Bandwidth multiplication for a test and measurement instrument using non-periodic functions for mixing
First Claim
1. An acquisition apparatus for a test and measurement instrument comprising:
- a splitter configured to split an input signal into a plurality of split signals;
a plurality of oscillators, each oscillator configured to generate a periodic signal;
a plurality of combiners, each combiner configured to combine an associated plurality of the periodic signals into an associated signal combination;
a plurality of mixers, each mixer configured to mix an associated split signal and an associated signal combination into an associated mixed signal;
a first digitizer configured to digitize an associated split signal; and
a plurality of second digitizers, each second digitizer configured to digitize an associated mixed signal;
wherein at least one of the signal combinations is substantially non-periodic.
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Accused Products
Abstract
An acquisition apparatus for a test and measurement instrument including a splitter configured to split an input signal into a plurality of split signals, a plurality of oscillators, each oscillator configured to generate a periodic signal, a plurality of combiners, each combiner configured to combine an associated plurality of the periodic signals into an associated signal combination where at least one of the signal combinations is substantially non-periodic. The apparatus also includes a plurality of mixers, each mixer configured to mix an associated split signal and an associated signal combination into an associated mixed signal, a first digitizer configured to digitize an associated split signal, and a plurality of second digitizers, each second digitizer configured to digitize an associated mixed signal.
39 Citations
24 Claims
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1. An acquisition apparatus for a test and measurement instrument comprising:
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a splitter configured to split an input signal into a plurality of split signals; a plurality of oscillators, each oscillator configured to generate a periodic signal; a plurality of combiners, each combiner configured to combine an associated plurality of the periodic signals into an associated signal combination; a plurality of mixers, each mixer configured to mix an associated split signal and an associated signal combination into an associated mixed signal; a first digitizer configured to digitize an associated split signal; and a plurality of second digitizers, each second digitizer configured to digitize an associated mixed signal; wherein at least one of the signal combinations is substantially non-periodic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of digitizing an input signal for a test and measurement instrument comprising:
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splitting an input signal into a plurality of split signals; combining a plurality of periodic signals into a plurality of signal combinations, wherein each signal combination is substantially non-periodic; mixing each signal combination with an associated split input signal to generate an associated mixed signal; digitizing the input signal; digitizing each mixed signal; calculating a plurality of sub-bands in response to the digitized input signal and the digitized mixed signals; and combining the sub-bands into a reconstructed signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A test and measurement instrument comprising:
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means for splitting an input signal into a plurality of split signals; means for combining a plurality of periodic signals into a plurality of signal combinations, wherein each signal combination is substantially non-periodic; means for mixing each signal combination with an associated split input signal to generate an associated mixed signal; means for digitizing the input signal; means for digitizing each mixed signal; means for calculating a plurality of sub-bands in response to the digitized input signal and the digitized mixed signals; and means for combining the sub-bands into a reconstructed signal. - View Dependent Claims (22, 23, 24)
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Specification