A 0.7 to 3 GHz wireless receiver front end in 65-nm CMOS with an LNA linearized by positive feedback
Nejdel, Anders LU ; Törmänen, Markus LU
and Sjöland, Henrik
LU
(2013)
In Analog Integrated Circuits and Signal Processing
74(1).
p.47-57
- Abstract
- This paper presents a wireless receiver frontend
intended for cellular applications implemented in a
65 nm CMOS technology. The circuit features a low noise
amplifier (LNA), quadrature passive mixers, and a frequency
divider generating 25 % duty cycle quadrature local
oscillator (LO) signals. A complementary common-gate
LNA is used, and to meet the stringent linearity requirements
it employs positive feedback with transistors biased
in the sub-threshold region, resulting in cancellation of the
third order non-linearity. The mixers are also linearized,
using a baseband to LO bootstrap circuit. Measurements of
the front-end show about 3.5 dB... (More) - This paper presents a wireless receiver frontend
intended for cellular applications implemented in a
65 nm CMOS technology. The circuit features a low noise
amplifier (LNA), quadrature passive mixers, and a frequency
divider generating 25 % duty cycle quadrature local
oscillator (LO) signals. A complementary common-gate
LNA is used, and to meet the stringent linearity requirements
it employs positive feedback with transistors biased
in the sub-threshold region, resulting in cancellation of the
third order non-linearity. The mixers are also linearized,
using a baseband to LO bootstrap circuit. Measurements of
the front-end show about 3.5 dB improvement in out-ofband
IIP3 at optimum bias of the positive feedback devices
in the LNA, resulting in an out-of-band IIP3 of 10 dBm.
With a frequency range from 0.7 to 3 GHz the receiver
front-end covers most important cellular bands, with an
input return loss above 9 dB and a voltage gain exceeding
16 dB for all bias settings. The circuit consumes 4.38 mA
from a 1.5 V supply. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3054052
- author
- Nejdel, Anders
LU
; Törmänen, Markus
LU
and Sjöland, Henrik
LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Positive feedback, Bootstrap passive mixer, Linearized receiver, RF, CMOS
- in
- Analog Integrated Circuits and Signal Processing
- volume
- 74
- issue
- 1
- pages
- 47 - 57
- publisher
- Springer
- external identifiers
-
- wos:000312769900006
- scopus:84871770377
- ISSN
- 0925-1030
- DOI
- 10.1007/s10470-012-9962-0
- project
- EIT_DARE Digitally-Assisted Radio Evolution
- language
- English
- LU publication?
- yes
- id
- fc10d5d9-8f9f-4643-924e-0191d6a94891 (old id 3054052)
- date added to LUP
- 2016-04-01 13:37:37
- date last changed
- 2024-01-09 16:18:44
@article{fc10d5d9-8f9f-4643-924e-0191d6a94891,
abstract = {{This paper presents a wireless receiver frontend<br/><br>
intended for cellular applications implemented in a<br/><br>
65 nm CMOS technology. The circuit features a low noise<br/><br>
amplifier (LNA), quadrature passive mixers, and a frequency<br/><br>
divider generating 25 % duty cycle quadrature local<br/><br>
oscillator (LO) signals. A complementary common-gate<br/><br>
LNA is used, and to meet the stringent linearity requirements<br/><br>
it employs positive feedback with transistors biased<br/><br>
in the sub-threshold region, resulting in cancellation of the<br/><br>
third order non-linearity. The mixers are also linearized,<br/><br>
using a baseband to LO bootstrap circuit. Measurements of<br/><br>
the front-end show about 3.5 dB improvement in out-ofband<br/><br>
IIP3 at optimum bias of the positive feedback devices<br/><br>
in the LNA, resulting in an out-of-band IIP3 of 10 dBm.<br/><br>
With a frequency range from 0.7 to 3 GHz the receiver<br/><br>
front-end covers most important cellular bands, with an<br/><br>
input return loss above 9 dB and a voltage gain exceeding<br/><br>
16 dB for all bias settings. The circuit consumes 4.38 mA<br/><br>
from a 1.5 V supply.}},
author = {{Nejdel, Anders and Törmänen, Markus and Sjöland, Henrik}},
issn = {{0925-1030}},
keywords = {{Positive feedback; Bootstrap passive mixer; Linearized receiver; RF; CMOS}},
language = {{eng}},
number = {{1}},
pages = {{47--57}},
publisher = {{Springer}},
series = {{Analog Integrated Circuits and Signal Processing}},
title = {{A 0.7 to 3 GHz wireless receiver front end in 65-nm CMOS with an LNA linearized by positive feedback}},
url = {{http://dx.doi.org/10.1007/s10470-012-9962-0}},
doi = {{10.1007/s10470-012-9962-0}},
volume = {{74}},
year = {{2013}},
}