Two compact power-combining CMOS VCOs with excellent 2nd-harmonic rejection using three-conductor coupled-line

Ren Hua Chang; Sen Wang; Cheng Chieh Teng

doi:10.1109/MWSYM.2015.7166780

Two compact power-combining CMOS VCOs with excellent 2^nd-harmonic rejection using three-conductor coupled-line

Ren Hua Chang
, Sen Wang
, Cheng Chieh Teng

Department of Electronic Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

This paper presents two novel differential power-combining VCOs using a modified Marchand balun. The balun incorporating three-conductor coupled-lines achieves a high coupling coefficient to obtain a low-loss power combination of fundamental signals. And the two compact designs are realized by meandering the edge-coupled lines. Moreover, the balun not only acts as a part of LC tank but also suppresses the 2^nd-harmonic signals significantly. An NMOS-based VCO and a PMOS-based VCO are both designed at X-band and are fabricated in a standard 0.18-μm CMOS process to demonstrate the design methodology. The NMOS-/PMOS-based VCOs feature -1.8/-3.3-dBm output power and 33.3/43.6-dB 2^nd-harmonic rejection with power consumption of 4.8/8 mW.

Original language	English
Title of host publication	2015 IEEE MTT-S International Microwave Symposium, IMS 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479982752
DOIs	https://doi.org/10.1109/MWSYM.2015.7166780
State	Published - 24 Jul 2015
Event	IEEE MTT-S International Microwave Symposium, IMS 2015 - Phoenix, United States Duration: 17 May 2015 → 22 May 2015

Publication series

Name	2015 IEEE MTT-S International Microwave Symposium, IMS 2015

Conference

Conference	IEEE MTT-S International Microwave Symposium, IMS 2015
Country/Territory	United States
City	Phoenix
Period	17/05/15 → 22/05/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

Marchand balun
VCO
coupled lines
power-combining

Access to Document

10.1109/MWSYM.2015.7166780

Cite this

Chang, R. H., Wang, S., & Teng, C. C. (2015). Two compact power-combining CMOS VCOs with excellent 2^nd-harmonic rejection using three-conductor coupled-line. In 2015 IEEE MTT-S International Microwave Symposium, IMS 2015 Article 7166780 (2015 IEEE MTT-S International Microwave Symposium, IMS 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSYM.2015.7166780

@inproceedings{5f6b6854fd9841fb83c5829c23b3abff,

title = "Two compact power-combining CMOS VCOs with excellent 2nd-harmonic rejection using three-conductor coupled-line",

abstract = "This paper presents two novel differential power-combining VCOs using a modified Marchand balun. The balun incorporating three-conductor coupled-lines achieves a high coupling coefficient to obtain a low-loss power combination of fundamental signals. And the two compact designs are realized by meandering the edge-coupled lines. Moreover, the balun not only acts as a part of LC tank but also suppresses the 2nd-harmonic signals significantly. An NMOS-based VCO and a PMOS-based VCO are both designed at X-band and are fabricated in a standard 0.18-μm CMOS process to demonstrate the design methodology. The NMOS-/PMOS-based VCOs feature -1.8/-3.3-dBm output power and 33.3/43.6-dB 2nd-harmonic rejection with power consumption of 4.8/8 mW.",

keywords = "Marchand balun, VCO, coupled lines, power-combining",

author = "Chang, \{Ren Hua\} and Sen Wang and Teng, \{Cheng Chieh\}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; IEEE MTT-S International Microwave Symposium, IMS 2015 ; Conference date: 17-05-2015 Through 22-05-2015",

year = "2015",

month = jul,

day = "24",

doi = "10.1109/MWSYM.2015.7166780",

language = "???core.languages.en\_GB???",

series = "2015 IEEE MTT-S International Microwave Symposium, IMS 2015",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

booktitle = "2015 IEEE MTT-S International Microwave Symposium, IMS 2015",

}

Chang, RH, Wang, S & Teng, CC 2015, Two compact power-combining CMOS VCOs with excellent 2^nd-harmonic rejection using three-conductor coupled-line. in 2015 IEEE MTT-S International Microwave Symposium, IMS 2015., 7166780, 2015 IEEE MTT-S International Microwave Symposium, IMS 2015, Institute of Electrical and Electronics Engineers Inc., IEEE MTT-S International Microwave Symposium, IMS 2015, Phoenix, United States, 17/05/15. https://doi.org/10.1109/MWSYM.2015.7166780

Two compact power-combining CMOS VCOs with excellent 2^nd-harmonic rejection using three-conductor coupled-line. / Chang, Ren Hua; Wang, Sen; Teng, Cheng Chieh.
2015 IEEE MTT-S International Microwave Symposium, IMS 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7166780 (2015 IEEE MTT-S International Microwave Symposium, IMS 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Two compact power-combining CMOS VCOs with excellent 2nd-harmonic rejection using three-conductor coupled-line

AU - Chang, Ren Hua

AU - Wang, Sen

AU - Teng, Cheng Chieh

PY - 2015/7/24

Y1 - 2015/7/24

N2 - This paper presents two novel differential power-combining VCOs using a modified Marchand balun. The balun incorporating three-conductor coupled-lines achieves a high coupling coefficient to obtain a low-loss power combination of fundamental signals. And the two compact designs are realized by meandering the edge-coupled lines. Moreover, the balun not only acts as a part of LC tank but also suppresses the 2nd-harmonic signals significantly. An NMOS-based VCO and a PMOS-based VCO are both designed at X-band and are fabricated in a standard 0.18-μm CMOS process to demonstrate the design methodology. The NMOS-/PMOS-based VCOs feature -1.8/-3.3-dBm output power and 33.3/43.6-dB 2nd-harmonic rejection with power consumption of 4.8/8 mW.

AB - This paper presents two novel differential power-combining VCOs using a modified Marchand balun. The balun incorporating three-conductor coupled-lines achieves a high coupling coefficient to obtain a low-loss power combination of fundamental signals. And the two compact designs are realized by meandering the edge-coupled lines. Moreover, the balun not only acts as a part of LC tank but also suppresses the 2nd-harmonic signals significantly. An NMOS-based VCO and a PMOS-based VCO are both designed at X-band and are fabricated in a standard 0.18-μm CMOS process to demonstrate the design methodology. The NMOS-/PMOS-based VCOs feature -1.8/-3.3-dBm output power and 33.3/43.6-dB 2nd-harmonic rejection with power consumption of 4.8/8 mW.

KW - Marchand balun

KW - VCO

KW - coupled lines

KW - power-combining

UR - https://www.scopus.com/pages/publications/84946054882

U2 - 10.1109/MWSYM.2015.7166780

DO - 10.1109/MWSYM.2015.7166780

M3 - ???researchoutput.researchoutputtypes.contributiontobookanthology.conference???

AN - SCOPUS:84946054882

T3 - 2015 IEEE MTT-S International Microwave Symposium, IMS 2015

BT - 2015 IEEE MTT-S International Microwave Symposium, IMS 2015

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - IEEE MTT-S International Microwave Symposium, IMS 2015

Y2 - 17 May 2015 through 22 May 2015

ER -