How does the length and width of IDT(inter digitated transducer) of a SAW device affect the acoustic wave generated by the SAW device?

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AR Reddy

IDT finger width is related to surface acoustic wavelength. Hence finger width spacing decides the frequency of surface wave. Smaller the spacing, higher is the frequency.

The finger length is related to electrical impedance of IDT. Larger the length, lesser is the impedance.

Moaaz Sherif Sherif

is there any resources to know more about this subject ?

Muhammad Aamir

How to calculate fwhm of the IDT.

Viney Dixit

Andreas Winkler how to calculate number of fingers and length of the finger?