发明公开
- 专利标题： IMPROVED RESONANCE SUPPRESSION FOR ENVELOPE TRACKING MODULATOR
- 专利标题（中）： 改进的包络跟踪调制器的共振抑制
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申请号： EP14704544.7申请日： 2014-01-31
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公开(公告)号： EP2951922A2公开(公告)日： 2015-12-09
- 发明人: WIMPENNY, Gerard
- 申请人： Snaptrack, Inc.
- 申请人地址： 5775 Morehouse Drive San Diego, CA 92121 US
- 专利权人： Snaptrack, Inc.
- 当前专利权人： Snaptrack, Inc.
- 当前专利权人地址： 5775 Morehouse Drive San Diego, CA 92121 US
- 代理机构： Williams, David John
- 优先权： GB201301855 20130201
- 国际公布： WO2014118341 20140807
- 主分类号： H03F1/02
- IPC分类号： H03F1/02 ; H03F3/217 ; H03F3/21 ; H02M3/158 ; H03F3/189 ; H03F3/24
摘要：
An envelope tracking power supply arranged to generate a modulated supply voltage in dependence on a reference signal, comprising a first path for tracking low frequency variations in the reference signal and a second path for tracking high frequency variations in the reference signal, and further comprising a combiner having a low frequency combining element for the first path and a high frequency combining element for the second path, and for generating the modulated supply voltage, wherein there is further provided sensing circuitry for sensing a resonance signal in the low or high frequency combining element, and adjusting circuitry for adjusting a signal in the first path in dependence on the sensed resonance signal.
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