High-order filters, capable of increasing the efficiency of converters, depend on advanced control algorithms to reduce multiple resonant frequencies, but that such algorithms often require precise information about the component parameters of the converter’s output filters. To capture the parameter.....
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The invention concerns a method and apparatus for controlling the output phase of a voltage controlled oscillator (VCO) for use in antenna arrays for receiving radio signals. Such arrays can converge energy, receive signals, and reject interference. Beam-forming techniques using phase shifters are u.....
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Conventional digital holography involves a high amount of computation to generate an object scene, imposing a significant bottleneck to practical applications. The invention presents techniques for efficiently generating full parallel 3D holographic images of a 3D real or synthetic object scene. The.....
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An economical and versatile approach is developed to construct photonic structures using well-established solution-based deposition and post-deposition modification techniques. Without sophisticated and expensive vacuum equipment or control systems, such an approach can achieve elaborate periodic mi.....
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Recent advances in power electronics and semiconductor technologies and cost reduction of solar panels have profound impact on the commercial acceptance of grid connected photovoltaic (PV) systems. Among various choices, high energy-efficient AC-modules that consist of an inverter are suitable for s.....
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