| Paper | Title | Page |
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| MOPAS069 | Analysis of a Compact Circular TE 01-Rectangular TE 02 Waveguide Mode Converter | 587 |
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An analysis method for a three section mode transformer that converts a TE 01 circular waveguide mode to a TE 02 rectangular waveguide mode will be presented. Experimental results for this taper were earlier published in*. The middle section is a cylinder with a wall radius defined by rw = a(1 + d cos(2Θ)), where a is the radius of the circular guide and d is a design parameter. This cylinder is connected on either side to a circular waveguide and a rectangular waveguide section respectively, through tapered waveguide sections. In this analysis we used a perturbation technique where the rectangular waveguide section's wall radius is treated as a Fourier series expansion with a, the fundamental radius and d the perturbation parameter. By applying the proper boundary conditions we optimize the taper dimensions to minimize conversion into spurious modes.
*S. G. Tantawi et al., Physical Review Special Topics – Accelerator and Beams. 8, 042002 (2005) |