Telecommunications – Transmitter – With feedback of modulated output signal
Reexamination Certificate
2006-10-03
2006-10-03
Moe, Aung (Department: 2618)
Telecommunications
Transmitter
With feedback of modulated output signal
C455S114300, C455S127100
Reexamination Certificate
active
07116951
ABSTRACT:
A transmitter circuit (200, 400, 510) and method reduces amplitude modulation distortion in an amplifier (210). The transmitter circuit (200, 400, 510) includes a power control error data generator (230), a feedforward predistortion data generator (240), feedforward adder logic (250) and the amplifier (210). The power control error data generator (230) receives amplitude modulation data (252) and an RF coupled output signal (254) and, in response, produces power control error data (256). The feedforward predistortion data generator (240) receives the amplitude modulation data (252) and, in response, produces feedforward predistortion data (258). The feedforward adder logic (250) receives the power control error data (256) and the feedforward predistortion data (258) and, in response, produces power control data (260). The amplifier (210) receives the power control data (260) and an RF input signal (261) and, in response, produces an RF output signal (262), such that the power control data (260) reduces amplitude modulation distortion in the RF output signal (262).
REFERENCES:
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Black Greg R.
Nagode Thomas D.
Nanni Peter
Nigra Louis M.
Tilley Keith Andrew
Moe Aung
Motorola Inc.
Vedder Price Kaufman & Kammholz P.C.
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