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US 9,793,592 B2Granted
RF coupler with decoupled state
AssigneeSkyworks Solutions, Inc.
InventorsNuttapong Srirattana, David Scott Whitefield, David Ryan Story
Life of this patent
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Abstract
Aspects of this disclosure relate to a radio frequency coupler with a decoupled state. In an embodiment, an apparatus includes a radio frequency coupler and a switch network. The radio frequency coupler has at least a power input port, a power output port, a coupled port, and an isolated port. The switch network can electrically connect a termination impedance to the isolated port in the first state, and the switch network can decouple an RF signal traveling between the power input port and the power output port from the isolated port and the coupled port in a second state.
Claims20
A radio frequency coupler comprising:
- a power input port, a power output port, a coupled port, and an isolation port;
- a main transmission line electrically connected between the power input port and the power output port, and configured to direct a radio frequency signal from the power input port to the power output port;
- a multi-section coupled line having a first section, a second section, and a third section, the multi-section coupled line electrically connected between the coupled port and the isolation port;
- a switch network configurable into at least a first state and a second state, the switch network configured to electrically connect a termination impedance to the isolation port in the first state, and the switch network configured to decouple the multi-section coupled line from the main transmission line in the second state, the multi-section coupled line being configured to electromagnetically couple a portion of the radio frequency signal from the main transmission line to provide a coupled signal at the coupled port responsive to the switch network being in the first state;
- and
- at least one coupling factor switch configured to adjust an effective length of the multi-section coupled line and to electrically isolate two adjacent sections of the multi-section coupled line responsive to the switch network being in the second state.
3 more elements
A radio frequency coupler comprising:
- a power input port, a power output port, a coupled port, and an isolation port;
- a main transmission line electrically connected between the power input port and the power output port, and configured to direct a radio frequency signal from the power input port to the power output port;
- a multi-section coupled line having a first section, a second section, and a third section, the multi-section coupled line electrically connected between the coupled port and the isolation port;
- a switch network configurable into at least a first state and a second state, the switch network configured to electrically connect a termination impedance to one of the isolation port or the coupled port in the first state, and the switch network configured to decouple the multi-section coupled line from the main transmission line in the second state, the multi-section coupled line being configured to electromagnetically couple a portion of the radio frequency signal from the main transmission line to provide a coupled signal at the coupled port responsive to the switch network being in the first state;
- and
- at least one coupling factor switch configured to adjust an effective length of the multi-section coupled line and to electrically isolate two adjacent sections of the multi-section coupled line responsive to the switch network being in the second state.
3 more elements
A radio frequency coupler comprising:
- a power input port, a power output port, a coupled port, and an isolation port;
- a main transmission line electrically connecting the power input port and the power output port;
- a multi-section coupled line having a first section, a second section, and a third section, the multi-section coupled line electrically connected between the coupled port and the isolation port;
- a switch network;
- and
- a control circuit configured to control the switch network to electrically isolate two adjacent sections of the multi-section coupled line and to electrically decouple the isolation port and the coupled port from one or more termination impedances in a first mode of operation to decouple the multi-section coupled line from the main transmission line, the control circuit further configured to control the switch network to electrically connect one of the coupled port or the isolation port to at least one of the one or more termination impedances in a second mode of operation to provide an indication of power of the radio frequency signal traveling between the power input port and the power output port, the multi-section coupled line being configured to electromagnetically couple a portion of the radio frequency signal from the main transmission line in the second mode of operation.
3 more elements
Dependencies are inferred from the claim text.