A novel approach to negative feedback in RX front-ends

Luca Vandi, Pietro Andreani, Tobias Tired, Sven Mattisson

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A new approach to negative feedback is proposed and applied to active mixer cells based on Gilbert multiplier. The feedback can be exploited in several ways, and different configurations are derived. A dual-loop topology provides a solution for inductor-less broad-band receiver stages. The nature of the dual loop ensures controlled gain and input matching, and a first-order linearity analysis is presented. A single-loop narrow-band topology is derived from more traditional implementations; main characteristics are examined thoroughly, with specific respect to input matching, noise and stability issues.
Original languageEnglish
Title of host publicationProceedings of IEEE 24th Norchip Conference
Publication date2006
ISBN (Print)1-4244-0772-9
Publication statusPublished - 2006
Event24th Norchip Conference - Linköping, Sweden
Duration: 20 Nov 200621 Nov 2006
Conference number: 24


Conference24th Norchip Conference

Bibliographical note

Copyright: 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE


  • feedback
  • RF
  • receiver
  • linearity
  • CMOS
  • mixer

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