Frequency doubling circuits, method, and systems including quadrature phase generators
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United States of America Patent
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Apr 3, 2001
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N/A
app pub date -
Jun 28, 1999
filing date -
Jun 28, 1999
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Abstract
A frequency doubling circuit includes a quadrature phase generator and a mixer coupled to the quadrature phase generator. The quadrature phase generator receives a reference signal having a reference frequency and generates first and second quadrature phase shifted signals having the reference frequency. The mixer receives the first and second quadrature phase shifted signals and generates an output signal having an output frequency twice that of the reference frequency. Related methods and communications devices are also discussed.
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