Telecommunications – Transmitter and receiver at same station – Convertible
Reexamination Certificate
2007-06-05
2007-06-05
Urban, Edward F. (Department: 2618)
Telecommunications
Transmitter and receiver at same station
Convertible
C455S552100, C455S236100, C455S088000
Reexamination Certificate
active
10074676
ABSTRACT:
A radio-frequency receiver circuitry includes a down-converter circuitry, an analog-to-digital converter circuitry, and a DC offset reduction circuitry. The down-converter circuitry accepts a received radio-frequency signal and processes the radio-frequency signal to provide an in-phase down-converted signal and a quadrature down-converted signal to the analog-to-digital converter circuitry. The analog-to-digital converter circuitry converts the in-phase and quadrature down-converted signals to an in-phase digital output signal and a quadrature digital output signal, respectively. The DC offset reduction circuitry couples to the analog-to-digital converter circuitry, and tends to reduce a DC offset transmitted to the in-phase and quadrature digital output signals.
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Behrens Richard T.
Kerth Donald A.
Paulus Tod
Scott Jeffrey W.
Srinivasan Vishnu S.
Law Offices of Maximilian R. Peterson
Lee John J.
Silicon Laboratories Inc.
Urban Edward F.
LandOfFree
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