Title :
Piezo-tuned microwave filters based on dielectric resonators
Author :
Poplavko, Y.M. ; Molchanov, V.I. ; Prokopenko, Y.V. ; Cho, N. -I ; You, Y.S.
Author_Institution :
Nat. Tech. Univ. of Ukraine, Kiev, Ukraine
Abstract :
The functional possibilities of microwave filters based on dielectric resonators (DR) are extended by the control of their central frequency (f/sub 0/) and attenuation-frequency characteristic (AFC). With this purpose, frequency tunable high Q-factor DRs were used. Commonly accepted designs of DR-filters are unsuitable for such a control owing to the distortion of the AFC during controlling. Hence a new design of DR-based fitters is proposed, in which frequency is controlled with the undistorted shape of AFC. Based on these concepts, simple bandpass and bandstop frequency tuned filters were realized.
Keywords :
Q-factor; band-pass filters; band-stop filters; dielectric resonator filters; frequency control; microwave filters; passive filters; tuning; DR filters; attenuation-frequency characteristic control; bandpass tuned filters; bandstop tuned filters; central frequency control; dielectric resonators; frequency tunable DR; high Q-factor DR; piezo-tuned microwave filters; Automatic frequency control; Band pass filters; Communication system control; Costs; Dielectrics; Microwave filters; Mirrors; Q factor; Resonance; Resonator filters;
Conference_Titel :
Microwave Conference, 1999. Microwave & Telecommunication Technology. 1999 9th International Crimean [In Russian with English abstracts]
Conference_Location :
Sevastopol, Crimea, Ukraine
Print_ISBN :
966-572-003-1
DOI :
10.1109/CRMICO.1999.815216
