发明名称 |
DISCRETE TIME LOWPASS FILTER |
摘要 |
A discrete time (DT) lowpass filter having various advantages is described. In an exemplary design, the DT lowpass filter includes a decimating DT filter (which may include a passive DT FIR filter and/or a passive DT IIR filter) and an active DT filter. The decimating DT filter receives a first DT signal at a first sample rate, filters and decimates the first DT signal by a factor of N, and provides a second DT signal at a second sample rate lower than the first sample rate. N may be greater than one. The active DT filter filters the second DT signal and provides a third DT signal at the second sample rate. A sampler samples a continuous time signal and provides the first DT signal. The sampler may further double the voltage of the first DT signal relative to the voltage of the continuous time signal. |
申请公布号 |
WO2011020070(A2) |
申请公布日期 |
2011.02.17 |
申请号 |
WO2010US45535 |
申请日期 |
2010.08.13 |
申请人 |
QUALCOMM INCORPORATED;FAGG, RUSSELL JOHN;BURKE, JOSEPH PATRICK |
发明人 |
FAGG, RUSSELL JOHN;BURKE, JOSEPH PATRICK |
分类号 |
H03H15/00 |
主分类号 |
H03H15/00 |
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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