Date of Award


Degree Name

MS in Electrical Engineering


Electrical Engineering


College of Engineering


Dennis Derickson

Advisor Department

Electrical Engineering

Advisor College

College of Engineering


Modern communications, radar, and other high frequency systems all include filters in their designs. Designers frequently benefit from custom filters with cutoff frequencies or other specifications not readily available in off-the-shelf products. Obtaining a custom filter from a filter manufacturer is typically expensive and time consuming. Each new design requires new engineering and tuning to obtain the desired performance.

This thesis proposes an industry-first automatic design and manufacturing process for stepped impedance low pass filters that eliminates the costly engineering and tuning used by legacy filter manufacturers, enabling low-cost, rapid turn around of custom filter designs. We develop custom modeling and design software to generate filter designs from initial spec- ifications (cutoff frequency, order, response, etc.). We automatically convert these designs to G-Code to control a CNC lathe and manufacture the design. Our designs use a coaxial format with low loss and high power handling capability.

Our results show that the automatically designed and manufactured filters meet the initial performance specifications. Further work is necessary to increase manufacturing speed and efficiency and reduce cost.

Available for download on Sunday, December 08, 2024