Four spine orthogonal mode couplers of frequency tripling

The utility model provides a four spine orthogonal mode couplers of frequency tripling, includes four ridge waveguides, the feed is coaxial and match lid, its characterized in that with four ridge waveguide feeds end assorted: four ridge waveguides comprise four spine circular waveguides, four spine transition waceguides in four spine transition waceguides in the first circular cone and the second circular cone, the throat end and the four spines circle waveguide connection of four spine transition waceguides in the first circular cone, and the throat end of four spine transition waceguides in the second circular cone docks with the flaring end of four spine transition waceguides in the first circular cone mutually, and the expansion angle of four spine transition waceguides in the second circular cone is lighter than the expansion angle of four spine transition waceguides in the first circular cone, four spine pieces in four ridge waveguides are the gradual change curve, and the curve that should change gradually adopts sinusoidal function's first power or high power, and every interval to two relative spine pieces holds the flaring end of the two or four spine circular cone transition waceguide to change from small to big from the throat of the one or four spine circular cone transition waceguide in four spine pieces, adopts four spines circle waveguide structure to realize 3: 1 the broadband work of octave has simple structure, compact characteristics.