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US 2013/0154742 A1Published application
Low Noise Amplifier for Multiple Channels
AssigneeAnalog Devices, Inc.
InventorHoward R. Samuels
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Abstract
An amplifier system has an amplifier for amplifying a plurality of input signals from a plurality of different channels, and a plurality of demodulators each operatively coupled with the amplifier for receiving amplified input signals from the amplifier. Each demodulator is configured to demodulate a single amplified input channel signal from a single channel of the plurality of different channels. The system thus also has a plurality of filters, coupled with each of the demodulators, for mitigating the noise.
Claims21
An amplifier system comprising:
- an amplifier for amplifying a plurality of input signals from a plurality of different channels;
- a plurality of demodulators operatively coupled with the amplifier for receiving amplified input signals of the plurality of channels from the amplifier, each demodulator being configured to demodulate a single amplified input channel signal from a single channel of the plurality of different channels, each demodulator producing noise related to at least one of the channels other than the single channel;
- a plurality of filters coupled with the demodulators, the filters mitigating the noise.
A system comprising:
- a MEMS device producing a first signal in a first channel and a second signal in a second channel;
- and
- an amplifier receiving the first and second signals and producing first and second output signals, the first and second output signals being in different channels.
A method of processing a signal comprising:
- controlling an amplifier comprising:
- amplifying an input signal having a plurality of different channels to produce an amplified input signal having the plurality of different channels;
- demodulating the amplified input signal to produce at least one demodulated signal for each channel, demodulating causing each demodulated signal to have noise relating to at least one other channel;
- and
- filtering each demodulated signal to mitigate the noise to produce a baseband signal for each of the plurality of channels;
- and
- forwarding each baseband signal from at least one output node.
4 more elements
Dependencies are inferred from the claim text.