A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO
This paper implements a complementary Class-C digitally controlled oscillator (DCO) with differential transistor pairs. The transistors are dynamically biased by feedback loops separately benefiting the robust oscillation start-up with low power consumption. By optimizing three switched capacitor ar...
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Series: | Wireless Communications and Mobile Computing |
Online Access: | http://dx.doi.org/10.1155/2018/4968391 |
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doaj-b2c4213bf50b45678e565f8dba5198322020-11-24T23:34:34ZengHindawi-WileyWireless Communications and Mobile Computing1530-86691530-86772018-01-01201810.1155/2018/49683914968391A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCOLei Ma0Na Yan1Sizheng Chen2Yangzi Liu3Hao Min4State Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, ChinaState Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, ChinaState Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, ChinaState Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, ChinaState Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, ChinaThis paper implements a complementary Class-C digitally controlled oscillator (DCO) with differential transistor pairs. The transistors are dynamically biased by feedback loops separately benefiting the robust oscillation start-up with low power consumption. By optimizing three switched capacitor arrays and employing fractional capacitor array with sigma-delta modulator (SDM), the presented DCO operates from 3.22 GHz to 5.45 GHz with a 51.5% frequency tuning range and 0.1 ppm frequency resolution. The design was implemented in a 65 nm CMOS process with power consumption of 2.8 mA at 1.2 V voltage supply. Measurement results show that the phase noise is about −126 dBc/Hz at 3 MHz offset from a 5.054 GHz carrier frequency with the 1/f3 corner frequency of 260 KHz. The resulting FoMT achieves 199.4 dBc/Hz and varies less than 2 dB across the frequency tuning range.http://dx.doi.org/10.1155/2018/4968391 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Lei Ma Na Yan Sizheng Chen Yangzi Liu Hao Min |
spellingShingle |
Lei Ma Na Yan Sizheng Chen Yangzi Liu Hao Min A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO Wireless Communications and Mobile Computing |
author_facet |
Lei Ma Na Yan Sizheng Chen Yangzi Liu Hao Min |
author_sort |
Lei Ma |
title |
A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO |
title_short |
A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO |
title_full |
A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO |
title_fullStr |
A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO |
title_full_unstemmed |
A 3.22–5.45 GHz and 199 dBc/Hz FoMT CMOS Complementary Class-C DCO |
title_sort |
3.22–5.45 ghz and 199 dbc/hz fomt cmos complementary class-c dco |
publisher |
Hindawi-Wiley |
series |
Wireless Communications and Mobile Computing |
issn |
1530-8669 1530-8677 |
publishDate |
2018-01-01 |
description |
This paper implements a complementary Class-C digitally controlled oscillator (DCO) with differential transistor pairs. The transistors are dynamically biased by feedback loops separately benefiting the robust oscillation start-up with low power consumption. By optimizing three switched capacitor arrays and employing fractional capacitor array with sigma-delta modulator (SDM), the presented DCO operates from 3.22 GHz to 5.45 GHz with a 51.5% frequency tuning range and 0.1 ppm frequency resolution. The design was implemented in a 65 nm CMOS process with power consumption of 2.8 mA at 1.2 V voltage supply. Measurement results show that the phase noise is about −126 dBc/Hz at 3 MHz offset from a 5.054 GHz carrier frequency with the 1/f3 corner frequency of 260 KHz. The resulting FoMT achieves 199.4 dBc/Hz and varies less than 2 dB across the frequency tuning range. |
url |
http://dx.doi.org/10.1155/2018/4968391 |
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