Title :
Finite element modeling of acoustic radiation from piezoelectric phased array antennas
Author :
Friedrich, W. ; Kaarmann, H. ; Lerch, R.
Author_Institution :
Siemens AG, Erlangen, Germany
Abstract :
A novel scheme based on the finite element method is presented for calculating the radiated sound field and farfield directivity pattern of individual array elements in phased-array antennas. Piezoelectric finite elements are used to model the vibrational behavior of the piezoelectric transducer while fluid finite and infinite elements are applied to determine the radiated sound field. The computed angular responses are in excellent agreement with measured data
Keywords :
acoustic arrays; acoustic field; acoustic imaging; antenna phased arrays; antenna radiation patterns; finite element analysis; piezoelectric transducers; ultrasonic transducers; acoustic radiation; acoustical imaging; angular responses; farfield directivity pattern; finite element method; piezoelectric phased array antennas; piezoelectric transducer; radiated sound field; vibrational behavior; Acoustic arrays; Acoustic measurements; Antenna arrays; Antenna measurements; Diffraction; Finite element methods; Geometry; Phased arrays; Ultrasonic transducer arrays; Vibrations;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171468
