Cold spray technology for high performance frequency selective conductive structures
SAIEE Africa Research Journal
School of Electrical and Information Engineering, University of the Witwatersrand, Private Bag 3, Johannesburg Wits 2050, South Africa; School of Mechanical, Industrial and Aeronautical Engineering, University of the Witwatersrand, Private Bag 3, Johannesburg Wits 2050, South Africa
Conductive structures and interconnects can be designed to exhibit a low pass filtering characteristic. This is accomplished by making use of the skin and proximity effects which confine high frequency currents to a reduced conductor cross sectional area. The efficacy of such filtering structures can be enhanced through the use of composite multi layer conductors, each layer with specific electric and magnetic properties. The widespread implementation of this type of filter has been limited by the difficulty in the layer design, manufacture and availability of materials with the correct properties. This paper discusses how each of these obstacles may be overcome and so doing opens up a large area of new potential applications.
Cold spray technology; Cross sectional area; Filtering structures; Frequency-selective; High-frequency current; Low-pass filtering; Proximity effects; Electric properties; Intelligent materials; Skin effect; Low pass filters