发明授权
- 专利标题： Polar modulation apparatus and method with common-mode control
- 专利标题（中）： 具有共模控制的极性调制装置和方法
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申请号： US12093704申请日： 2006-11-01
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公开(公告)号： US08106720B2公开(公告)日： 2012-01-31
- 发明人: Mihai A. T. Sanduleanu , Ram P. Aditham , Eduard F. Stikvoort
- 申请人： Mihai A. T. Sanduleanu , Ram P. Aditham , Eduard F. Stikvoort
- 申请人地址： NL Eindhoven
- 专利权人： NXP B.V.
- 当前专利权人： NXP B.V.
- 当前专利权人地址： NL Eindhoven
- 优先权： EP05110928 20051118
- 国际申请： PCT/IB2006/054040 WO 20061101
- 国际公布： WO2007/057804 WO 20070524
- 主分类号： H03C3/38
- IPC分类号： H03C3/38 ; H03C1/50 ; H04B1/02
摘要：
The present invention relates to a polar modulation apparatus and method, in which a polar-modulated signal is generated based on separately processed phase modulation (PM) and amplitude modulation (AM) components of an input signal. An amplified polar modulated output signal is generated in accordance with the phase modulation and amplitude modulation components by using a differential power amplifier circuitry and supplying an amplified phase modulation component to a differential input of the differential power amplifier circuitry. A bias input of the differential power amplifier circuitry is controlled based on the amplitude modulation component, so as to modulate a common-mode current of the differential power amplifier circuitry. Thereby, a new concept of a polar modulator with static DC-DC converter and power and/or efficiency and/or linearity controlled output power amplifier can be achieved.