Pat.#5216695:		Short pulse microwave source with a high prf and low power drain
INVENTORS:		Ross; Gerald F., Longboat Key, FL
		Mara; Richard M., Tewskbury, MA
		Rollins; Kenneth W., North Reading, MA
ASSIGNEES:		Anro Engineering, Inc., Lexington, MA
ISSUED:		June 1, 1993
FILED:		June 14, 1991
ABSTRACT: This invention describes a high voltage, very short pulse, microwave radiating source using low-cost components, and capable of operating at high pulse repetition frequencies (prf). The source is activated by an ordinary video trigger commensurate with driving TTL logic. A trigger will cause a chain of N (where N may be 12 or greater) avalanche transistors connected in a Marx generator configuration to threshold resulting in a 1,200 volt or greater baseband pulse having a rise time of less than 100 ps and a duration of about 3 ns driving the input port of a dipole antenna. The dipole is excited by a balun. This invention achieves very short pulse duration broadband microwave radiation at pulse repetition frequencies as high as 30 kHz or greater.