Ridged waveguides can achieve much greater bandwidth that their traditional rectangular or circular counterparts, and this makes them attractive for applications which require broadband performance. However, broadband performance is often determined by other components in the waveguide system, in particular coaxial-to-waveguide transitions. These transitions typically involve the connection of coaxial transmission lines to the waveguide via some sort of probe which is able to excite a propagating mode within the waveguide structure. Achieving narrowband performance is usually straighforward, but achieving broadband performance across the operating frequency range of the waveguide is more challenging.
The aim of this project is to develop a broadband coaxial-to-ridged waveguide transition by (i) identifying appropriate implementation strategies; (ii) designing, modelling and optimising these structures using CST Studio Suite/Microwave Studio; and (iii) fabricating the design(s) and measuring their performance.
Undergraduate
A design/prototype of a broadband coaxial-to-ridged waveguide transition.
Prerequisite ELECTENG307, corequisite ELECTENG721.
Radio Systems (405.736, Lab)