Title :
Low-loss low-ripple SAW filters using three bidirectional centrosymmetric transducers
Author :
Yen, K.H. ; Stokes, R.B. ; Lau, K.F. ; Kong, Adams W.-K. ; Kagiwada, R.S.
Author_Institution :
TRW Electronics Systems Group, Redondo Beach, USA
Abstract :
Low-loss, low-ripple and high out-of-band rejection SAW filters have been constructed using a three transducer configuration with symmetric/antisymmetric end transducers. The filter on 128°-cut LiNbO3 has an insertion loss of 5.2 dB, a passband ripple of 0.3 dB (peak to peak) and an out-of-band rejection of 55 dB.
Keywords :
filters; surface acoustic wave devices; transducers; LiNbO3; bidirectional centrosymmetric transducers; insertion loss; low-loss low-ripple SAW filters; passband ripple;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820276
