Title :
Conductance measurements on a leaky SAW harmonic one-port resonator
Author :
Campbell, Colin K. ; Edmonson, Peter J.
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, Ont., Canada
Abstract :
Conductance measurements are reported on a leaky SAW (LSAW) harmonic one-port resonator on a 64/spl deg/Y-X LiNbO/sub 3/ substrate. This employed a short three-finger IDT for fundamental and second harmonic operation together with long reflection gratings. Conductances were measured with and without the end gratings. From an analysis of the measurements, it was deduced that, for optimum second harmonic performance, the grating stop-band frequency should be higher than the IDT unperturbed center frequency. This result is in contrast to fundamental frequency resonator designs in which the end grating stop-band frequency is placed below the IDT center frequency for optimum performance.
Keywords :
diffraction gratings; electrical conductivity; harmonic generation; interdigital transducers; lithium compounds; surface acoustic wave resonator filters; surface acoustic wave resonators; ultrasonic transducers; LSAW harmonic one-port resonator; LiNbO/sub 3/; LiNbO/sub 3/ substrate; conductance measurements; end grating stop-band frequency; fundamental operation; grating stop-band frequency; leaky SAW harmonic one-port resonator; long reflection gratings; optimum performance; second harmonic operation; short three-finger IDT; unperturbed center frequency; Fingers; Frequency; Gratings; Harmonic analysis; Metallization; Performance analysis; Power harmonic filters; Reflection; Resonator filters; Surface acoustic waves;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
