发明授权
- 专利标题： Radio frequency transmitter energy shifting during ramp-down
- 专利标题（中）： 射频发射机在减速期间移动能量
-
申请号： US12895255申请日： 2010-09-30
-
公开(公告)号： US08275330B1公开(公告)日： 2012-09-25
- 发明人: Nadim Khlat , Alexander Wayne Hietala
- 申请人： Nadim Khlat , Alexander Wayne Hietala
- 申请人地址： US NC Greensboro
- 专利权人： RF Micro Devices, Inc.
- 当前专利权人： RF Micro Devices, Inc.
- 当前专利权人地址： US NC Greensboro
- 代理机构： Withrow & Terranova, P.L.L.C.
- 主分类号： H04B1/04
- IPC分类号： H04B1/04
摘要：
The present disclosure relates to IQ modulation circuitry that during a data burst mode, modulates an RF carrier signal to provide a modulated RF signal, which is used for transmission of a transmit slot. During the data burst mode, a maximum energy spectrum peak of the modulated RF signal is about coincident with an RF carrier frequency of the RF carrier signal to comply with communications protocols. Further, during an energy-shifted ramp-down mode, which is coincident with ramp-down of the modulated RF signal, the IQ modulation circuitry modulates the RF carrier signal to provide the modulated RF signal. During the energy-shifted ramp-down mode, the maximum energy spectrum peak of the modulated RF signal is shifted away from the RF carrier frequency of the RF carrier signal to mitigate the effects of preparing for receiving an RF receive signal.
信息查询
