Analysis of Fresnel Zone Plates Focusing Dependence on Operating Frequency
نویسندگان
چکیده
منابع مشابه
Analysis of Fresnel Zone Plates Focusing Dependence on Operating Frequency
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, ...
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ژورنال
عنوان ژورنال: Sensors
سال: 2017
ISSN: 1424-8220
DOI: 10.3390/s17122809