Telecommunications – Transmitter and receiver at same station – Transceiver controlling a separate transceiver or receiver
Reexamination Certificate
2007-02-21
2010-11-09
Milord, Marceau (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Transceiver controlling a separate transceiver or receiver
C455S085000, C455S067110, C455S067140, C455S296000, C455S115100, C455S063100, C455S323000, C455S226100, C455S118000, C375S219000, C375S298000, C375S302000, C375S332000
Reexamination Certificate
active
07831215
ABSTRACT:
Embodiments of methods, transceiver circuits, and systems can compensate an IQ mismatch (e.g., Tx or Rx) or a carrier leakage using a plurality of local oscillators. One embodiment of a transceiver can include a first up-conversion IQ mixer, a second up-conversion IQ mixer, a first down-conversion IQ mixer with an input to receive an output of the second up-conversion IQ mixer, a second down-conversion IQ mixer with an input to receive an output of the first up-conversion IQ mixer, a first local oscillator to generate a first IQ LO signal for the first up-conversion IQ mixer and the first down-conversion IQ mixer, and a second local oscillator to generate a second IQ LO signal for the second up-conversion IQ mixer and the second down-conversion IQ mixer.
REFERENCES:
patent: 5949821 (1999-09-01), Emami et al.
patent: 6044112 (2000-03-01), Koslov
patent: 6970689 (2005-11-01), Khorram
patent: 7020220 (2006-03-01), Hansen
patent: 7184714 (2007-02-01), Kutagulla et al.
patent: 7187916 (2007-03-01), Mo et al.
patent: 7248625 (2007-07-01), Chien
patent: 7310387 (2007-12-01), Kim et al.
patent: 7333423 (2008-02-01), Palaskas et al.
patent: 7362826 (2008-04-01), Willingham
patent: 7433298 (2008-10-01), Narasimhan
patent: 7463864 (2008-12-01), Vassiliou et al.
patent: 7463866 (2008-12-01), Chen
patent: 7496340 (2009-02-01), Chen et al.
patent: 7539268 (2009-05-01), Fechtel
patent: 7567783 (2009-07-01), Chen
patent: 2004/0217753 (2004-11-01), Yamanaka et al.
patent: 2004/0219884 (2004-11-01), Mo et al.
patent: 2005-66953 (2006-03-01), None
Lee Kyeongho
Park Joonbae
GCT Research, Inc.
Milord Marceau
Muir Patent Consulting, PLLC
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