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Photonic Bandgap structures are proposed for the design of the coupler of a 346 GHz sheet-beam backward wave oscillator. The design solves for typical issues of THz vacuum electron devices based on large sheet beams.
Vacuum electronics has been demonstrated as a promising solution to realize a portable, high power THz sources1. However, due to the micrometer-scale structures required, the performance of THz vacuum electron devices can be improved with the use of wide sheet beams to increase the beam current and therefore achieve a more effective field-beam interaction. The corrugated rectangular waveguide has...
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