Radio frequency system with switch to receive envelope
First Claim
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1. A power amplifier system comprising:
- an envelope generator configured to generate an envelope signal corresponding to an envelope of a radio frequency signal;
a power amplifier coupled to the envelope generator, the power amplifier configured to amplify the radio frequency signal and to receive a power amplifier supply voltage that is based on the envelope of the radio frequency signal; and
a radio frequency switch coupled to an output of the power amplifier, the radio frequency switch configured to receive the envelope signal from the envelope generator to cause intermodulation distortion associated with the radio frequency switch to be reduced.
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Abstract
Aspects of this disclosure relate to a radio frequency system that includes an envelope generator configured to generate an envelope signal corresponding to an envelope of a radio frequency signal and at least two radio frequency components coupled to the envelope generator. One of the radio frequency components is a radio frequency switch configured to pass the radio frequency signal. The radio frequency switch is configured to receive the envelope signal to cause intermodulation distortion associated with the radio frequency switch to be reduced.
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Citations
20 Claims
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1. A power amplifier system comprising:
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an envelope generator configured to generate an envelope signal corresponding to an envelope of a radio frequency signal; a power amplifier coupled to the envelope generator, the power amplifier configured to amplify the radio frequency signal and to receive a power amplifier supply voltage that is based on the envelope of the radio frequency signal; and a radio frequency switch coupled to an output of the power amplifier, the radio frequency switch configured to receive the envelope signal from the envelope generator to cause intermodulation distortion associated with the radio frequency switch to be reduced. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radio frequency system comprising:
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an envelope generator configured to generate an envelope signal corresponding to an envelope of a radio frequency signal; a radio frequency switch configured to pass the radio frequency signal, the radio frequency switch configured to receive the envelope signal to cause intermodulation distortion associated with the radio frequency switch to be reduced; and an other radio frequency component coupled to the envelope generator. - View Dependent Claims (13, 14, 15)
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16. A method of switching a radio frequency signal with improved linearity, the method comprising:
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generating, with an envelope generator, an envelope signal corresponding to an envelope of a radio frequency signal; providing a power amplifier supply voltage to a power amplifier that is coupled to the envelope generator by way of an envelope tracking modulator; applying the envelope signal to a radio frequency switch configured to receive the radio frequency signal from the power amplifier; and switching the radio frequency signal using the radio frequency switch during said applying so as to reduce intermodulation distortion associated with the radio frequency switch. - View Dependent Claims (17, 18, 19, 20)
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Specification