Title :
Time-delay phase shifter controlled by piezoelectric transducer on coplanar waveguide
Author :
Kim, Sang-Gyu ; Yun, Tae-Yeoul ; Chang, Kai
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A time-delay phase shifter controlled by piezoelectric transducer (PET) is realized on a coplanar waveguide (CPW). The effective dielectric constant, propagation constant, etc., of the CPW are varied by the perturbation controlled by a PET. Compared to the perturbation on a microstrip line, published previously, the new CPW device provides 50% more phase shift.
Keywords :
coplanar waveguide components; microwave phase shifters; permittivity; piezoelectric transducers; PET; coplanar waveguide; effective dielectric constant; electromagnetic fields; perturbation; piezoelectric transducer; propagation constant; time-delay phase shifter; Coplanar waveguides; Dielectric constant; Electromagnetic fields; Electromagnetic waveguides; Microstrip; Phase shifters; Phased arrays; Piezoelectric transducers; Positron emission tomography; Wideband;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2002.807707
