A handheld stylus having an elongated housing, a writing and drawing
implement disposed within the housing and including a tip extending
through an opening at an end of the housing where ultrasonic waves
radiate therefrom and are used for determining a position of the stylus;
and at least one ultrasonic transducer disposed within the housing. The
transducer may be a cylindrical piezoelectric transducer having a holder
and a cylindrical piezoelectric film spanning between at least two spaced
apart cylindrical surfaces of the holder, or a flat transducer having a
diaphragm, and a piezoelectric material disposed on a surface of the
diaphragm.