Telecommunications – Receiver or analog modulated signal frequency converter
Reexamination Certificate
2005-01-28
2008-12-02
Nguyen, Simon D (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
C455S323000, C455S333000
Reexamination Certificate
active
07460844
ABSTRACT:
A quadrature mixer with an LO input is provided. The quadrature mixer receives a signal having a frequency FLOand a signal input having a frequency FSIG, and has an output that comprises an output impedance that is high at frequencies of |FLO−FSIG| and |FLO+FSIG| and low at other. A mixer coupled to the output impedance interacts with the output impedance such that an impedance presented at the signal input is high for signals at FSIGif FSIGis a predetermined signal frequency, and low at other frequencies.
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PCT International Search Report and Written Opinion of the International Searching Authority, mailed Jun. 9, 2005.
Magoon Rahul
Molnar Alyosha
Axiom Microdevices, Inc.
Jackson Walker L.L.P.
Nguyen Simon D
Rourk Christopher J.
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