Title :
Analysis and optimization of a phase shifter controlled by a piezoelectric transducer
Author :
Yun, Tae-Yeoul ; Chang, Kai
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
fDate :
1/1/2002 12:00:00 AM
Abstract :
This paper introduces a method for analyzing and optimizing a phase shifter controlled by a piezoelectric transducer (PET). To analyze the multilayer microstrip structure of the PET-controlled phase shifter, new equivalent single-layer (ESL) equations for the phase shift and loss calculations are developed and confirmed with spectral-domain analysis (SDA) of the moment method. A parametric analysis is accomplished with ESL equations and SDA, and optimization guidelines are suggested. An optimized PET phase shifter is demonstrated to operate up to 40 GHz with a maximum total loss of 4 dB and phase shift of 480°. Measured results agree very well with calculations showing substantially smaller control voltage, size, and dispersion, as compared to previously published data. This new analysis and optimization technique for the PET-controlled phase shifter should be useful in the design of phased-array antennas and tunable microwave circuits
Keywords :
antenna accessories; antenna phased arrays; losses; method of moments; microstrip lines; microwave antenna arrays; microwave phase shifters; piezoelectric transducers; spectral-domain analysis; 0 to 40 GHz; 4 dB; control voltage; equivalent single-layer equations; loss calculations; maximum total loss; moment method; multilayer microstrip structure; optimization guidelines; parametric analysis; phase shift; phase shifter; phased-array antennas; piezoelectric transducer; spectral-domain analysis; tunable microwave circuits; Antenna measurements; Equations; Guidelines; Microstrip; Moment methods; Nonhomogeneous media; Optimization methods; Phase shifters; Piezoelectric transducers; Positron emission tomography;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
