Objectives In this work, high-efficiency power amplifier topologies are discussed and implemented. The goal is to push the boundary of output power, operating frequency, efficiency and bandwidth. Also, the design of a key passive component, a balanced-to-unbalanced transformer (balun) is discussed in detail. Some new designs of the baluns are shown, and the results show advantages of these baluns over some of the traditional work at L-band. Cortial, P The world wide web as a tool for education on energy and the environment Anderson, C Innovative aerodynamic devices for the control and overspeed protection of horizontal axis wind turbines (available only as paper copy) (available only as paper copy) Ali edit my college essay free, B Management of waste from an oil installation
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