Title :
6B-5 Optimum Design for Slanted Finger SAW Filters on Langasite Substrate
Author :
Goto, Mikihiro ; Yatsuda, Hiromi ; Chiba, Takao
Author_Institution :
Res. & Dev. Dept., Japan Radio Co., Ltd., Saitama
Abstract :
Power flow angles (PFAs) on the langasite (LGS) substrate with Euler angle of (0deg, 138.5deg,Psi), Psi = 25.7deg to 27.7deg are investigated for slanted finger interdigital transducer (SFIT) SAW filters to realize an optimum design. A tilted 380 MHz SFIT SAW filter with an aperture of 40 wavelengths and number of finger pairs of 500 for input and 300 for output is designed for the appropriate PFA of the substrate and a good frequency response is obtained
Keywords :
interdigital transducers; lanthanum compounds; surface acoustic wave filters; surface acoustic wave transducers; 380 MHz; Euler angle; La3Ga5SiO14; SFIT SAW filters; frequency response; langasite substrate; lanthanum gallium silicate; slanted finger SAW filters; slanted finger interdigital transducer; substrate power flow angles; Apertures; Diffraction; Fingers; Frequency response; Load flow; Optical filters; Power engineering and energy; SAW filters; Surface acoustic waves; Transducers;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.61
