A novel multifunctional negative group delay circuit is proposed. The can realize three different functions, including band-pass, high-pass and low-pass, which meet conditions with capacitance, inductance resistance. Analytical design equations are provided. effects of element values on the bandwidth, cut-off frequency minimum analyzed. According to this method, designed fabricated. Simulation ...

This article describes the application of functional programming techniques to a problem previously studied by imperative programmers, that of drawing general trees automatically. We rst consider the nature of the problem and the ideas behind its solution (due to Radack), independent of programming language implementation. We then describe a Standard ML program which reeects the structure of th...