## Abstract

A general technique for the design of undersampled LC bandpass modulators using feedback FIRDACs is proposed. The coefficients of the FIRDACs are used to increase the degrees of freedom in order to perform an exact equivalence between undersampled LC bandpass Sigma-Delta and high order DiscreteTime Sigma-Delta modulators. Using FIRDACs coefficients, it is also possible to simplify the circuit implementation by removing internal summing nodes and by decreasing coefficients spread. An undersampled 4th order LC Sigma-Delta is given as a design example. The effect of the undersampling ratio on the performance of finite quality factor LC Sigma-Delta modulators is also studied.

Original language | English (US) |
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Title of host publication | ISCAS 2006 |

Subtitle of host publication | 2006 IEEE International Symposium on Circuits and Systems, Proceedings |

Pages | 4427-4430 |

Number of pages | 4 |

State | Published - 2006 |

Externally published | Yes |

Event | ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems - Kos, Greece Duration: May 21 2006 → May 24 2006 |

### Other

Other | ISCAS 2006: 2006 IEEE International Symposium on Circuits and Systems |
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Country | Greece |

City | Kos |

Period | 05/21/06 → 05/24/06 |

## ASJC Scopus subject areas

- Electrical and Electronic Engineering