发明授权
- 专利标题： Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals
- 专利标题（中）： 方法，设备，电话和基站，为可变包络射频信号提供包络跟踪
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申请号： US1762申请日： 1997-12-31
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公开(公告)号： US6141541A公开(公告)日： 2000-10-31
- 发明人: Pallab Midya , Lawrence E. Connell , Steven F. Gillig , John Grosspietsch , Andrew Merritt Khan , George Francis Opas , Robert Louis Palandech
- 申请人： Pallab Midya , Lawrence E. Connell , Steven F. Gillig , John Grosspietsch , Andrew Merritt Khan , George Francis Opas , Robert Louis Palandech
- 申请人地址： IL Schaumburg
- 专利权人： Motorola, Inc.
- 当前专利权人： Motorola, Inc.
- 当前专利权人地址： IL Schaumburg
- 主分类号： H03F1/02
- IPC分类号： H03F1/02 ; H04B7/005 ; H04W52/52 ; H04B1/02
摘要：
A method (200) and device (100) provide an efficient linear power amplifier that generates a variable-envelope radio frequency RF signal. The method includes the steps of: A) using an efficient envelope-following unit to output a supply voltage in accordance with a variable envelope of an input baseband signal, wherein using the efficient envelope-following unit includes: 1) using a bandwidth-limiting mapping unit to determine a reference signal based on the baseband signal; and 2) using an envelope-tracking power converter to output a supply voltage, responsive to the reference signal, to the linear RF power amplifier; B) providing an RF input signal with amplitude and phase information to a linear RF power amplifier; and C) using the linear RF power amplifier to output a power-efficient amplified variable-envelope RF signal with substantially a same amplitude and phase information as the RF input signal.
公开/授权文献
- US5358284A High temperature non-metallic expansion joint 公开/授权日：1994-10-25
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