Title :
Miniature 90 MHz low-loss narrowband SAW filter using new resonant configuration
Author :
Hikita, Masayuki ; Tabuchi, T. ; Kojima, H. ; Kinoshita, Yuta
Author_Institution :
Hitachi Ltd., Central Research Laboratory, Kokubunji, Japan
Abstract :
A new low-loss narrowband SAW filter that uses one pair of electrically connected IDTs with an optimum number of fingers, as well as SAW reflectors, is described. A miniature filter with a loss as low as 2 dB and a bandwidth of 0.7% at 90 MHz is presented. The filter is mounted in a TO-8 package and is usable without any outer inductors.
Keywords :
passive filters; radiofrequency filters; surface acoustic wave devices; 90 MHz; SAW reflectors; TO-8 package; bandwidth; electrically connected IDTs; interdigital transducers; low-loss narrowband SAW filter; miniature filter; resonant configuration;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830644
