Signal processing with SAW devices
Abstract
The idea of filtering a signal by Fourier-transforming it, multiplying it by the transfer function of the desired filter (in real time), and inverse-transforming the result is well known. The key element of such a system is the Fourier transformer (or inverse transformer) which is typically implemented with a SAW tapped delay line. The present paper provides an analytical justification for this type of processing and describes a technique whereby this scheme, nominally applicable to time-limited signals (of the order of tens of microseconds), can be extended to allow filtering and detection of the very long contiguous data streams typical of most digital communications systems.
- Publication:
-
ITC/USA/'78; Proceedings of the International Telemetering Conference
- Pub Date:
- 1978
- Bibcode:
- 1978itc..proc.1037M
- Keywords:
-
- Fourier Transformation;
- Signal Processing;
- Surface Acoustic Wave Devices;
- Pulse Communication;
- Random Signals;
- Real Time Operation;
- Time Dependence;
- Transfer Functions;
- Electronics and Electrical Engineering