Title
Analysis of Fresnel Zone Plates Focusing Dependence on Operating Frequency.
Abstract
The focusing properties of Fresnel Zone Plates (FZPs) against frequency are analyzed in this work. It is shown that the FZP focal length depends almost linearly on the operating frequency. Focal depth and focal distortion are also considered, establishing a limit on the frequency span at which the operating frequency can be shifted. An underwater FZP ultrasound focusing system is demonstrated, and experimental results agree with the theoretical analysis and simulations.
Year
DOI
Venue
2017
10.3390/s17122809
SENSORS
Keywords
Field
DocType
ultrasonic lens,Fresnel lens,focal depth,focal distortion,operating frequency
Depth of focus,Operating frequency,Optics,Fresnel zone,Electronic engineering,Focal length,Fresnel lens,Engineering,Distortion,Underwater
Journal
Volume
Issue
ISSN
17
12.0
1424-8220
Citations 
PageRank 
References 
2
0.72
2
Authors
5