Title :
Frequency agile microwave dielectric components integrated with high-speed piezoelectric actuator
Author :
Poplavko, Y.M. ; Prokopenko, Y.V. ; Kazmirenko, V.A. ; Jeong, Moongi ; Baik, Sunggi
Author_Institution :
Nat. Tech. Univ. of Ukraine, Ukraine
Abstract :
Low loss highly tunable microwave material can be fabricated using dielectric laminate structure in which effective dielectric constant /spl epsiv//sub ef/ is efficiently controlled. Proposed combined structure usually consists of two dielectric parts with an air gap between them. This gap has to be arranged in such a way that provides the largest perturbation in the electromagnetic filed. By means of fast piezoelectric miniactuator, the size of the air gap is changed. As a result, the /spl epsiv//sub ef/ of given structure strongly varies that is used for device control. Wide-band low loss waveguide phase shifters, highly tunable dielectric resonators, and based on them 20%-tunable filter are realized experimentally.
Keywords :
air gaps; band-pass filters; dielectric resonator filters; dielectric waveguides; electromagnetic fields; frequency agility; microwave filters; microwave materials; microwave phase shifters; permittivity; piezoelectric actuators; piezoelectric materials; air gap; device control; dielectric constant; dielectric laminate structure; dielectric resonator; electromagnetic filed; frequency agile microwave dielectric component; high-speed piezoelectric actuator; perturbation; piezoelectric miniactuator; tunable filter; tunable microwave material fabrication; wide-band low loss waveguide phase shifter; Dielectric constant; Dielectric losses; Dielectric materials; Electromagnetic waveguides; Frequency; Laminates; Phase shifters; Piezoelectric actuators; Resonator filters; Wideband;
Conference_Titel :
Microwave and Telecommunication Technology, 2003. CriMiCo 2003. 13th International Crimean Conference
Conference_Location :
Sevastopol, Crimea, Ukraine
Print_ISBN :
966-7968-26-X
DOI :
10.1109/CRMICO.2003.158889