Microwave surface-acoustic-wave components
Abstract
Various surface acoustic wave components operating at frequencies greater than 1 GHz were realized using an electron beam pattern generator. Fabrication process is described and the main features of devices are reported. Simple and tapped delay lines operating at about 1.3 GHz with a 3 db bandwidth close to 500 MHz were performed with lithium niobate substrates. The maximum delay time is equal to 10 micro seconds. Large bandwidth coded lines and dispersive delay lines were also tested. Narrow bandwidth filters were realized using sampled inter digital transducers deposited on surfaces of lithium niobate and quartz substrates. A relative bandwidth of 0.0008 was obtained. Oscillators were implemented with such filters up to 2 GHz, the substrates being ST cut quartz plates.
- Publication:
-
In AGARD Impact of Charge Coupled Devices and Surface Acoustic Wave Devices on Signal Process. and Imagery in Advanced Systems 9 p (SEE N78-31279 22-31
- Pub Date:
- June 1978
- Bibcode:
- 1978iccd.agarQ....H
- Keywords:
-
- Acoustic Delay Lines;
- Electron Beams;
- Fabrication;
- Microwaves;
- Surface Acoustic Wave Devices;
- Bandpass Filters;
- Bandwidth;
- Channel Multipliers;
- Lithium Niobates;
- Oscillators;
- Quartz;
- Electronics and Electrical Engineering