Adjustable power splitter and corresponding methods and apparatus
AssigneeFreescale Semiconductor, Inc.
InventorsAbdulrhman M. S Ahmed, Mario M. Bokatius, Paul R. Hart, Joseph Staudinger, Richard E. Sweeney
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Abstract
An adjustable power splitter includes: a power divider with an input and a first and second divider output; a first adjustable phase shifter and first adjustable attenuator series coupled to the first divider output and providing a first power output; and a second adjustable phase shifter and second adjustable attenuator series coupled to the second divider output and providing a second power output.
Claims20
An adjustable power splitter comprising:
- a power divider including an input and a first and second divider output;
- a first adjustable phase shifter and first adjustable attenuator series coupled to the first divider output and providing a first power output;
- and
- a second adjustable phase shifter and second adjustable attenuator series coupled to the second divider output and providing a second power output,
- the first and second power output coupled to a Doherty power amplifier.
An adjustable power splitter comprising:
- a power divider including an input and a first and second divider output;
- a first adjustable phase shifter and first adjustable attenuator series coupled to the first divider output and providing a first power output;
- a second adjustable phase shifter and second adjustable attenuator series coupled to the second divider output and providing a second power output;
- and
- a fixed phase shifter configured for adding a fixed phase shift between first and second signals, the first and second signals at the first and second power outputs.
An adjustable power splitter comprising:
- a power divider including an input and a first and second divider output;
- a first adjustable phase shifter and first adjustable attenuator series coupled to the first divider output and providing a first power output;
- and
- a second adjustable phase shifter and second adjustable attenuator series coupled to the second divider output and providing a second power output;
- and
- a Doherty power amplifier with a main amplifier coupled to the first power output and a peaking amplifier coupled to the second power output.
A method of providing a power split signal comprising:
- splitting an input signal into first and second signals at a first and a second divider outputs;
- adjusting a phase shift and attenuation of the first signal to provide a first resultant signal at a first power output;
- adjusting a phase shift and attenuation of the second signal to provide a second resultant signal at a second power output;
- and
- providing a fixed phase shift between the first and second resultant signals.
Dependencies are inferred from the claim text.