Frequency multiplier

Claim 1

IN A MICROWAVE FREQUENCY CONVERTER, THE COMBINATION OF AN INPUT WAVEGUIDE OF RECTANGULAR CROSS SECTION PROPORTIONED FOR CARRYING A BAND OF SELECTED INPUT FREQUENCIES AND HAVING THE TWO BROADER WALLS IN OPPOSED RELATION TO EACH OTHER, AN OUTPUT WAVEGUIDE OF RECTANGULAR CROSS SECTION PROPORTIONED FOR CARRYING A BAND OF SELECTED OUTPUT FREQUENCIES DIFFERING IN HARMONIC RELATION FROM THE INPUT FREQUENCIES AND HAVING THE TWO BROADER WALLS IN OPPOSED RELATION TO EACH OTHER, THE WAVEGUIDES BEING FIXED TOGETHER WITH A WALL OF EACH IN ELECTRICAL ENGAGEMENT AND WITH A COMMON OPENING IN SAID ELECTRICALLY ENGAGING WALLS, A TEFLON MEMBER IN SAID OPENING AND TERMINATING AT THE RESPECTIVE OPPOSED WALLS OF THE WAVEGUIDES A MICROWAVE VARACTOR HAVING TWO ENDS OF ELECTRICALLY CONDUCTIVE MATERIAL FORMING TERMINALS IN OPPOSED RELATION TO EACH OTHER ON A COMMON AXIS, TWO PROBES OF ELECTRICALLY CONDUCTIVE MATERIAL, EACH IN ELECTRICAL ENGAGEMENT WITH A RESPECTIVE ONE OF THE TERMINALS AND EXTENDING ALONG SAID AXIS, THE VARACTOR AND PROBES EMBEDDED IN THE TEFLON MEMBER IN POSITION SUCH THAT SAID AXIS IS PERPENDICULAR TO SAID WALLS OF THE WAVEGUIDES AND ONE OF THE PROBES EXTENDS INTO THE INPUT WAVEGUIDE AND THE OTHER OF THE PROBES EXTENDS INTO THE OUTPUT WAVEGUIDE, A BACKSHORT IN EACH OF THE WAVEGUIDES SPACED FROM THE RESPECTIVE PROBE TO PROVIDE BROADBAND COUPLING TO AND FROM THE VARACTOR, A FERRITE RING HELD IN PLACE ABOUT SAID AXIS AT THE OPPOSED WALL OF THE INPUT WAVEGUIDE BY SAID TEFLON MEMBER, AN IRIS TYPE BAND PASS FILTER STRUCTURE IN THE INPUT WAVEGUIDE AND SPACED ABOUT ONE QUARTER WAVELENGTH OF THE MEDIAN INPUT FREQUENCY FROM THE VARACTOR, AND A PLURALITY OF IRIS TYPE BAND PASS FILTERS IN THE OUTPUT WAVEGUIDE SPACED AT APPROXIMATELY ONE QUARTER WAVELENGTH INTERVALS OF THE MEDIAN OUTPUT FREQUENCY FROM THE VARACTOR IN THE OUTPUT DIRECTION.