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A polyphase filter based on CMOS inverters

Författare:
Publiceringsår: 2005
Språk: Engelska
Sidor: 12-15
Dokumenttyp: Konferensbidrag
Förlag: IEEE Press

Sammanfattning

A new idea for generation of quadrature signals on chip is presented. The topology is based on a passive RC polyphase filter, where the resistive parts are made active by using inverters. The active filter combines quadrature generation, isolation, and gain without losing quadrature performance compared to a regular RC polyphase filter. The filter technique is demonstrated in a 10GHz front-end application where a broadband VCO drives an active polyphase filter to generate quadrature LO signals. By avoiding a quadrature VCO and tuned buffers, significant reductions in chip area are possible

Disputation

Nyckelord

  • Technology and Engineering
  • active filter
  • quadrature generation
  • 10 GHz
  • passive RC filter
  • tuned buffers
  • quadrature LO signals
  • voltage controlled oscillator
  • polyphase filter
  • CMOS inverters

Övriga

NORCHIP
2005-11-21/2005-11-22
Oulu, Finland
Published
Yes
  • ISBN: 1-4244-0064-3

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