Compact High-Power Microwave Compression Systems for Formation of Long Nanosecond-Duration Pulses with a Rectangular Pulse Shape

摘要

We propose a new approach to designing the geometry of large accumulative systems of compact Microwave Pulse Compressors (MPC's) used to generate ～10-ns rectangular pulses in the S- and X-bands. Our design uses standard structural elements made from single-mode or moderately multimode waveguide sections whose ends are terminated by waveguide tees or their analogs. One arm of each T-junction is connected to a section of the resonant cavity, the second arm is close-circuited, and the third arm connects to an adjacent linear section. The plasma switch, used to Q-spoil the cavity, is mounted in the side arm of another tee. The proposed approach leads to develop of very compact systems. Integration of an MPC into an existing RF generator is also straightforward without significantly expanding its footprint. We present schemes for several types of MPC's with variable geometry of the accumulative system. Our work shows that a specific architecture of the accumulative system, accounting for the relevant distribution of energy and method for pulse extraction, can be used to build MPC's with discretely controlled output pulse parameters. This paper demonstrates the first results of an experimental study of MPC's with a planar accumulative system.