A 60-GHz Millimeter-wave CMOS Marchand Balun

Author

Liu, J.-X. ; Hsu, C.Y. ; Chuang, H.-R. ; Chen, C.Y.

Author_Institution

Nat. Cheng Kung Univ., Tainan

fYear

2007

fDate

3-5 June 2007

Firstpage

445

Lastpage

448

Abstract

A novel 60-GHz wideband Marchand balun fabricated with a standard 0.18 mum 6-metal-layer CMOS process for millimeter-wave applications is presented. A technique for achieving good balance with the fourth metal layer microstrip conductor is used in the designed Marchand balun. The fabricated CMOS balun uses multilayer coupling with the top two layers. An output matching network is added to improve the output return loss. The measured amplitude imbalance was about plusmn 1.5 dB from 25 to 65 GHz , over the 89% operating frequency band.

Keywords

baluns; coupled circuits; microstrip circuits; millimetre wave amplifiers; frequency 60 GHz; microstrip conductor; millimeter-wave CMOS; multilayer coupling; output matching network; size 0.18 mum; wideband Marchand balun; CMOS process; CMOS technology; Coupling circuits; Impedance matching; Millimeter wave communication; Millimeter wave measurements; Millimeter wave radar; Millimeter wave technology; Nonhomogeneous media; Transmission line theory; CMOS; Marchand balun; millimeter-wave; multilayer coupling; shielding;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2007 IEEE

Conference_Location

Honolulu, HI

ISSN

1529-2517

Print_ISBN

1-4244-0530-0

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2007.380920

Filename

4266468