Invention Application
- Patent Title: Transmitter circuit and method for modulation distortion compensation
- Patent Title (中): 发射机电路和调制失真补偿方法
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Application No.: US10737473Application Date: 2003-12-16
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Publication No.: US20050130609A1Publication Date: 2005-06-16
- Inventor: Thomas Nagode , Peter Nanni , Louis Nigra , Greg Black , Keith Tilley
- Applicant: Thomas Nagode , Peter Nanni , Louis Nigra , Greg Black , Keith Tilley
- Applicant Address: US IL Schaumburg
- Assignee: Motorola, Inc.
- Current Assignee: Motorola, Inc.
- Current Assignee Address: US IL Schaumburg
- Main IPC: H03C1/06
- IPC: H03C1/06 ; H03C3/09 ; H03F1/32 ; H04B1/04

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).
Public/Granted literature
- US07116951B2 Transmitter circuit and method for modulation distortion compensation Public/Granted day:2006-10-03
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