Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler

This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonl...
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Autor*in:	Nai-Chung Kuo [verfasserIn] Jun-Chau Chien Niknejad, Ali M

Format:	Artikel
Sprache:	Englisch

Erschienen:	2015

Schlagwörter:	Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors

Übergeordnetes Werk:	Enthalten in: IEEE transactions on microwave theory and techniques - New York, NY : IEEE, 1963, 63(2015), 4, Seite 1130-1141
Übergeordnetes Werk:	volume:63 ; year:2015 ; number:4 ; pages:1130-1141

Links:	Volltext Link aufrufen Link aufrufen

DOI / URN:	10.1109/TMTT.2015.2407356

Katalog-ID:	OLC1963489187

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520			\|a This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells.
650		4	\|a Couplers
650		4	\|a size 65 nm
650		4	\|a LC-tank mismatch
650		4	\|a Performance evaluation
650		4	\|a passively coupled QVCO
650		4	\|a bidirectional current injection
650		4	\|a odd-order nonlinearity
650		4	\|a Accuracy
650		4	\|a field effect MMIC
650		4	\|a Phase noise
650		4	\|a phase accuracy
650		4	\|a modified diode
650		4	\|a conventional diode couplers
650		4	\|a K-band
650		4	\|a resistive couplers
650		4	\|a coupling cell
650		4	\|a doubled third-order nonlinearity
650		4	\|a bidirectionally coupled QVCO
650		4	\|a LC circuits
650		4	\|a passive nonlinear coupler
650		4	\|a CMOS integrated circuits
650		4	\|a CMOS
650		4	\|a nonlinear coupler
650		4	\|a frequency 26 GHz
650		4	\|a quadrature locking
650		4	\|a phase error
650		4	\|a waveguide couplers
650		4	\|a quadrature voltage-controlled oscillators (QVCOs)
650		4	\|a Couplings
650		4	\|a quadrature voltage-controlled oscillators
650		4	\|a voltage-controlled oscillators
650		4	\|a nonlinear capacitors
700	0		\|a Jun-Chau Chien \|4 oth
700	1		\|a Niknejad, Ali M \|4 oth
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allfields	10.1109/TMTT.2015.2407356 doi PQ20160617 (DE-627)OLC1963489187 (DE-599)GBVOLC1963489187 (PRQ)c1884-2b8ffc48d48309ed5281fd69740518b89e920610bf565d40db0f3ef14d693b2e0 (KEY)0017514520150000063000401130designandanalysisonbidirectionallyandpassivelycoup DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Nai-Chung Kuo verfasserin aut Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells. Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors Jun-Chau Chien oth Niknejad, Ali M oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 63(2015), 4, Seite 1130-1141 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:63 year:2015 number:4 pages:1130-1141 http://dx.doi.org/10.1109/TMTT.2015.2407356 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7056563 http://search.proquest.com/docview/1685228801 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2016 GBV_ILN_4313 GBV_ILN_4318 53.00 AVZ AR 63 2015 4 1130-1141
spelling	10.1109/TMTT.2015.2407356 doi PQ20160617 (DE-627)OLC1963489187 (DE-599)GBVOLC1963489187 (PRQ)c1884-2b8ffc48d48309ed5281fd69740518b89e920610bf565d40db0f3ef14d693b2e0 (KEY)0017514520150000063000401130designandanalysisonbidirectionallyandpassivelycoup DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Nai-Chung Kuo verfasserin aut Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells. Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors Jun-Chau Chien oth Niknejad, Ali M oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 63(2015), 4, Seite 1130-1141 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:63 year:2015 number:4 pages:1130-1141 http://dx.doi.org/10.1109/TMTT.2015.2407356 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7056563 http://search.proquest.com/docview/1685228801 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2016 GBV_ILN_4313 GBV_ILN_4318 53.00 AVZ AR 63 2015 4 1130-1141
allfields_unstemmed	10.1109/TMTT.2015.2407356 doi PQ20160617 (DE-627)OLC1963489187 (DE-599)GBVOLC1963489187 (PRQ)c1884-2b8ffc48d48309ed5281fd69740518b89e920610bf565d40db0f3ef14d693b2e0 (KEY)0017514520150000063000401130designandanalysisonbidirectionallyandpassivelycoup DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Nai-Chung Kuo verfasserin aut Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells. Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors Jun-Chau Chien oth Niknejad, Ali M oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 63(2015), 4, Seite 1130-1141 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:63 year:2015 number:4 pages:1130-1141 http://dx.doi.org/10.1109/TMTT.2015.2407356 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7056563 http://search.proquest.com/docview/1685228801 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2016 GBV_ILN_4313 GBV_ILN_4318 53.00 AVZ AR 63 2015 4 1130-1141
