Accession Number : AD0461318


Title :   INVESTIGATION OF MICROWAVE DIELECTRIC-RESONATOR FILTERS


Descriptive Note : Quarterly rept. no. 5, 1 Sep-30 Nov 1964


Corporate Author : RANTEC CORP CALABASAS CA


Personal Author(s) : Cohn, S B ; Torgow, E N


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/461318.pdf


Report Date : 30 Nov 1964


Pagination or Media Count : 39


Abstract : The use of dielectric resonators in band-stop filters is discussed. The most promising application is in TEM transmission-line structures. The coupling between a dielectric resonator and a propagating TEM line is studied. Formulas are derived which, to an accuracy adequate for most applications, predict the external Q (Qex) of the coupled resonator as a function of the resonator's parameters and its position in the transmissionline cross section. Application of the Qex formulas to band-stop filter design is investigated. A formula is presented expressing the required Qex values of the resonators in terms of the elements of a low-pass-prototype filter. Several band-stop filters were designed and tested. Agreement between measured and theoretical performance is excellent.


Descriptors :   *RESONATORS , *MICROWAVE FILTERS , MEASUREMENT , TEMPERATURE , STABILITY , DIELECTRICS , TITANIUM ALLOYS , DIOXIDES , COUPLING CIRCUITS , BANDPASS FILTERS , TRANSMISSION LINES , DIELECTRIC PROPERTIES , MATHEMATICAL ANALYSIS


Subject Categories : Electrical and Electronic Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE