Cathie's chart in study table form - click "hide all" then "shuffle" to begin

Quiz yourself by guessing what should be in each of the black rectangles below before clicking on it to display the answer.
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Transducer
Operates by:
Is it steered? How?
Is it focused? How?
Image shape
Electronic or Mechanical?
Linear sequenced array  sequencing  no  no – fixed focus  rectangle  Electronic  
Curved sequenced array  sequencing  yes – transducer shape/element arrangement  no – fixed focus  “blunted” sector  Electronic  
Phased linear array  sequencing  no  yes – phasing  rectangle  Electronic  
Phased curved array  sequencing  yes – transducer shape/element arrangement  yes – phasing  “blunted” sector  Electronic  
Vector  sequencing  yes – phasing  yes – phasing  “flat top” sector  Electronic  
Linear phased array  phasing  yes – phasing  yes – phasing  “pointed” sector  Electronic  
Annular array  phasing  yes – mechanically  yes – phasing  “notch” sector  Electronic (with a mechanical reflector for steering)  
Oscillating Element  mechanical means  yes – element movement  no – fixed focus  notch sector  Mechanical  
Rotating group of elements  mechanical means  yes – element movement  no – fixed focus  notch sector  Mechanical  
Oscillating reflector  mechanical means  yes – reflector movement  no – fixed focus  notch sector  Mechanical  
Linearly translating element  mechanical means  no  no – fixed focus  rectangle  Mechanical  


   

 
 

 
 

 
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