High frequency cavity tuned by both telescoping sleeves and voltage variable diode means

Claim 1

A CAVITY CONSTRUCTION OF THE CHARACTER DESCRIBED COMPRISING A FIRST CLOSED-ENDED SLEEVE, A SECOND CLOSEDENDED SLEEVE HAVING ITS OPEN END TELESCOPINGLY RECEIVED IN THE OPEN-ENDED PORTION OF THE FIRST-MENTIONED SLEEVE, A SLEEVE OF INSULATING MATERIAL BETWEEN THE TWO SLEEVES, AN INSULATED WASHER HAVING A PERIPHERAL SHOULDERED PORTION PHYSICALLY SEPARATING THE OPEN END OF THE SECOND-MEMTIONED SLEEVE FROM THE FIRST-MENTIONED SLEEVE, A FIRST ROD IN THE FIRST SLEEVE EXTENDING COAXIALLY OF THE FIRST SLEEVE AND BEING ELECTRICALLY CONNECTED AT THE CLOSED END OF THE FIRST SLEEVE, A SECOND ROD CONDUCTIVELY CONNECTED TO THE CLOSED END OF THE SECOND-MENTIONED SLEEVE AND EXTENDING COAXIALLY THEREOF, THE FIRST AND SECOND-MENTIONED RODS BEING SPACED ADJACENT SAID SHOULDERED PORTION OF SAID WASHER, THE OPPOSITE ENDS OF SAID RODS EACH HAVING A SOCKET THEREIN, A PARAMENTIC DIODE HAVING CORESPONDING TERMINALS THEREOF IN CORRESPONDING ONES OF SAID ROD SOCKETS, A PAIR OF TERMINALS WITH CORRESPONDING ONES THEREOF BEING MOUNTED ON CORRESPONDING ONES OF SAID RODS, A SOURCE OF DIRECT CURRENT VOLTAGE APPLIED TO SAID TERMINALS, A FIRST COAXIAL FITTING ON THE FIRST-MENTIOND SLEEVE, THE INNER CONDUCTOR OF SAID COAXIAL FITTING BEING CONNECTED TO A PROBE WHICH EXTENDS INTO THE FIRST-MEMTIONED SLEEVE, A SECOND COAXIAL FITTING MOUNTED ON SAID FIRST SLEEVE, AN OUTPUT PROBE IN SAID FIRST SLEEVE AND BEING CONNECTED TO THE INNER CONDUCTOR OF THE SECOND COAXIAL FITTING.