Tr switch having unbiased diodes which short during transmission and resonate inductance during reception

Claim 1

HIGH POWER SEMICONDUCTOR SWITCHING APPARATUS COMPRISING, A FIRST ELECTROMAGNETIC WAVE TRANSMISSION LINE, A BRANCH COAXIAL TRANSMISSION LINE HAVING AT LEAST TWO CONDUCTORS AND COUPLED TO SAID FIRST TRANSMISSION LINE AT A REGION INTERMEDIATE THE TWO ENDS THEREOF, SAID BRANCH TRANSMISSION LINE HAVING INNER AND OUTER CONDUCTORS OF GREATLY ENLARGED DIAMETERS AT A DISTANCE SUBSTANTIALLY A QUARTER WAVELENGTH FROM THE JUNCTION OF SAID TWO TRANSMISSION LINES, A SHUNT-CONNECTED INDUCTIVE TUNING STUB EXTENDING CIRCUMFERENTIALLY AROUND THE ENLARGE PORTION OF SAID BRANCH TRANSMISSION LINE, A PLURALITY OF VOLTAGE-CONTROLLABLE VARIABLE IMPEDANCE ELEMENTS SYMMETRICALLY DISPOSED BETWEEN THE CONDUCTORS OF SAID BRANCH TRANSMISSION LINE AT THE ENLARGED PORTION THEREOF, SAID IMPEDANCE ELEMENTS BEING CHARACTERIZED BY PRESENTING A RELATIVELY LARGE CAPACITIVE REACTANCE WHEN LOW POWER ELECTROMAGNETIC WAVES ARE INCIDENT THEREON AND A RELATIVELY LOW INDUCTIVE REACTANCE WHEN HIGH POWER ELECTROMAGNETIC WAVES ARE INCIDENT THEREON, THE INDUCTIVE REACTANCE OF SAID SHUNT-CONNECTED TUNING STUB BEING PROPORTIONED TO PARALLEL RESONATE WITH THE CAPACITIVE REACTANCE PRESENTED BY SAID IMPEDANCE ELEMENTS WHEN LOW POWER ELECTROMAGNETIC WAVES ARE INCIDENT THEREON, THEREBY PROVIDING A HIGH IMPEDANCE BETWEEN THE CONDUCTORS OF SAID BRANCH TRANSMISSION LINE TO PERMIT LOW POWER ELECTROMAGNETIC WAVES TO PROPAGATE SUBSTANTIALLY UNAFFECTED THROUGH SAID BRANCH TRANSMISSION LINE.