Apparatus for producing sonic vibrations at x-band microwave frequencies and higher

Claim 1

APPARATUS FOR TRANSMITTING EXTREMELY HIGH FREQUENCY MICROWAVE SIGNALS COMPRISING A MICROWAVE SIGNAL SOURCE CAPABLE OF PRODUCING SIGNALS OF AT LEAST NINE-KILOMEGACYCLES FREQUENCY, A TRANSFORMER MEANS INCLUDING SIGNALS TUNABLE MICROWAVE CAVITY TO RECEIVE MICROWAVE SIGNALS FROM SAID SOURCE AND CONCENTRATE AND DIRECT THOSE SIGNALS, AND A QUARTZ CRYSTALLINE ROD HAVING ONE END PORTION DISPOSED IN THE MICROWAVE CAVITY OF THE TRANSFORMER AND HAVING ITS OTHER END PORTION DIRECTED AWAY FROM THE TRANSFORMER, A TRANSDUCING CAP CONSISTING OF A LAYER OF INDIUM AT LEAST 0.0001 INCH THICK COVERING THE ENTIRE TRANSVERSE SURFACE OF SAID OTHER END PORTION OF THE DOR AND SERVING TO SCATTER AND DISSIPATE PHONOUS AND THEREBY PREVENT PHONON REFLECTION BACK TOWARD SAID MICROWEAVE CAVITY, AND MEANS TO MAINTAIN THE SAID ROD AND INDIUM CAP AT A TEMPERATURE BELOW 25* K. DURING OPERATION OF THE APPARATUS.