Title :
Low loss phase shifter based on piezo-controlled layered dielectric structure
Author :
Poplavko, Y. ; Kazmirenko, V. ; Prokopenko, Y. ; Moongi Jeong ; Sunggi Baik
Author_Institution :
Nat. Tech. Univ. of Ukraine, Ukraine
Abstract :
Layered structure made of high-/spl epsiv/ dielectric and piezo-controlled air slot, filling various type waveguides, is used as tunable low loss wide-band phase shifter. A contemporary piezoelectric actuator is employed for fast variation of air slot width. This alteration results in considerable change in effective dielectric constant /spl epsiv//sub ef/ of the structure. Using high quality microwave dielectrics, it is possible to realize low loss phase shifters in the microwave as well as in the millimeter wave region.
Keywords :
dielectric-loaded waveguides; losses; microstrip components; microwave phase shifters; millimetre wave phase shifters; piezoelectric actuators; rectangular waveguides; tuning; waveguide components; MM-wave phase shifters; air slot width variation; effective dielectric constant change; high quality microwave dielectrics; high-/spl epsiv/ dielectric; low loss phase shifter; microwave phase shifters; piezo-controlled air slot; piezo-controlled layered dielectric structure; piezoelectric actuator; tunable phase shifter; waveguides; wide-band phase shifter; Dielectric devices; Dielectric losses; Ferroelectric materials; Frequency; Microwave devices; Millimeter wave communication; Millimeter wave radar; Millimeter wave technology; Phase shifters; Telecommunication control;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210970
