{
  "$type": "site.standard.document",
  "description": "An apparatus includes a delta-sigma analog-to-digital converter for digitalizing an analog input signal. The Δ-Σ 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…",
  "path": "/patents/1074523",
  "publishedAt": "2005-08-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01M50/3425",
    "LUCENT TECHNOLOGIES INC [US]"
  ],
  "textContent": "An apparatus includes a delta-sigma analog-to-digital converter for digitalizing an analog input signal. The Δ-Σ 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 f. The loop filter has a center band-pass frequency f. 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.",
  "title": "Bandpass delta-sigma analog-to-digital converters"
}