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A polyphase filter based on CMOS inverters

Tillman, Fred LU and Sjöland, Henrik LU (2005) NORCHIP Conference, 2005 p.12-15
Abstract
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
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
active filter, quadrature generation, 10 GHz, passive RC filter, tuned buffers, quadrature LO signals, voltage controlled oscillator, polyphase filter, CMOS inverters
host publication
[Host publication title missing]
pages
12 - 15
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
NORCHIP Conference, 2005
conference location
Oulu, Finland
conference dates
2005-11-21 - 2005-11-22
external identifiers
  • wos:000241010100002
  • scopus:33847225222
ISBN
1-4244-0064-3
DOI
10.1109/NORCHP.2005.1596977
language
English
LU publication?
yes
id
c1f6bd19-695c-4553-bea2-13ad4cd990c3 (old id 616510)
date added to LUP
2016-04-04 11:14:40
date last changed
2022-01-29 21:36:20
@inproceedings{c1f6bd19-695c-4553-bea2-13ad4cd990c3,
  abstract     = {{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}},
  author       = {{Tillman, Fred and Sjöland, Henrik}},
  booktitle    = {{[Host publication title missing]}},
  isbn         = {{1-4244-0064-3}},
  keywords     = {{active filter; quadrature generation; 10 GHz; passive RC filter; tuned buffers; quadrature LO signals; voltage controlled oscillator; polyphase filter; CMOS inverters}},
  language     = {{eng}},
  pages        = {{12--15}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  title        = {{A polyphase filter based on CMOS inverters}},
  url          = {{http://dx.doi.org/10.1109/NORCHP.2005.1596977}},
  doi          = {{10.1109/NORCHP.2005.1596977}},
  year         = {{2005}},
}