Multi-Hole Waveguide Coupler

Multi-hole waveguide coupler is extension of single-hole coupler, designed to increase the operational bandwidth. The performance is based on size of the coupling holes and distance between them, since it is important to achieve wave amplification in the through-direction and cancellation in the opposite direction.

The waveguides used correspond to standard X-band WR-90, with dimensions of 22.86 mm by 10.16 mm. The waveguides are coupled through a series of rectangular cross-section holes arranged in a zig-zag order.

Simulation is performed at low number of frequency points due to powerful built-in interpolation. The hardware requirements are minimum, any standard desktop or laptop yields simulation time measured in seconds, owing to rather small number of unknowns.

Section: Microwave Circuits

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