Slow-wave structure for crossed-field travelling wave tube

Claim 1

A SLOW-WAVE STRUCTURE ADAPTED FOR USE IN A CROSSEDFIELD TRAVELLING WAVE TUBE TO INCREASE THE POWER HANDLING CAPABILITIES AND RUGGEDNESS OF THE TUBE WITHOUT SIGNIFICANT SACRIFICE IN EFFICIENCY AND WIDE BAND FREQUENCY CHARACTERISTICS, THE COMBINATION COMPRISING: A CHANNEL STRUCTURE HAVING A U-SHAPED CONFIGURATION, SAID STRUCTURE INCLUDES FIRST AND SECOND PARALLEL WALLS SEPARATED BY A COMMON BACKWALL FORMED THEREBETWEEN, AND A PLURALITY OF L-SHAPED VANES BEING FORMED BY A SHORT SECTION AT RIGHT ANGLES WITH A LONGER SECTION, EACH AFFIXED AT ONE END THEREOF TO SAID BACKWALL AND ONE SIDE OF ALTERNATE VANES BEING CONNECTED TO ONE OF THE PARALLEL WALLS, THE OTHER SIDE OF INTERSTITIAL VANES BEING CONNECTED TO THE OTHER OF SAID PARALLEL WALLS, SAID VANES THEREBY DEFINING A SERPENTINE WAVE PATH WHICH INCLUDES A PLURALITY OF CLOSELY SPACED INTERACTION GAPS BETWEEN ADJACENT VANES FOR SUPPORTING HIGH INTENSITY RADIO FREQUENCY ELECTRIC FIELDS ASSOCIATED WITH SAID ELECTROMAGNETIC WAVE WHILE SIMULTANEOULSY PROVIDING HIGH HEAT CONDUCTING CHARACTERISTICS.