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US 11,888,509 B2Granted
Ultrasound transmit-receive switch with combined transmit-receive and return-to-zero path
AssigneeTexas Instruments Incorporated
InventorsAravind Miriyala, Ravikumar Pattipaka, Raja Sekhar Kanakamedala, Sandeep Kesrimal Oswal
Life of this patent
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Abstract
An ultrasound system includes a transmit-receive switch. The transmit-receive switch includes a combined transmit-receive and return-to-zero (RTZ) path. The combined transmit-receive and RTZ path includes a transistor with a first current terminal, a second current terminal, and a control terminal. The second current terminal of the transistor is coupled to a ground node via a first switch and is coupled to a receive node via a second switch. The ultrasound system also includes a receiver front-end circuit coupled to the receive node.
Claims24
A system, comprising:
- an ultrasound device comprising:
- a transmit-receive switch,
- wherein the transmit-receive switch comprises:
- a first N-type Field-Effect Transistor (NFET) having a gate, a drain and a source;
- a second NFET having a gate, a drain and a source wherein the drain of the second NFET is directly coupled to the drain of the first NFET;
- a first switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to ground;
- a second switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to a receive terminal;
- and
- a receiver front-end circuit, in which the receive terminal directly connects the transmit-receive switch to the receiver front-end circuitry.
6 more elements
A system, comprising:
- an ultrasound device comprising:
- a transmit-receive switch directly
- connected between a transmit terminal and a receive terminal, wherein the transmit-receive switch comprises:
- a first N-type Field-Effect Transistor (NFET) having a gate, a drain and a source;
- a second NFET having a gate, a drain and a source wherein the drain of the second NFET is directly coupled to the drain of the first NFET;
- a first switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to around;
- a second switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to a receive terminal;
- and
- a controller coupled to the gate of the first NFET, to the gate of the second NFET, to the first switch, and to the second switch;
- and
- a receiver front-end circuit, in which the receive terminal directly connects the transmit-receive switch to the receiver front-end circuitry.
8 more elements
A system, comprising:
- an ultrasound device comprising:
- a transmit-receive switch directly
- connected between a transmit terminal and a receive terminal, wherein the transmit-receive switch comprises:
- a first N-type Field-Effect Transistor (NFET) having a gate, a drain and a source;
- a second NFET having a gate, a drain and a source wherein the drain of the second NFET is directly coupled to the drain of the first NFET;
- a first switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to ground;
- a second switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to a receive terminal;
- a transmitter circuit, in which the transmit terminal directly connects the transmitter switch to the transmitter circuit;
- and
- a receiver front-end circuit, in which the receive terminal directly connects the transmit-receive switch to the receiver front-end circuitry.
7 more elements
A system, comprising:
- an ultrasound device comprising:
- a first N-type Field-Effect Transistor (NFET)
- having a gate, a drain and a source;
- a second NFET having a gate, a drain and a source wherein the drain of the second NFET is directly coupled to the drain of the first NFET;
- a first switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to ground;
- a second switch having a first terminal and a second terminal wherein the first terminal is directly coupled to the source of the first NFET and the second terminal is directly coupled to a receive terminal:
- a receiver front-end circuit directly connected to the receive node terminal.
4 more elements
Dependencies are inferred from the claim text.