Apparatus and method for performing error corrected amplification in a radio frequency system
AssigneeMotorola, Inc.
InventorJames E. Mitzlaff
Life of this patent
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Abstract
An error corrected amplifier circuit (100) for use in a radio frequency system is provided. The error corrected amplifier circuit (100) includes a first pilot modulation stage (101) and a second pilot modulation stage (103). The first pilot modulation stage (101) creates a first amplified signal (129) having an error component and a first error signal (134) indicative of the error component. The second pilot modulation stage (103) receives the first amplified signal (129) and the error signal (134) and generates an error reduced amplified signal (158).
Claims20
An amplifier circuit for use in a radio frequency system comprising:
- a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component, said first pilot modulation stage comprising:
- a signal splitter receiving an input signal and generating a, first and second input signal;
- a Pilot modulator coupled to said signal splitter and receiving the first input signal;
- a phase and gain control circuit coupled to said signal splitter and receiving the second input signal;
- an amplifier responsive to the pilot modulator;
- and
- a coupler responsive to said amplifier and responsive to said phase and gain control circuit, said coupler generating said first amplified signal;
- and
- a second pilot modulation stage receiving the first amplified signal and the error signal and generating an error reduced amplified signal.
An error correcting radio frequency amplifier circuit comprising:
- an amplifier;
- a phase pilot source;
- a gain pilot source;
- a pilot modulator coupled to the amplifier;
- a first on/off switch selectively coupling the pilot modulator and the phase pilot source;
- and
- a second on/off switch selectively coupling the pilot modulator and the gain pilot source.
An amplifier circuit for use in a radio frequency system comprising:
- a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component;
- and
- a second pilot modulation stage receiving the first amplified signal and the error signal and generating an error reduced amplified signal, the second pilot modulation stage comprising:
- an error insertion coupler receiving said first amplified signal and said error signal;
- a second pilot modulator responsive to said error insertion coupler;
- and
- a main amplifier responsive to said second pilot modulator, said main amplifier generating said error reduced amplified signal.
An amplifier circuit for use in a radio frequency system comprising:
- a first pilot modulation stage creating a first amplified signal having an error component and an error signal indicative of the error component;
- a second pilot modulation stage responsive to the first amplified signal and the error signal and generating an error reduced amplified signal;
- and
- a third pilot modulator and a third amplifier coupled to said first pilot modulation stage.
Dependencies are inferred from the claim text.