{TAIL ~ The invention} is {HEAD ~ a phase insensitive ultrasonic transducer} connected to other circuitry to form an ultrasonic receiver 
{ TAIL ~ The invention } is { HEAD ~ a phase insensitive ultrasonic transducer } connected to other circuitry to form an ultrasonic receiver
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH