Feed forward spur reduction in mixed signal system
First Claim
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1. A mixed-signal system for reducing spurious signals, said mixed-signal system comprising:
- a processor connected to receive a converted test signal, said converted test signal corresponding to a test signal converted between an analog domain and a digital domain, said converted test signal including a spurious signal; and
wherein said processor is operable to determine an amplitude of a spur cancellation signal in association with said converted test signal and to estimate a phase of a spur cancellation signal from said converted test signal for use in reducing said spurious signal in a data signal.
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Abstract
A mixed-signal system is capable of reducing spurious signals in data signals by estimating the amplitude and phase of a spur cancellation signal. The mixed-signal system includes a processor connected to receive a converted test signal including one or more spurious signals. The converted test signal corresponds to an analog or digital test signal converted between the analog domain and the digital domain. The processor determines the amplitude and estimates the phase of the spur cancellation signal from the converted test signal. The spur cancellation signal can be used to reduce the one or more spurious signals in a data signal.
40 Citations
27 Claims
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1. A mixed-signal system for reducing spurious signals, said mixed-signal system comprising:
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a processor connected to receive a converted test signal, said converted test signal corresponding to a test signal converted between an analog domain and a digital domain, said converted test signal including a spurious signal; and
wherein said processor is operable to determine an amplitude of a spur cancellation signal in association with said converted test signal and to estimate a phase of a spur cancellation signal from said converted test signal for use in reducing said spurious signal in a data signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for reducing spurious signals in a mixed-signal system, said method comprising:
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receiving a converted test signal, said converted test signal corresponding to a test signal converted between an analog domain and a digital domain, said converted test signal including a spurious signal;
determining an amplitude of a spur cancellation signal in association with said converted test signal; and
estimating a phase of said spur cancellation signal from said converted test signal for use in reducing said spurious signal in a data signal. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification