation. This
approach is capable of evaluating quality-factor measurements for each typ
e of resonator, even with losses in the coupling aperture. Its validity is
illustrated by measurements in the cm- and mm-wave range.