allfieldsGer	10.1109/TMTT.2015.2407356 doi PQ20160617 (DE-627)OLC1963489187 (DE-599)GBVOLC1963489187 (PRQ)c1884-2b8ffc48d48309ed5281fd69740518b89e920610bf565d40db0f3ef14d693b2e0 (KEY)0017514520150000063000401130designandanalysisonbidirectionallyandpassivelycoup DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Nai-Chung Kuo verfasserin aut Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells. Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors Jun-Chau Chien oth Niknejad, Ali M oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 63(2015), 4, Seite 1130-1141 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:63 year:2015 number:4 pages:1130-1141 http://dx.doi.org/10.1109/TMTT.2015.2407356 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7056563 http://search.proquest.com/docview/1685228801 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2016 GBV_ILN_4313 GBV_ILN_4318 53.00 AVZ AR 63 2015 4 1130-1141
allfieldsSound	10.1109/TMTT.2015.2407356 doi PQ20160617 (DE-627)OLC1963489187 (DE-599)GBVOLC1963489187 (PRQ)c1884-2b8ffc48d48309ed5281fd69740518b89e920610bf565d40db0f3ef14d693b2e0 (KEY)0017514520150000063000401130designandanalysisonbidirectionallyandpassivelycoup DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Nai-Chung Kuo verfasserin aut Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells. Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors Jun-Chau Chien oth Niknejad, Ali M oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 63(2015), 4, Seite 1130-1141 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:63 year:2015 number:4 pages:1130-1141 http://dx.doi.org/10.1109/TMTT.2015.2407356 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7056563 http://search.proquest.com/docview/1685228801 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_170 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2016 GBV_ILN_4313 GBV_ILN_4318 53.00 AVZ AR 63 2015 4 1130-1141
language	English
source	Enthalten in IEEE transactions on microwave theory and techniques 63(2015), 4, Seite 1130-1141 volume:63 year:2015 number:4 pages:1130-1141
sourceStr	Enthalten in IEEE transactions on microwave theory and techniques 63(2015), 4, Seite 1130-1141 volume:63 year:2015 number:4 pages:1130-1141
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topic_facet	Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors
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author	Nai-Chung Kuo
spellingShingle	Nai-Chung Kuo ddc 620 bkl 53.00 misc Couplers misc size 65 nm misc LC-tank mismatch misc Performance evaluation misc passively coupled QVCO misc bidirectional current injection misc odd-order nonlinearity misc Accuracy misc field effect MMIC misc Phase noise misc phase accuracy misc modified diode misc conventional diode couplers misc K-band misc resistive couplers misc coupling cell misc doubled third-order nonlinearity misc bidirectionally coupled QVCO misc LC circuits misc passive nonlinear coupler misc CMOS integrated circuits misc CMOS misc nonlinear coupler misc frequency 26 GHz misc quadrature locking misc phase error misc waveguide couplers misc quadrature voltage-controlled oscillators (QVCOs) misc Couplings misc quadrature voltage-controlled oscillators misc voltage-controlled oscillators misc nonlinear capacitors Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler
authorStr	Nai-Chung Kuo
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topic_title	620 DNB 53.00 bkl Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler Couplers size 65 nm LC-tank mismatch Performance evaluation passively coupled QVCO bidirectional current injection odd-order nonlinearity Accuracy field effect MMIC Phase noise phase accuracy modified diode conventional diode couplers K-band resistive couplers coupling cell doubled third-order nonlinearity bidirectionally coupled QVCO LC circuits passive nonlinear coupler CMOS integrated circuits CMOS nonlinear coupler frequency 26 GHz quadrature locking phase error waveguide couplers quadrature voltage-controlled oscillators (QVCOs) Couplings quadrature voltage-controlled oscillators voltage-controlled oscillators nonlinear capacitors
