发明名称 |
APPARATUS COMPRISING A SIGMA-DELTA MODULATOR AND METHOD OF GENERATING A QUANTIZED SIGNAL IN A SIGMA-DELTA MODULATOR |
摘要 |
<p>A method of generating a quantized signal in a Sigma-Delta modulator (25) comprises the steps of feeding a modulator input signal to a quantizer (15) via at least one integrator (12, 13); generating in the quantizer (15) a quantized signal; feeding back the quantized signal to be subtracted from the modulator input signal; and generating a dither signal to be applied to a point in the Sigma-Delta modulator. The dither signal is applied to a selected one of a number of different points (11, 14) in the Sigma-Delta modulator (25) in dependence of a control signal. In this way a method of generating a quantized signal in a Sigma-Delta modulator is provided which provides optimal results for different modes of the application, such as phase modulation mode and frequency modulation mode in a Bluetooth receiver.</p> |
申请公布号 |
WO2006002844(A1) |
申请公布日期 |
2006.01.12 |
申请号 |
WO2005EP06875 |
申请日期 |
2005.06.23 |
申请人 |
ERICSSON TECHNOLOGY LICENSING AB;EIKENBROEK, JOHANNES, WILHELMUS |
发明人 |
EIKENBROEK, JOHANNES, WILHELMUS |
分类号 |
H03L7/197;(IPC1-7):H03M3/02 |
主分类号 |
H03L7/197 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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