Systems applications of SAW filters and delay lines
Abstract
The applications that SAW (surface acoustic waves) filters and delay lines have to communications and radar systems are reviewed. The development of SAW resonators at frequencies up to 1 GHz is reported together with their promise for stabilizing precision oscillators. Operation directly at 1 GHz eliminates the multiplier chains required for conventional quartz oscillators. The use of miniature SAW transversal filters for banks of contiguous filters is shown to be important in reducing the size of fast frequency synthesizers and multiplexers for spread-spectrum communications applications. The design of a 9.1 microsecond delay line with all spurious echoes 70 db down is described together with its radar signal processing application.
- Publication:
-
In AGARD Impact of Charge Coupled Devices and Surface Acoustic Wave Devices on Signal Process. and Imagery in Advanced Systems 12 p (SEE N78-31279 22-31
- Pub Date:
- June 1978
- Bibcode:
- 1978iccd.agarS....C
- Keywords:
-
- Acoustic Delay Lines;
- Communication;
- Radar;
- Surface Acoustic Wave Devices;
- Electromagnetic Wave Filters;
- Multiplexing;
- Resonators;
- Signal Processing;
- Electronics and Electrical Engineering