发明授权
US07183844B2 Multi-state load switched power amplifier for polar modulation transmitter
有权
用于极性调制发射机的多状态负载开关功率放大器
- 专利标题: Multi-state load switched power amplifier for polar modulation transmitter
- 专利标题(中): 用于极性调制发射机的多状态负载开关功率放大器
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申请号: US11026444申请日: 2004-12-30
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公开(公告)号: US07183844B2公开(公告)日: 2007-02-27
- 发明人: Armin W. Klomsdorf , Greg R. Black , Dale G. Schwent
- 申请人: Armin W. Klomsdorf , Greg R. Black , Dale G. Schwent
- 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 Charles W. Bethards
- 主分类号: H03G3/20
- IPC分类号: H03G3/20
摘要:
A polar modulation power amplifier circuit includes a control circuit (101) to determine and provide a load selection signal (127), wherein the load selection signal (127) is determined responsive to a requested power signal (119). A power amplifier (113) is responsive to a power control signal (141), for amplifying an RF signal (139) to produce an amplified signal (145), having an output power level. A variable impedance matching circuit (117) is responsive to the load selection signal (127), to adjust a relationship between the control level and the output power level, to produce a range-adjusted amplified signal (147).
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