Consider the following statements as regards SAW filter 1. The centre frequency is determined by the pitch of IDT comb shaped electrodes2. The response can be modified shaping the overlap of comb electrodes3. The response is maximum when acoustic wave has its wavelength equal to pitch4. When a number of identical electrodes are arranged at the same pitch, the frequency characteristics of the filter is expressed by (sin x)/x Which of the above statements are correct?

Consider the following statements as regards SAW filter 1. The centre

1.	Consider the following statements as regards SAW filter 1. The centre frequency is determined by the pitch of IDT comb shaped electrodes2. The response can be modified shaping the overlap of comb electrodes3. The response is maximum when acoustic wave has its wavelength equal to pitch4. When a number of identical electrodes are arranged at the same pitch, the frequency characteristics of the filter is expressed by (sin x)/x Which of the above statements are correct?
A.	1, 2, 3, 4
B.	1, 2, 3 only
C.	1, 2, 4 only
D.	2, 3, 4 only
Answer» D. 2, 3, 4 only