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A Positive Feedback Passive Mixer-First Receiver Front-End

Nejdel, Anders LU ; Abdulaziz, Mohammed LU ; Törmänen, Markus LU and Sjöland, Henrik LU (2015) IEEE Radio Frequency Integrated Circuits, RFIC 2015 In 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) p.79-82
Abstract
This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype for a direct conversion receiver has been implemented in 65nm CMOS, occupying an active area of 0.23mm2 with a frequency operation ranging from 0.7 to 3.8GHz. The prototype achieves a minimum noise figure of 2.5dB, an out-of-band 1dB compression point of +3dBm, with IIP3 and IIP2 exceeding +26 and +65dBm, respectively. The current consumption from a... (More)
This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype for a direct conversion receiver has been implemented in 65nm CMOS, occupying an active area of 0.23mm2 with a frequency operation ranging from 0.7 to 3.8GHz. The prototype achieves a minimum noise figure of 2.5dB, an out-of-band 1dB compression point of +3dBm, with IIP3 and IIP2 exceeding +26 and +65dBm, respectively. The current consumption from a 1.2V supply is between 22.8 and 62.8mA, depending on frequency operation. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)
pages
79 - 82
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Radio Frequency Integrated Circuits, RFIC 2015
external identifiers
  • scopus:84975704313
DOI
10.1109/RFIC.2015.7337709
project
EIT_DARE Digitally-Assisted Radio Evolution
language
English
LU publication?
yes
id
05d45412-ff66-4c02-b54c-38eb7260ee8b (old id 5052456)
date added to LUP
2015-02-23 13:36:21
date last changed
2017-02-12 04:28:35
@inproceedings{05d45412-ff66-4c02-b54c-38eb7260ee8b,
  abstract     = {This paper presents a technique to reduce the noise figure of a passive mixer-first receiver front-end. By using lower than 50Ω switch resistance in the current-mode passive mixer and introducing a positive feedback from baseband to the RF-input, it can be well matched close to fLO while achieving a noise figure below 3dB, which is otherwise a fundamental limit. A quadrature front-end prototype for a direct conversion receiver has been implemented in 65nm CMOS, occupying an active area of 0.23mm2 with a frequency operation ranging from 0.7 to 3.8GHz. The prototype achieves a minimum noise figure of 2.5dB, an out-of-band 1dB compression point of +3dBm, with IIP3 and IIP2 exceeding +26 and +65dBm, respectively. The current consumption from a 1.2V supply is between 22.8 and 62.8mA, depending on frequency operation.},
  author       = {Nejdel, Anders and Abdulaziz, Mohammed and Törmänen, Markus and Sjöland, Henrik},
  booktitle    = { 2015 IEEE Radio Frequency Integrated Circuits Symposium (RFIC)},
  language     = {eng},
  pages        = {79--82},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {A Positive Feedback Passive Mixer-First Receiver Front-End},
  url          = {http://dx.doi.org/10.1109/RFIC.2015.7337709},
  year         = {2015},
}