Invention Grant
- Patent Title: DC compensation for VLIF signals
- Patent Title (中): VLIF信号的直流补偿
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Application No.: US12919536Application Date: 2008-03-19
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Publication No.: US08532225B2Publication Date: 2013-09-10
- Inventor: Conor O'Keeffe , Norman Beamish , Richard Verellen
- Applicant: Conor O'Keeffe , Norman Beamish , Richard Verellen
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- International Application: PCT/IB2008/051036 WO 20080319
- International Announcement: WO2009/115863 WO 20090924
- Main IPC: H04L25/06
- IPC: H04L25/06

Abstract:
Receiver circuitry for processing a received Very Low Intermediate Frequency signal wherein the receiver circuitry comprises a main processing path. The main processing path comprises mixing circuitry arranged to mix a received VLIF signal with a frequency down conversion signal to produce a main path signal. The receiver circuitry further comprises a direct current cancellation path comprising mixing circuitry arranged to mix a DC element of the received VLIF signal with the frequency down conversion signal to produce a DC cancellation signal. The receiver circuitry still further comprises signal summing circuitry arranged to add the DC cancellation signal in anti-phase with the main path signal.
Public/Granted literature
- US20110007847A1 DC COMPENSATION FOR VLIF SIGNALS Public/Granted day:2011-01-13
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