Title :
Zero temperature coefficient of resonant frequency in LiTaO3length expander bars
Author :
Sawamoto, K. ; Niizeki, N.
Abstract :
Zero temperature coefficient of resonant frequency has been found in LiTaO3length expander bars with orientations zyw (+ 30 deg), zyw (+35 deg), and zyw (+45 deg). These bars have large coupling constants k32(more than 20 percent). The zyw (+30 deg) bar is the most promising for wide-band bandpass filter applications because it shows the smallest change in the coupling constants at ordinary temperatures.
Keywords :
Band pass filters; Bars; Coupling circuits; Differential amplifiers; Filtering theory; Impedance; Resonant frequency; Temperature distribution; Voltage; Wideband;
Journal_Title :
Proceedings of the IEEE
DOI :
10.1109/PROC.1970.7910
