Invention Grant
US08385457B2 Methods and systems to compensate IQ imbalance in wideband zero-if tuners
有权
补偿宽带零无功调谐器智能失衡的方法和系统
- Patent Title: Methods and systems to compensate IQ imbalance in wideband zero-if tuners
- Patent Title (中): 补偿宽带零无功调谐器智能失衡的方法和系统
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Application No.: US12565381Application Date: 2009-09-23
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Publication No.: US08385457B2Publication Date: 2013-02-26
- Inventor: Kennan Herbert Laudel , Nicholas Cowley , Isaac Ali
- Applicant: Kennan Herbert Laudel , Nicholas Cowley , Isaac Ali
- Applicant Address: US CA Santa Clara
- Assignee: Intel Corporation
- Current Assignee: Intel Corporation
- Current Assignee Address: US CA Santa Clara
- Agency: Garrett IP, LLC
- Main IPC: H04L27/10
- IPC: H04L27/10 ; H04B17/00

Abstract:
Methods and systems to compensate IQ imbalances in a tuner system, including relatively wideband ZIF tuner systems and tuner systems having substantially linear frequency dependent phase imbalance, where a one-tap compensation element may be utilized to compensate frequency dependent phase imbalance. A two tone probe may be applied in controlled loop-back modes, and resultant baseband components may be used to determine a straight line from which to determine compensation. The probe may include a Multi-Media over Coax Alliance (MoCA) Type 2 probe. Compensation parameters may be determined as fixed or non-adaptive compensation parameters in a digital domain and may be applied at baseband. One or more compensation values may be determined in a fixed point circuit.
Public/Granted literature
- US20110069744A1 METHODS AND SYSTEMS TO COMPENSATE IQ IMBALANCE IN WIDEBAND ZERO-IF TUNERS Public/Granted day:2011-03-24
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