Mixer
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United States of America Patent
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May 4, 2010
Grant Date -
Jan 4, 2007
app pub date -
May 1, 2006
filing date -
Jul 1, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a mixer including: an amplifier amplifying an input signal using at least one amplifier element; a mixing unit mixing the input signal amplified by the amplifier with a local oscillator signal output from a local oscillator. The mixing unit includes at least one pair of switching elements switching the amplifier, and the switching elements are MOSFETs having gates and body nodes to which a same local oscillator signal is applied. Thus, a time required for turning on the switching elements can be reduced, and 1/f noise is also reduced. Also, an overdrive voltage can be increased with respect to local oscillator signals having an identical intensity. Thus, a relatively low voltage operation can be performed.
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