Title :
A surface acoustic wave filter for color TV receiver VIF
Author :
Komatsu, Yasutoshi ; Yanagisawa, Yuzuru
Author_Institution :
Sony Corporation Research Center, Yokohama, Japan
fDate :
3/1/1977 12:00:00 AM
Abstract :
A surface acoustic wave filter for color TV-VIF with a low insertion loss and high selectivity was developed using modified normal type interdigital transducers. Single-crystalline LiNbO3was used as the substrate and the electrodes were formed by photolithographic technique. The ripples in the passband were suppressed by means of a step-type transducer and the sidelobes in the out-of-band were decreased by eliminating some finger elements of the transducer. Filter chip was so small that it could be packaged in a TO-5 type can.
Keywords :
Acoustic transducers; Acoustic waves; Electrodes; Filters; Fingers; Insertion loss; Packaging; Passband; Surface acoustic waves; TV receivers;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/T-ED.1977.18713
