Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2007-09-28
2011-12-27
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S229000, C375S232000, C375S230000, C455S214000, C329S311000
Reexamination Certificate
active
08085877
ABSTRACT:
Methods and systems for a quadrature local oscillator generator utilizing a DDFS for extremely high frequencies. Aspects of one method may include utilizing the DDFS to generate a first signal that may comprise an in-phase (I) component and a quadrature phase (Q) component. A base signal may be divided to generate a second signal with an in-phase (I) component and a quadrature phase (Q) component. The I and Q components of the first and second signals may be mixed by a plurality of mixers, and the outputs of the mixers may be combined to generate an in-phase component of a local oscillator signal and a quadrature phase component of the local oscillator signal. The frequency of the local oscillator signal may be controlled by inverting or not inverting outputs of one or more of the mixers.
REFERENCES:
patent: 5801589 (1998-09-01), Tajima et al.
patent: 6032028 (2000-02-01), Dickey et al.
patent: 6054948 (2000-04-01), Dean
patent: 6693980 (2004-02-01), Linder et al.
patent: 6778594 (2004-08-01), Liu
patent: 6906560 (2005-06-01), Coleman et al.
patent: 2001/0033200 (2001-10-01), Staszewski et al.
patent: 2002/0008588 (2002-01-01), Khan
patent: 2002/0132590 (2002-09-01), Marshall
patent: 2002/0150169 (2002-10-01), Kishi
patent: 2005/0012528 (2005-01-01), Kodama
patent: 2005/0070236 (2005-03-01), Paulus
patent: 2005/0070239 (2005-03-01), Paulus
patent: 2006/0029152 (2006-02-01), Kost et al.
patent: 2006/0068720 (2006-03-01), Lee et al.
patent: 2006/0111071 (2006-05-01), Paulus et al.
patent: 2007/0085612 (2007-04-01), Kodama
patent: 2007/0159259 (2007-07-01), Suh et al.
patent: 2008/0084336 (2008-04-01), Wang et al.
patent: 2008/0113628 (2008-05-01), Muhammad et al.
patent: 2008/0132195 (2008-06-01), Maxim et al.
patent: 2008/0181336 (2008-07-01), Maxim
patent: 2008/0181340 (2008-07-01), Maxim
patent: 2009/0086738 (2009-04-01), Rofougaran
patent: 2010/0090886 (2010-04-01), Beasley
Broadcom Corporation
Fan Chieh M
Garcia Santiago
McAndrews Held & Malloy Ltd.
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