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For a low cost radar system a serially fed, linear and equidistant waveguide slot antenna has been developed. A meander shaped waveguide path allows a frequency steerable main lobe without additional mechanical or electrical components. The antenna design focused on a maximum steering angle of ±60°. In order to further reduce the costs and simplify fabrication of the antenna a Substrate-Integrated...
There is an increased interest in eliminating nickel from all wearable/personal electronics surfaces to prevent contact dermatitis and other allergic reactions caused by nickel. This paper presents a new metal finish for contact surfaces based on a unique nano-crystalline silver alloy (NCSA) that eliminates the need for a nickel barrier layer. The performance of the NCSA-based finish is evaluated...
Although the mathematics for defining field weakening expressions are relatively uncomplicated, the application of these expressions for practical field-weakening implementations is not well documented. This paper describes the derivation of simplified expressions for implementing field weakening in field-oriented control (FOC) algorithms for use in a high torque, permanent-magnet synchronous motor...
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