Patent ID: 7868273

Claim:
A microwave generator ( 11 ) with a short-circuit spark gap ( 13 ) between electrodes ( 48 , 45 ) of a capacitive microwave resonator ( 43 ) thereof, which is terminated at an antenna ( 18 ), and a plurality of said antennas being operated in parallel as an antenna array ( 10 ), wherein the spark gaps ( 13 ) are settable to provide the same time response; a plurality of optoelectronic detector ( 21 ) being provided for setting the time at which a spark gap ( 13 ) responds; said detectors ( 21 ) being connected to a multichannel timer ( 24 ); and wherein the timer ( 24 ) in each channel, except for one channel, is driven with a delay ( 26 ) which is located before or after the detectors ( 21 ).