Radio-frequency circuit and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorKunitoshi Hanaoka
Life of this patent
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Abstract
A radio-frequency circuit is provided that includes a power amplifier, a control circuit, an on-off switch, a connection terminal, and a mount board. The power amplifier supports an APT system and an ET system. The control circuit controls the power amplifier by using the APT system and the ET system. The on-off switch is connected in series to a capacitive element connected between a path and the ground. The connection terminal is connected to the capacitive element. Moreover, the control circuit overlies the connection terminal in plan view in the thickness direction of the mount board.
Claims18
A radio-frequency circuit comprising:
- a power amplifier that has a power supply terminal, and that is configured to support an average power tracking system and an envelope tracking system;
- a control circuit that is connected to the power supply terminal, and that is configured to control the power amplifier by using the average power tracking system and the envelope tracking system;
- an on-off switch that is connected in series to a capacitive element connected between a ground and a path between the control circuit and the power supply terminal;
- a connection terminal that is connected to the capacitive element;
- and
- a mount board that has first and second principal surfaces that oppose each other,
- wherein the control circuit is disposed on the first principal surface of the mount board and the connection terminal is disposed on the second principal surface of the mount board, such that the control circuit overlies the connection terminal in a plan view in a thickness direction of the mount board, and
- wherein the capacitive element does not overlie the control circuit in the thickness direction of the mount board.
A radio-frequency circuit comprising:
- a power amplifier having a power supply terminal;
- a control circuit that is connected to the power supply terminal of the power amplifier;
- an on-off switch that is connected in series to a capacitive element connected between a ground and a path between the control circuit and the power supply terminal;
- a connection terminal that is connected to the capacitive element;
- and
- a mount board that has first and second principal surfaces that oppose each other,
- wherein the control circuit is disposed on the first principal surface of the mount board and the connection terminal is disposed on the second principal surface of the mount board, such that the control circuit overlies the connection terminal in a plan view of the mount board, and
- wherein the capacitive element does not overlie the control circuit in the thickness direction of the mount board.
Dependencies are inferred from the claim text.