Title :
Wide bandwidth SAW resonators and VCO using slanted interdigital transducers
Author :
Yamanouchi, K. ; Matsudo, T. ; Takeuchi, M.
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
A voltage-controlled oscillator (VCO) using a frequency synthesizer requires low noise and wide variable frequency range. Surface acoustic wave (SAW) resonators using slanted interdigital transducers (slanted interdigital SAW resonators) for obtaining the requisite wide variable frequency range with improved electrode structure are proposed. Theoretical and experimental results for the impedance characteristics of the slanted interdigital SAW resonators are described. A wider variable frequency range than that of a VCO using conventional SAW resonators is obtained
Keywords :
acoustic impedance; acoustic resonators; crystal resonators; radiofrequency oscillators; surface acoustic wave devices; ultrasonic transducers; variable-frequency oscillators; 360 to 430 MHz; Al-LiNbO3; LiNbO3 substrate; VCO; electrode structure; frequency synthesizer; impedance characteristics; low noise; slanted interdigital SAW resonators; slanted interdigital transducers; voltage-controlled oscillator; wide variable frequency range; Bandwidth; Electrodes; Fingers; Frequency synthesizers; Gold; Impedance; Surface acoustic waves; Transducers; Ultra wideband technology; Voltage-controlled oscillators;
Conference_Titel :
Ultrasonics Symposium, 1992. Proceedings., IEEE 1992
Conference_Location :
Tucson, AZ
Print_ISBN :
0-7803-0562-0
DOI :
10.1109/ULTSYM.1992.276064
