发明授权
- 专利标题: Multiple bandwidth amplifier control systems for mobile stations and methods therefor
- 专利标题(中): 用于移动台的多带宽放大器控制系统及其方法
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申请号: US09854858申请日: 2001-05-14
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公开(公告)号: US06850574B2公开(公告)日: 2005-02-01
- 发明人: Dale G. Schwent , Alexander W. Hietala
- 申请人: Dale G. Schwent , Alexander W. Hietala
- 申请人地址: US IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: US IL Schaumburg
- 代理商 Ronald K. Bowler, II
- 主分类号: H03F3/189
- IPC分类号: H03F3/189 ; H03G1/00 ; H03G3/20 ; H03G3/30 ; H04B1/04 ; H04L27/20 ; H04L27/36 ; H04L25/03
摘要:
RF amplifier control circuits for transmitters in mobile communication devices, combinations thereof and methods therefor. The control circuits include generally proportional and integral control circuits having an output coupled to a control input of an amplifier. An initial control signal is applied to the amplifier before a vector modulator output coupled an input thereof is at full output power. The vector modulator output is ramped to full output after applying the initial control signal. Thereafter, the initial control signal applied to the amplifier during ramping is corrected by integrating an output of the amplifier relative to a second reference signal with an integral control circuit coupled to the control input of the amplifier, the second reference signal is proportional to the ramping vector modulator output.
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