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US 2021/0344307 A1Published application
Load detection circuit and amplifier circuit
AssigneeMurata Manufacturing Co., Ltd.
InventorIkumi TOKUDA
Life of this patent
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Abstract
A load detection circuit includes a first detection part and a second detection part. The first detection part includes a first capacitor and a second capacitor, forms capacitive coupling with a signal transmission line connecting an output port of an RF amplifier and a load, and outputs a first signal. The second detection part includes a first inductor and a second inductor, forms inductive coupling with the signal transmission line, and outputs a second signal.
Claims18
A load detection circuit comprising:
- a first detection circuit that is capacitively coupled with a signal transmission line, and that is configured to output a first signal, the signal transmission line connecting an output port of a RF amplifier and a load;
- and
- a second detection circuit that is inductively coupled with the signal transmission line, and that is configured to output a second signal.
A load detection circuit comprising:
- a first detection circuit that is capacitively coupled with a signal transmission line, the signal transmission line connecting an output port of a RF amplifier and a load;
- and
- a second detection circuit that is inductively coupled with the signal transmission line, wherein:
- the first detection circuit and the second detection circuit are connected to each other,
- a first signal is output from the second detection circuit from a side of the second detection circuit that is closer to the load than to the output port of the RF amplifier, and
- a second signal is output from the second detection circuit from a side of the second detection circuit that is closer to the output port of the RF amplifier than to the load.
3 more elements
Dependencies are inferred from the claim text.