High flatness full waveguide bandwidth tripler based on planar metal breaking three-dimensional resonance

Terahertz frequency multipliers play a crucial role in terahertz systems, and achieving high flatness and broadband output has been a research focus. However, in the design of extremely high-frequency waveguide bandwidths, the lack of thinning processing techniques for dielectrics inevitably leads to resonances between the dielectric and the diode, thereby reducing the device’s power flatness.