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US 2018/0321365 A1Published application
Symmetric receiver switch for bipolar pulser
AssigneeButterfly Network, Inc.
InventorsKailiang Chen, Tyler S. Ralston, Keith G. Fife
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Abstract
Circuitry for ultrasound devices is described. A multilevel pulser is described, which can provide bipolar pulses of multiple levels. The multilevel pulser includes a pulsing circuit and pulser and feedback circuit. Symmetric switches are also described. The symmetric switches can be positioned as inputs to ultrasound receiving circuitry to block signals from the receiving circuitry.
Claims10
A method of operating an ultrasound device, comprising:
- providing a pulser signal to an ultrasonic transducer during a transmit mode of operation of the ultrasound device;
- operating a symmetric switch having an input terminal coupled between the ultrasonic transducer and a receiving circuit in an open state during the transmit mode of operation;
- operating the symmetric switch in a closed state during a receive mode of operation of the ultrasound device;
- and
- converting, using a current-to-voltage converter of the receiving circuit, a current from the ultrasonic transducer to a voltage during the receive mode of operation.
2 more elements
Dependencies are inferred from the claim text.