Power supply circuit, high-frequency power amplification circuit, and power supply control method
AssigneeNEC Corporation
InventorKiyohiko TAKAHASHI
Life of this patent
Estimating the term…
Abstract
A power supply circuit (10) includes: a linear amplifier (11) for generating a linear amplification signal based on an input signal; a first switching amplifier (12) for generating a first switching amplification signal of a first frequency band based on the linear amplification signal; a second switching amplifier (13) for generating a second switching amplification signal of a second frequency band based on the first switching amplification signal; and a power supply unit (14) for supplying a combined signal in which the linear amplification signal and the first and second switching amplification signals are combined to an external circuit as a power supply. It is therefore possible to improve the power efficiency.
Claims12
A power supply circuit comprising:
- a linear amplification unit that generates a linear amplification signal based on an input signal;
- a first switching amplification unit that generates a first switching amplification signal of a first frequency band based on the linear amplification signal;
- a second switching amplification unit that generates a second switching amplification signal of a second frequency band based on the first switching amplification signal;
- and
- a power supply unit that supplies a combined signal in which the linear amplification signal and the first and second switching amplification signals are combined to an external circuit as a power supply.
A high-frequency power amplification circuit comprising:
- a high-frequency power amplifier that amplifies a high-frequency modulation signal that is input;
- a linear amplification unit that generates a linear amplification signal based on an amplitude signal which is an amplitude component of the high-frequency modulation signal;
- a first switching amplification unit that generates a first switching amplification signal of a first frequency band based on the linear amplification signal;
- a second switching amplification unit that generates a second switching amplification signal of a second frequency band based on the first switching amplification signal;
- and
- a power supply unit that supplies a combined signal obtained by combining the linear amplification signal and the first and second switching amplification signals to the high-frequency power amplifier as a power supply.
A power supply control method in a power supply circuit, wherein:
- the power supply circuit generates a linear amplification signal based on an input signal,
- the power supply circuit generates a first switching amplification signal of a first frequency band based on the linear amplification signal,
- the power supply circuit generates a second switching amplification signal of a second frequency band based on the first switching amplification signal;
- and
- the power supply circuit supplies a combined signal obtained by combining the linear amplification signal and the first and second switching amplification signals to an external circuit as a power supply.
A power supply circuit comprising:
- a linear amplification means for generating a linear amplification signal based on an input signal;
- a first switching amplification means for generating a first switching amplification signal of a first frequency band based on the linear amplification signal;
- a second switching amplification means for generating a second switching amplification signal of a second frequency band based on the first switching amplification signal;
- and
- a power supply means for supplying a combined signal in which the linear amplification signal and the first and second switching amplification signals are combined to an external circuit as a power supply.
A high-frequency power amplification circuit comprising:
- a high-frequency power amplifier that amplifies a high-frequency modulation signal that is input;
- a linear amplification means for generating a linear amplification signal based on an amplitude signal which is an amplitude component of the high-frequency modulation signal;
- a first switching amplification means for generating a first switching amplification signal of a first frequency band based on the linear amplification signal;
- a second switching amplification means for generating a second switching amplification signal of a second frequency band based on the first switching amplification signal;
- and
- a power supply means for supplying a combined signal obtained by combining the linear amplification signal and the first and second switching amplification signals to the high-frequency power amplifier as a power supply.
Dependencies are inferred from the claim text.