Conductor disc used to suppress spurious mode and enhance electric coupling in a dielectric loaded combline resonator

[摘要] The effects of conductor disc in a dielectric loaded combline resonator on its spurious performance, unloaded quality factor (Qu), and coupling coefficients are analysed using a commercial electromagnetic software package CST Microwave Studio (CST MWS). The disc improves the spurious free band but simultaneously deteriorates the Qu. The presence of the disc substantially improves the electric coupling by a factor of 1.891 for an aperture opening of 12 mm, while it has insignificant effect on the magnetic coupling.

[发布机构] Department of Basic Sciences, Botswana College of Agriculture, Private Bag 0027, Gaborone, Botswana^1;Department of Electrical, Electronic, Computer and Telecommunication Engineering, Botswana International University of Science and Technology, Private Bag 0016, Phalapye, Botswana^2

[关键词] Combline resonators;Coupling coefficient;CST microwave studio;Dielectric loaded;Electric coupling;Electromagnetic software;Suppress spurious;Unloaded quality factors