Low-loss low-ripple SAW filters using three bidirectional centrosymmetric transducers
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 deg-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.
- Publication:
-
Electronics Letters
- Pub Date:
- May 1982
- DOI:
- 10.1049/el:19820276
- Bibcode:
- 1982ElL....18..403Y
- Keywords:
-
- Electroacoustic Transducers;
- Harmonic Analysis;
- Insertion Loss;
- Lithium Niobates;
- Ripples;
- Surface Acoustic Wave Devices;
- Bandpass Filters;
- Energy Dissipation;
- Frequency Response;
- Electronics and Electrical Engineering