CPC H03F 1/0222 (2013.01) [H03F 3/193 (2013.01); H03F 3/211 (2013.01); H03F 3/45179 (2013.01); H03F 3/45475 (2013.01); H03F 2200/102 (2013.01); H03F 2200/171 (2013.01); H03F 2200/273 (2013.01); H03F 2200/378 (2013.01); H03F 2200/387 (2013.01); H03F 2200/393 (2013.01); H03F 2200/451 (2013.01); H03F 2203/21139 (2013.01); H03F 2203/21157 (2013.01); H03H 7/06 (2013.01)] | 20 Claims |
1. A device comprising:
a power amplifier configured to amplify a first signal based on a dynamic bias signal to produce an amplified signal at an output; and
a dynamic bias circuit comprising a filter and coupled to the power amplifier, wherein the dynamic bias circuit is configured to:
monitor the first signal;
generate the dynamic bias signal based on an output of the filter; and
output the dynamic bias signal, wherein the dynamic bias circuit comprises:
a first transistor having a current path coupled to the filter via a resistor; and
a second transistor having a current path coupled to the filter via the resistor.
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