Patent ID: 6160340
Filing Date: 2000-12-12
Classification: B06B,G10K

Abstract:
An ultrasonic transducer array comprising:a center row of middle transducer elements, each middle transducer element including a middle piezoelectric member and a first matching layer having a center row acoustic velocity, and being responsive to excitation signals to generate acoustic energy at a center row frequency;a first outer row of first side transducer elements located along a first side of said center row, each of said first side transducer elements including a first side piezoelectric member and a first matching layer having a first side row acoustic velocity, and being responsive to excitation signals to generate acoustic energy at a first outer row frequency; anda second outer row of second side transducer elements located along a second side of said center row, each of said second side transducer elements including a second side piezoelectric member and a first matching layer having a second side row acoustic velocity, and being responsive to excitation signals to generate acoustic energy at a second outer row frequency;wherein said center row frequency and acoustic velocity is significantly different from said first and second outer row frequencies and acoustic velocities, respectively.