发明申请
US20080175333A1 METHOD AND SYSTEM FOR DIGITAL TO ANALOG CONVERSION FOR POWER AMPLIFIER DRIVER AMPLITUDE MODULATION
有权
用于功率放大器驱动器调制的数字转换模数转换方法及系统
- 专利标题: METHOD AND SYSTEM FOR DIGITAL TO ANALOG CONVERSION FOR POWER AMPLIFIER DRIVER AMPLITUDE MODULATION
- 专利标题(中): 用于功率放大器驱动器调制的数字转换模数转换方法及系统
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申请号: US12039993申请日: 2008-02-29
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公开(公告)号: US20080175333A1公开(公告)日: 2008-07-24
- 发明人: Henrik Jensen , Alireza Zolfaghari
- 申请人: Henrik Jensen , Alireza Zolfaghari
- 主分类号: H04L27/02
- IPC分类号: H04L27/02 ; H03M3/00
摘要:
Aspects of a method and system for digital to analog conversion for power amplifier driver amplitude modulation are presented. Various aspects of the system may include circuitry that enables oversampling, within a single integrated circuit device, of each of a plurality of samples in a digital baseband signal. The circuitry may enable reduction of a number of bits, i.e., coarse quantization, in each of the oversampled plurality of samples so as to cause displacement of the quantization noise that occurred as a result of the coarse quantization. A subsequent signal may be generated based on the oversampled signal. The circuitry may enable the subsequent signal to be low-pass filtered utilizing filter circuitry in the single integrated circuit device, thereby attenuating the quantization noise displaced into the higher frequency range of the oversampled signal.
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