NDLI: Low-Loss and Broadband Asymmetric Broadside-Coupled Balun for Mixer Design in 0.18-<formula formulatype=inline><tex>$mu{hbox {m}}$</tex></formula> CMOS Technology

Content Provider	IEEE Xplore Digital Library
Author	Hwann-Kaeo Chiou Tsung-Yu Yang
Copyright Year	1963
Abstract	This study presents an asymmetric broadside coupled balun with low-loss broadband characteristics for mixer designs. The correlation between balun impedance and a 3D multilayer CMOS structure are discussed and analyzed. Two asymmetric multilayer meander coupled lines are adopted to implement the baluns. Three balanced mixers that comprise three miniature asymmetric broadside coupled Marchand baluns are implemented to demonstrate the applicability to MOS technology. Both a single and dual balun occupy an area of only 0.06 mm². The balun achieves a measured bandwidth of over 120%, an insertion loss of better than 4.1 dB (3 dB for an ideal balun) at the center frequency, an amplitude imbalance of less than 1 dB, and a phase imbalance of less than 5deg from 10 to 60 GHz. The first demonstrated circuit is a Ku-band mixer, which is implemented with a miniaturized balun to reduce the chip area by 80%. This 17-GHz mixer yields a conversion loss of better than 6.8 dB with a chip size of 0.24 mm². The second circuit is a 15-60-GHz broadband single-balanced mixer, which achieves a conversion loss of better than 15 dB and occupies a chip area of 0.24 mm². A three-conductor miniaturized dual balun is then developed for use in the third mixer. This star mixer incorporates two miniature dual baluns to achieve a conversion loss of better than 15 dB from 27 to 54 GHz, and occupies a chip area of 0.34 mm².
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	835
Ending Page	848
Page Count	14
File Size	3351120
File Format	PDF
ISSN	00189480
Volume Number	56
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance matching Nonhomogeneous media Circuits Mixers CMOS technology Frequency measurement Loss measurement Phase measurement Bandwidth Insertion loss silicon monolithic microwave integrated circuit (MMIC) Asymmetric broadside coupled balun CMOS millimeter wave mixer
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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