Supply modulator for power amplifier
First Claim
1. An apparatus comprising:
- a buck-boost converter;
a first buck converter connected at an output terminal of the buck-boost converter;
a second buck converter connected at the output terminal of the buck-boost converter;
a first linear amplifier (LA) comprising a first supply voltage input terminal connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the first buck converter, wherein the first LA is configured to provide a first modulated supply voltage to a first power amplifier (PA) of a first transmitter via the output terminal of the first LA; and
a second LA comprising a second supply voltage input terminal connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the second buck converter, wherein the second LA is configured to provide a second modulated supply voltage to a second PA of a second transmitter via the output terminal of the second LA.
1 Assignment
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Accused Products
Abstract
According to some example embodiments, an apparatus includes a buck-boost converter, a first buck converter connected at an output terminal of the buck-boost converter, a second buck converter connected at the output terminal of the buck-boost converter, a first LA including a first supply voltage input connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the first buck converter, where the first LA is configured to provide a first modulated supply voltage to a first PA of a first transmitter, and a second LA including a second supply voltage input connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the second buck converter, where the second LA is configured to provide a second modulated supply voltage to a second PA of a second transmitter.
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Citations
19 Claims
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1. An apparatus comprising:
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a buck-boost converter; a first buck converter connected at an output terminal of the buck-boost converter; a second buck converter connected at the output terminal of the buck-boost converter; a first linear amplifier (LA) comprising a first supply voltage input terminal connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the first buck converter, wherein the first LA is configured to provide a first modulated supply voltage to a first power amplifier (PA) of a first transmitter via the output terminal of the first LA; and a second LA comprising a second supply voltage input terminal connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the second buck converter, wherein the second LA is configured to provide a second modulated supply voltage to a second PA of a second transmitter via the output terminal of the second LA. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system comprising:
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a buck-boost converter; a first buck converter connected at an output terminal of the buck-boost converter; a second buck converter connected at the output terminal of the buck-boost converter; and a first linear amplifier (LA) comprising a first supply voltage input terminal connected to the output terminal of the buck-boost converter, and an output terminal connected to an output terminal of the first buck converter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method comprising:
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receiving an input voltage at an input terminal of an apparatus from a battery source; producing a first output voltage by modulating the input voltage to provide a first supply voltage to a first power amplifier in a first transmitter of an user equipment (UE); and producing a second output voltage by modulating the input voltage to provide a second supply voltage to a second power amplifier in a second transmitter of the UE, wherein the first output voltage is produced at an output terminal of a first linear amplifier (LA) and the second output voltage is produced at an output terminal of a second LA, wherein each of the first LA and the second LA receives a supply voltage from an output terminal of a buck-boost converter. - View Dependent Claims (19)
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Specification