A 0.7 to 3 GHz wireless receiver front end in 65-nm CMOS with an LNA linearized by positive feedback
(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}}, }