REDUCED BANDWITH OF SIGNAL IN AN ENVELOPE PATH FOR ENVELOPE TRACKING SYSTEM
First Claim
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1. An envelope tracking power amplifier system comprising an RF path and an envelope path, the envelope path comprising:
- a plurality of envelope detectors for detecting the envelope of a plurality of frequency bands of an input signal and each generating an output signal; and
a combiner for combining the output of the envelope detectors.
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Abstract
An envelope tracking power amplifier system comprising an RF input path and an envelope path for providing a modulated power amplifier supply, further comprising a plurality of envelope detectors for detecting the envelope of a plurality of frequency bands of an input signal and each generating an output signal, and a combiner for combining the output of the envelope detectors.
34 Citations
20 Claims
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1. An envelope tracking power amplifier system comprising an RF path and an envelope path, the envelope path comprising:
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a plurality of envelope detectors for detecting the envelope of a plurality of frequency bands of an input signal and each generating an output signal; and a combiner for combining the output of the envelope detectors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for an envelope tracking power amplifier system comprising an RF path and an envelope path, the method comprising:
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detecting the envelope of a plurality of contiguous frequency bands of an input signal in a plurality of envelope detectors, each generating an output signal; and combining the output of the envelope detectors. - View Dependent Claims (14, 15, 16)
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17. A method for an envelope tracking power amplifier system comprising an RF input path and an envelope path for providing a modulated power amplifier supply, the method comprising:
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detecting the envelope of a plurality of frequency bands of an input signal in a plurality of envelope detectors, each generating an output signal; and combining the output of the envelope detectors to provide a composite envelope signal. - View Dependent Claims (18, 19, 20)
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Specification