No abstract

A 100GHz planar helix with straight-edge connections slow-wave structure incorporating coplanar waveguide feed has been designed and fabricated. The proposed fabrication process can produce high-aspect-ratio planar helical structures which is essential for sheet electron beam traveling-wave tube application. The photoresists used in this process can be easily stripped after electroplating of three-dimensional structures.

This thesis presents extensive studies on a new planar helix slow-wave structure (SWS) which consists of a planar helix with straight-edge connections (PH-SEC). The PH-SEC has been studied in the context of traveling-wave tube (TWT) applications. Unlike the conventional circular helix, the PH-SEC can be fabricated