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专利名称：DUAL MODE POWER AMPLIFIER发明人：HAGEMAN, MICHAEL, L.,BRANDT, DALE,
R.,RIPLEY, DAVID, S.
申请号：EP06825602申请日：20061006公开号：EP1941612A4公开日：20110126
摘要：A power amplifier (202, 330) is configured to operate in a first gain mode and asecond gain mode. A first power amplifier input stage (208, 308) has an input and anoutput. A second power amplifier input stage (210, 310) has an input and an output,where the output of the second power amplifier input stage is coupled to the output ofthe first power amplifier input stage. The first input stage is turned on in response to afirst bias voltage (222, 322) in the first gain mode and the second input stage is turned onin response to a second bias voltage (224, 324) in the second gain mode. Alternatively, afirst input stage (208, 308) and an intermediate stage (212, 312) can be switched off byturning off their respective bias voltages (222, 322, 226, 326), and a second input stage(210, 310) can be switched on by turning on its respective bias voltage (224, 324); theintermediate stage and the second input stage sharing a common output.
申请人：SKYWORKS SOLUTIONS, INC.
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