Schlumberger Technology Corporation

Intersil Americas Inc.

Kidney Replacement Services P.c.

Marc Thompson

Yi-Qiao Song

Soumyajit Mandal

Shin Utsuzawa

Philip Golden

A broadband magnetic resonance (MR) receiver is described herein. The MR receiver can be used to process nuclear magnetic resonance (NMR) signals. The MR receiver includes a transformer that amplifies the MR signals and a preamplifier that receives the MR signals from the transformer. The preamplifier includes a common-drain amplifier stage and a common-source amplifier stage.

System and method for processing magnetic resonance signals

A circuit in accordance with an embodiment of the present invention includes an instrumentation amplifier, a dynamically adjustable low pass filter, at least one monitor and a controller. The instrumentation amplifier includes a pair of buffered operational amplifiers that accept a pair of input signals, and a differential operational amplifier that outputs an output signal indicative of a difference between the pair of input signals. The dynamically adjustable low pass filter is configured to provide band limiting of the output signal at frequencies greater than a cutoff frequency. The monitor, or monitors, is/are configured to monitor a signal upstream of the instrumentation amplifier and/or a signal downstream of the instrumentation amplifier and output a monitor signal. The controller is configured to receive the monitor signal, or signals, and to dynamically adjust output voltage noise at frequencies greater than the crossover frequency of the multipath amplifiers and/or the cutoff frequency of the low pass filter based on the monitor signal, or signals.

Dynamically adjustable low noise, low power instrumentation amplifier

An in-body power supply for supplying energy to an in-body device. The in-body power supply is configured to transfer energy to the in-body device and to compensate for variations and to receive energy without communication between the in-body power supply and an external power source outside the body.

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Harvard, MA, United States of America

Marc Thompson