Single side band mixer and local oscillator having the same
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United States of America Patent
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Aug 14, 2012
Grant Date -
Feb 24, 2011
app pub date -
Jul 14, 2010
filing date -
Aug 19, 2009
priority date (Note) -
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Abstract
A single side band (SSB) mixer includes an in-phase SSB mixer unit and a quadrature-phase SSB mixer unit. The in-phase SSB mixer unit generates an in-phase output current, and includes a first transformer load in which a portion of a quadrature-phase output current flows. The quadrature-phase SSB mixer unit generates the quadrature-phase output current, and includes a second transformer load in which a portion of the in-phase output current flows. The SSB mixer may be used in a wide frequency band without degrading frequency selectivity.
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