Systems and methods for time domain to frequency domain conversion using frequency shifting
First Claim
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1. A method for time domain to frequency domain conversion comprises:
- obtaining time-domain input data;
converting the input data from the time domain to the frequency domain to provide frequency-domain data;
producing frequency-shifted time-domain data;
converting the frequency shifted time-domain data from the time domain to the frequency domain to provide frequency-shifted frequency-domain data;
combining the frequency-domain data with the frequency-shifted frequency-domain data to produce combined frequency-domain data; and
providing the frequency-domain data for further processing by a test and measurement system.
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Abstract
A method for time domain to frequency domain conversion is described. Time-domain input data is obtained. The input data is converted from the time domain to the frequency domain to provide frequency-domain data. Frequency-shifted time-domain data is produced. The frequency shifted time-domain data is converted from the time domain to the frequency domain to provide frequency-shifted frequency-domain data. The frequency-domain data is combined with the frequency-shifted frequency-domain data to produce combined frequency-domain data. The frequency-domain data is provided for further processing by a test and measurement system.
20 Citations
28 Claims
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1. A method for time domain to frequency domain conversion comprises:
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obtaining time-domain input data; converting the input data from the time domain to the frequency domain to provide frequency-domain data; producing frequency-shifted time-domain data; converting the frequency shifted time-domain data from the time domain to the frequency domain to provide frequency-shifted frequency-domain data; combining the frequency-domain data with the frequency-shifted frequency-domain data to produce combined frequency-domain data; and providing the frequency-domain data for further processing by a test and measurement system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An apparatus for time domain to frequency domain conversion, the apparatus comprising:
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a processor; memory in electronic communication with the processor; obtaining instructions stored in the memory, the obtaining instructions being executable by the processor to obtain time-domain input data; converting instructions stored in the memory, the converting instructions being executable by the processor to convert the input data from the time domain to the frequency domain to provide frequency-domain data; producing instructions stored in the memory, the producing instructions being executable by the processor to produce frequency-shifted time-domain data; second converting instructions stored in the memory, the second converting instructions being executable by the processor to convert the frequency shifted time-domain data from the time domain to the frequency domain to provide frequency-shifted frequency-domain data; combining instructions stored in the memory, the combining instructions being executable by the processor to combine the frequency-domain data with the frequency-shifted frequency-domain data to produce combined frequency-domain data; and providing instructions stored in the memory, the providing instructions being executable by the processor to provide the frequency-domain data for further processing by a test and measurement system. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A real-time spectrum analyzer for time domain to frequency domain conversion, the analyzer comprising:
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an input interface for continuously obtaining an input signal; an analog to digital converter for continuously converting the input signal into input data; a processor; memory in electronic communication with the processor; at least one digital signal processor for performing digital signal processing functions in electronic communication with the processor; obtaining instructions stored in the memory, the obtaining instructions being executable by the processor or the digital signal processor to obtain time-domain input data; converting instructions stored in the memory, the converting instructions being executable by the processor or the digital signal processor to convert the input data from the time domain to the frequency domain to provide frequency-domain data; producing instructions stored in the memory, the producing instructions being executable by the processor or the digital signal processor to produce frequency-shifted time-domain data; second converting instructions stored in the memory, the second converting instructions being executable by the processor or the digital signal processor to convert the frequency shifted time-domain data from the time domain to the frequency domain to provide frequency-shifted frequency-domain data; combining instructions stored in the memory, the combining instructions being executable by the processor or the digital signal processor to combine the frequency-domain data with the frequency-shifted frequency-domain data to produce combined frequency-domain data; and providing instructions stored in the memory, the providing instructions being executable by the processor or the digital signal processor to provide the frequency-domain data for further processing by a test and measurement system.
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27. An apparatus for time domain to frequency domain conversion, the apparatus comprising:
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processing logic; memory in electronic communication with the processing logic; obtaining logic, the obtaining logic being operable to obtain time-domain input data; converting logic, the converting logic being operable to convert the input data from the time domain to the frequency domain to provide frequency-domain data; producing logic, the producing logic being operable to produce frequency-shifted time-domain data; second converting logic, the second converting logic being operable to convert the frequency shifted time-domain data from the time domain to the frequency domain to provide frequency-shifted frequency-domain data; combining logic, the combining logic being operable to combine the frequency-domain data with the frequency-shifted frequency-domain data to produce combined frequency-domain data; and providing logic, the providing logic being operable to provide the frequency-domain data for further processing by a test and measurement system. - View Dependent Claims (28)
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Specification