Innovative Hardware Technologies for Anti-Jam and Electromagnetic Attack Rejection in Ballistic Missile Defense System (BMDS) Radars

The Branch Line Filter (BLF) will use chaotically generated fractal structures to couple with a chaotic jammer signal and not a desired radar return. During this effort, a branch line filter will be researched. A BLF or other fractal structures can be performed by selecting an iterative order commensurate with that of the expected chaotic interferences. The BLF will then be selective to a class of chaotic jammer signals. This property will be used in a planar circuit configuration to selectively terminate the chaotic jammer signal while providing a low loss transmission path for the desired receiver signal. This effort will provide a mechanism for research and understanding chaotic filter structures and provide insight into how to design and optimize these structures high performance jammer filter applications. This research is expected to be the basis for a new category of inexpensive, self-contained, high performance filter devices that can be inserted into T/R Modules.