发明名称 |
Bandpass delta-sigma analog-to-digital converters |
摘要 |
An apparatus includes a delta-sigma analog-to-digital converter for digitalizing an analog input signal. The DELTA - SIGMA ADC includes an analog band-pass loop filter 20 configured to filter an analog signal derived from the analog input signal and a quantizer 22 configured to produce a series of digital signals by sampling the filtered analog signal from the loop filter at a sampling frequency fs. The loop filter has a center band-pass frequency fbp. The series of digital signals has a data-carrying frequency spectrum that is a mirror image of a data-carrying frequency spectrum of the analog input signal. The data-carrying frequency spectrum of the series is located between the center band pass frequency and zero. <IMAGE>
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申请公布号 |
EP1569345(A1) |
申请公布日期 |
2005.08.31 |
申请号 |
EP20050250868 |
申请日期 |
2005.02.15 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
UT-VA, KOC;JAESIK, LEE |
分类号 |
H03M3/02;H03H17/04;H03M1/12;H03M3/00;(IPC1-7):H03M1/12 |
主分类号 |
H03M3/02 |
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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