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US 10,447,242 B2Granted
Signal switching systems and modules and devices using same
AssigneeSkyworks Solutions, Inc.
InventorNuttapong Srirattana
Life of this patent
Estimating the term…
Abstract
A signal switch includes a first node and a second node. A first transistor is coupled between the first and second nodes, and a plurality of second transistors is coupled in series between the first and second nodes, in parallel with the first transistor. A shunt transistor and inductor, coupled in series, are firstly connected between two of the plurality of second transistors and are secondly connected to a reference node.
Claims16
A signal switch comprising:
- a first node and a second node;
- a first transistor coupled between the first and second nodes;
- a plurality of second transistors coupled in series between the first and second nodes, in parallel with the first transistor;
- a shunt path including a shunt transistor and an inductor coupled in series and having a first connection between two of the plurality of second transistors and a second connection at a reference node;
- a control input configured to receive a control signal and coupled to the first transistor, the plurality of second transistors, and the shunt transistor, the control input being configured to selectively control an operational state of the first transistor, the plurality of second transistors, and the shunt transistor to allow a signal to pass between the first and second nodes in a first operational state and to reject the signal from passing between the first and second nodes in a second operational state;
- and
- an inverter coupled between the control input and the shunt transistor, the inverter configured to apply the control signal to the shunt transistor to cause the shunt transistor to be in an opposing conductive state relative to a conductive state of the first transistor and the plurality of second transistors.
4 more elements
A switch module comprising:
- a first node, a second node, and a third node;
- a first transistor coupled between the first and second nodes;
- a plurality of second transistors coupled in series between the first and second nodes, in parallel with the first transistor;
- a third transistor coupled between the first and third nodes;
- a plurality of fourth transistors coupled in series between the first and third nodes, in parallel with the third transistor;
- a first shunt path including a first inductor-transistor circuit connected between a reference node and a connection point between two of the plurality of second transistors;
- and
- a second shunt path including a second inductor-transistor circuit connected between the reference node and a connection point between two of the plurality of fourth transistors.
5 more elements
An electronic device comprising:
- a transceiver coupled to a first node and configured to produce a transmit signal;
- a first transistor coupled between the first node and a second node;
- a plurality of second transistors coupled in series between the first and second nodes, in parallel with the first transistor;
- a shunt path including a shunt transistor and an inductor coupled in series and having a first connection between two of the plurality of second transistors and a second connection to a reference node;
- a control input configured to receive a control signal and coupled to the first transistor, the plurality of second transistors, and the shunt transistor, the control input being configured to selectively control an operational state of the first transistor, the plurality of second transistors, and the shunt transistor to allow a signal to pass between the first and second nodes in a first operational state and to reject a signal from passing between the first and second nodes in a second operational state;
- and
- an inverter configured so the control signal applied to the shunt transistor causes the shunt transistor to be in an opposing conductive state to that of the first transistor and the plurality of second transistors.
4 more elements
Dependencies are inferred from the claim text.