title: Method of measuring loaded Q-factor of single-ended cavity resonators using reflection bridge.
abstract: A bridge method of determining the loaded Q-factor and coupling coefficient of single-ended cavity resonators is described. The measuring system consists of a hybrid-T or ''magic T'' bridge with one of the collinear arms terminated by the cavity and the other by a precision attenuator followed by a variable precision short. The experimental procedure essentially measures the reflection coefficient of a cavity resonator as a function of frequency by balancing the bridge, using an oscillator with variable frequency amplitude modulation as the source.
authors.affiliation: Institute of Radio Physics and Electronics, University College of Technology, 92 Acharya Prafulla Chandra Road, Calcutta, India.
authors.forename: G
authors.initials: G
authors.lastname: Ghosh
authors.forename: S
authors.initials: S
authors.lastname: Sen
authors.forename: D
authors.initials: D
authors.lastname: Dasgupta
authors.forename: P K
authors.initials: PK
authors.lastname: Saha