Short pulse microwave source with a high PRF and low power drain

Details Short pulse microwave source with a high PRF and low power drain Short pulse microwave source with a high PRF and low power drain

1993-01-21

1994-04-26

Hajec, Donald

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343821, H01Q 916

Patent

active

053070798

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.

REFERENCES:
patent: 3922683 (1975-11-01), Kumpebeck
patent: 4587525 (1986-05-01), Parsons et al.
patent: 4800393 (1989-01-01), Edward et al.

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