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US 2024/0405735 A1Published application
Radio-frequency circuit and communication device
AssigneeMurata Manufacturing Co., Ltd.
InventorsKenji TAHARA, Kae YAMAMOTO
Life of this patent
Estimating the term…
Abstract
A radio-frequency circuit includes a carrier amplifier configured to amplify radio-frequency signals in a band A, a carrier amplifier configured to amplify radio-frequency signals in a band B, peak amplifiers configured to amplify radio-frequency signals in the band A and radio-frequency signals in the band B, a transformer having an input-side coil and an output-side coil, and phase shift lines.
Claims20
A radio-frequency circuit comprising:
- a first carrier amplifier configured to amplify a radio-frequency signal in a first band;
- a second carrier amplifier configured to amplify a radio-frequency signal in a second band;
- a first peak amplifier configured to amplify a radio-frequency signal in the first band and a radio-frequency signal in the second band;
- a second peak amplifier configured to amplify a radio-frequency signal in the first band and a radio-frequency signal in the second band;
- a transformer having an input-side coil and an output-side coil;
- and
- a first phase shifter circuit and a second phase shifter circuit, wherein
- an output terminal of the first peak amplifier is coupled to one end of the input-side coil,
- an output terminal of the second peak amplifier is coupled to another end of the input-side coil,
- an output terminal of the first carrier amplifier is coupled to one end of the first phase shifter circuit,
- an output terminal of the second carrier amplifier is coupled to one end of the second phase shifter circuit,
- another end of the first phase shifter circuit is coupled to one end of the output-side coil, and
- another end of the second phase shifter circuit is coupled to another end of the output-side coil.
10 more elements
A computer readable circuit that includes:
- a first carrier amplifier;
- a second carrier amplifier;
- a first peak amplifier;
- a second peak amplifier;
- a transformer having an input-side coil and an output-side coil;
- and
- a first phase shifter circuit and a second phase shifter circuit,
- a first capacitor coupled between the output terminal of the first peak amplifier and the output terminal of the second peak amplifier;
- and
- a first switch coupled to the first capacitor, between the output terminal of the first peak amplifier and the output terminal of the second peak amplifier,
- a radio frequency integrated circuit (RFIC) includes a an amplifier control circuit,
- wherein the amplifier control circuit switches the first switch to be closed and the RFIC transmits a first band high-frequency signal, or the amplifier control circuit switches the first switch to be opened and the RFIC transmits the second band high-frequency signal.
9 more elements
A communication device comprising:
- a signal processing circuit configured to process a radio-frequency signal,
- an antenna transmits the radio-frequency signal;
- and
- a radio-frequency circuit configured to transfer the radio-frequency signal between the signal processing circuit and an antenna,
- wherein the radio frequency circuit includes a first carrier amplifier configured to amplify a radio-frequency signal in a first band;
- a second carrier amplifier configured to amplify a radio-frequency signal in a second band;
- a first peak amplifier configured to amplify a radio-frequency signal in the first band and a radio-frequency signal in the second band;
- a second peak amplifier configured to amplify a radio-frequency signal in the first band and a radio-frequency signal in the second band;
- a transformer having an input-side coil and an output-side coil;
- and
- a first phase shifter circuit and a second phase shifter circuit, wherein
- an output terminal of the first peak amplifier is coupled to one end of the input-side coil,
- an output terminal of the second peak amplifier is coupled to another end of the input-side coil,
- an output terminal of the first carrier amplifier is coupled to one end of the first phase shifter circuit,
- an output terminal of the second carrier amplifier is coupled to one end of the second phase shifter circuit,
- another end of the first phase shifter circuit is coupled to one end of the output-side coil, and
- another end of the second phase shifter circuit is coupled to another end of the output-side coil.
14 more elements
Dependencies are inferred from the claim text.