SYSTEMS AND METHODS FOR SYNCHRONOUS DEMODULATION
First Claim
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1. A system for synchronous demodulation using passive sampled analog filtering, comprising:
- an input channel for receiving an input signal;
a first passive, sampled analog filter for filtering the input signal;
a mixer for mixing the filtered input signal from the first filter and outputting a mixed signal;
a second passive sampled analog filter for filtering the mixed signal; and
an output channel for outputting the filtered mixed signal.
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Abstract
Systems and methods for synchronous demodulation using passive sampled analog filtering are disclosed. A system for synchronous demodulation includes an input channel for accepting an input signal, a first passive sampled analog filter for filtering the input signal, a mixer for mixing the filtered input signal and outputting a mixed signal, a second passive sampled analog filter for filtering the mixed signal, and an output channel for outputting the filtered mixed signal.
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Citations
20 Claims
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1. A system for synchronous demodulation using passive sampled analog filtering, comprising:
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an input channel for receiving an input signal; a first passive, sampled analog filter for filtering the input signal; a mixer for mixing the filtered input signal from the first filter and outputting a mixed signal; a second passive sampled analog filter for filtering the mixed signal; and an output channel for outputting the filtered mixed signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for synchronous demodulation using passive sampled analog filtering, comprising:
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presenting an excitation signal to a target element; receiving, at an input, a modified signal from the target element; filtering, using a passive sampled analog filter, the modified signal to remove noise; mixing the filtered signal with a reference signal from a clock, generator; filtering, using a second passive sampled analog filter, the mixed signal; and outputting, from the second passive sampled analog filter, a signal representing characteristics of the target element. - View Dependent Claims (14, 15, 16)
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17. A synchronous demodulation system using passive sampled analog filtering, comprising:
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a clock generator for generating an excitation signal; an input channel for receiving a modified excitation signal; means for passively filtering and mixing the modified excitation signal to synchronously demodulate the modified excitation signal and generate a demodulated output signal. - View Dependent Claims (18, 19, 20)
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Specification