topic	ddc 620 bkl 53.00 misc Couplers misc size 65 nm misc LC-tank mismatch misc Performance evaluation misc passively coupled QVCO misc bidirectional current injection misc odd-order nonlinearity misc Accuracy misc field effect MMIC misc Phase noise misc phase accuracy misc modified diode misc conventional diode couplers misc K-band misc resistive couplers misc coupling cell misc doubled third-order nonlinearity misc bidirectionally coupled QVCO misc LC circuits misc passive nonlinear coupler misc CMOS integrated circuits misc CMOS misc nonlinear coupler misc frequency 26 GHz misc quadrature locking misc phase error misc waveguide couplers misc quadrature voltage-controlled oscillators (QVCOs) misc Couplings misc quadrature voltage-controlled oscillators misc voltage-controlled oscillators misc nonlinear capacitors
topic_unstemmed	ddc 620 bkl 53.00 misc Couplers misc size 65 nm misc LC-tank mismatch misc Performance evaluation misc passively coupled QVCO misc bidirectional current injection misc odd-order nonlinearity misc Accuracy misc field effect MMIC misc Phase noise misc phase accuracy misc modified diode misc conventional diode couplers misc K-band misc resistive couplers misc coupling cell misc doubled third-order nonlinearity misc bidirectionally coupled QVCO misc LC circuits misc passive nonlinear coupler misc CMOS integrated circuits misc CMOS misc nonlinear coupler misc frequency 26 GHz misc quadrature locking misc phase error misc waveguide couplers misc quadrature voltage-controlled oscillators (QVCOs) misc Couplings misc quadrature voltage-controlled oscillators misc voltage-controlled oscillators misc nonlinear capacitors
topic_browse	ddc 620 bkl 53.00 misc Couplers misc size 65 nm misc LC-tank mismatch misc Performance evaluation misc passively coupled QVCO misc bidirectional current injection misc odd-order nonlinearity misc Accuracy misc field effect MMIC misc Phase noise misc phase accuracy misc modified diode misc conventional diode couplers misc K-band misc resistive couplers misc coupling cell misc doubled third-order nonlinearity misc bidirectionally coupled QVCO misc LC circuits misc passive nonlinear coupler misc CMOS integrated circuits misc CMOS misc nonlinear coupler misc frequency 26 GHz misc quadrature locking misc phase error misc waveguide couplers misc quadrature voltage-controlled oscillators (QVCOs) misc Couplings misc quadrature voltage-controlled oscillators misc voltage-controlled oscillators misc nonlinear capacitors
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title	Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler
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title_full	Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler
author_sort	Nai-Chung Kuo
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title_sort	design and analysis on bidirectionally and passively coupled qvco with nonlinear coupler
title_auth	Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler
abstract	This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells.
abstractGer	This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells.
abstract_unstemmed	This paper studies quadrature voltage-controlled oscillators (QVCOs) employing bidirectional current injection from the two adjacent terminals and using a passive nonlinear coupler (BPN-QVCO). For such a QVCO to achieve quadrature locking while being robust to components mismatch, the odd-order nonlinearity of the coupling cell is essential and its significance in the performance merits is introduced. To verify the provided theory on BPN-QVCOs with resistive couplers, a modified diode is proposed as the coupling cell with doubled third-order nonlinearity for improved phase error without introducing additional capacitive loading. The proposed prototype and a standard 26-GHz BPN-QVCO using conventional diode couplers are fabricated in 65-nm CMOS. The phase error due to the LC-tank mismatch is demonstrated to be half with the proposed coupling cell, verifying the theory. The proposed theory also applies to BPN-QVCOs using nonlinear capacitors as coupling cells.
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container_issue	4
title_short	Design and Analysis on Bidirectionally and Passively Coupled QVCO With Nonlinear Coupler
url	http://dx.doi.org/10.1109/TMTT.2015.2407356 http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7056563 http://search.proquest.com/docview/1685228801
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doi_str	10.1109/TMTT.2015.2407356
up_date	2024-07-04T05:51:56.919Z
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