Phase Sector Based RF Signal Acquisition
First Claim
1. A method for extracting values representative of modulation signal components from a modulated signal, the modulated signal containing a modulation signal, the method comprising:
- developing a local clock signal which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle and accumulating the modulated signal into an accumulated value,separately for at least one phase sector of one cycle of the local clock signal, each accumulated value representative of a modulation signal component, the modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated.
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Abstract
Values representative of modulation signal components are extracted from a modulated signal. The modulated signal contains a modulation signal. A local clock signal is developed which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle. The modulated signal is accumulated into an accumulated value, separately for at least one phase sector of one cycle of the local clock signal. Each accumulated value is representative of a modulation signal component. The modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated.
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Citations
71 Claims
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1. A method for extracting values representative of modulation signal components from a modulated signal, the modulated signal containing a modulation signal, the method comprising:
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developing a local clock signal which correlates in time to the modulated signal and has a plurality of non-overlapping phase sectors per cycle and accumulating the modulated signal into an accumulated value, separately for at least one phase sector of one cycle of the local clock signal, each accumulated value representative of a modulation signal component, the modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A system for extracting values representative of modulation signal components from a modulated signal, the modulated signal containing a modulation signal, the system comprising:
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a timing system configured to develop a local clock signal which correlates in time to the modulated signal, and has a plurality of non-overlapping phase sectors per cycle and a phase sector accumulator configured to accumulate the modulated signal into an accumulated value, separately for at least one phase sector of one cycle of the local clock signal, each accumulated value representative of a modulation signal component, the modulated signal accumulated is of an amount representative of the mathematical integral of the modulated signal during each phase sector of the local clock over which the modulated signal is accumulated. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70)
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71. A system for extracting values representative of modulation signal components from a modulated signal, the modulated signal containing a modulation signal, the system comprising:
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a timing system configured to develop a local clock signal which correlates in time to the modulated signal, and has a plurality of non-overlapping phase sectors per cycle; an operational amplifier having an output and an inverting input, a current representative of the modulated signal applied to the inverting input; a plurality of capacitive devices, the number of capacitive devices at least equal to the number of phase sectors per cycle; a plurality of switches, the number of switches at least equal to the number of phase sectors per cycle, each switch in series with one of the capacitive devices; wherein each serial combination of capacitive device and switch is in parallel with each other serial combination of capacitive device and switch and the operational amplifier between the output and the inverting input; and wherein the capacitive devices and switches are the only current route from the output to the inverting input so that the current through the capacitive devices and switches plus the current into the inverting input equals the current representative of the modulated signal.
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Specification