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

fYear

1992

Firstpage

57

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1992. Proceedings., IEEE 1992

Conference_Location

Tucson, AZ

Print_ISBN

0-7803-0562-0

Type

conf

DOI

10.1109/ULTSYM.1992.276064

Filename

276064