Question

4. A helical slow wave structure (TWT) has a pitch of 2 mm and a diameter of 4 cm. If the wave inside the structure is propagating in the axial direction, calculate the wave velocity in that direction.

Answer #1

helical slow wave structure (TWT) wave velocity in axial direction is given by

where p is pitch ,d is diameter

given pitch of 2 mm and a diameter of 4 cm.

after subsitution phase velocity of wave =

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