Circular-Electric Mode and Junctions for Waveguide Couplers Use in Gyrotron Traveling-Wave Amplifiers

Recent gyotron traveling-wave amplifier experiments in the TE° / sub 01/ mode have led to the developing of 2-port and 4-port devices potentially useful as input couplers, severs, and beam-RF separators for colletor designs.The couplers are moderately wide-band, have high transmission efficiencies and low reflection coefficients. In addition, they are relatively easy to construct. We present analytical and experimental results.