SUBMARINE REPEATER UNIT STRUCTURE

摘要

PURPOSE:To improve radiation characteristics by coupling circuit cases which each have a printed-board holding part and a radiation substrate internally and a radiation window and a projecting parallel stage on the external side surface, and electrically insulating the circuit cases. CONSTITUTION:A printed board 9 having packaged electric parts is arranged extending to the printed-board holding part 13 of a radiation substrate 12 and then screwed, and a high heating value part 19 is fixed in the radiation substrate 12 or a case wall, thus forming circuit units 1 and 2. The circuit units 1 and 2 are coupled together by screws through an insulating bush 17 while projection parallel stages 14 of the cases are opposed to a center support 15 via insulating spaces 16 in between; and end surface plates 6a and 6b are screwed on both side surfaces of the center support 15 and then placed in an internal cyclinder 8, and the circumferential surfaces of the end surface plates 6a and 6b are coupled and fixed with screws. The flank of the center support 15 is also screwed to the internal cylinder 8.