A waveguide connecting structure couples high-frequency signals between orthogonal waveguides using an intermediary section with specific field plane alignments.
A microstrip directional coupler uses sub-wavelength traces and a controlled gap to manage electromagnetic coupling.
Progressive permittivity in meta-surface plates directs microwaves to the water load, maintaining absorption efficiency despite temperature fluctuations.
A microstrip multiplexer combines multiple wide subband signals using a signal processing network and feeder to achieve good frequency band response.
Conductive pillars suppress TE10 mode excitation to eliminate spurious responses and transmission losses.