Grating acoustic scanner using bulk acoustic waves
Abstract
A new type of electronically scanned and focused acoustic beam scanner, based on coherent scattering of a grazing incident bulk wave with chirped frequencies by an array of surface grooves, is discussed. Experimental results of a 40 MHz bulk wave grating acoustic scanner with 1 arcsec field of view and 300 micron lateral resolution will be presented as a feasibility demonstration.
- Publication:
-
Electronics Letters
- Pub Date:
- February 1981
- DOI:
- Bibcode:
- 1981ElL....17..141C
- Keywords:
-
- Bulk Acoustic Wave Devices;
- Gratings (Spectra);
- Imaging Techniques;
- Scanners;
- Surface Acoustic Wave Devices;
- Acoustic Sounding;
- Chirp Signals;
- Lithium Niobates;
- Signal Measurement;
- Instrumentation and Photography