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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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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Digital watermarking is the embedding of a robust, secure message with a low degree of obtrusiveness into the media content, a process performed to prevent people from tampering with the original by using editing tools. The Digital Watermarking chip can protect the copyright of and provide authentic.....
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Axial mode helix antennas are used as RFID base station antennas but the number of winding of helix antennas are at least 10, making them too high for use as base station antennas. To address the problem, an integrated wire elliptical helical antenna with novel cuboids dielectric resonator loading f.....
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This invention presents light maximization method for LED systems. Derived from a general theory that links the photometric, electric and thermal behaviours of LED systems together, the method provides the rules to design LED systems with maximum light output. Its main contribution is to provide cle.....
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