NDLI: A 4-bit CMOS Phase Shifter Using Distributed Active Switches

Content Provider	IEEE Xplore Digital Library
Author	Dong-Woo Kang Songcheol Hong
Copyright Year	1963
Abstract	This paper presents a novel 4-bit phase shifter using distributed active switches in 0.18-mum RF CMOS technology. The relative phase shift, which varies from 0deg to 360deg in steps of 22.5deg, is achieved with a 3-bit distributed phase shifter and a 180deg high-pass/low-pass phase shifter. The distributed phase shifter is implemented using distributed active switches that consist of a periodic placement of series inductors and cascode transistors, thereby obtaining linear phase shift versus frequency with a digital control. The design guideline of the distributed phase shifter is presented. The 4-bit phase shifter achieves 3.5 plusmn 0.5 dB of gain, with an rms phase error of 2.6deg at a center frequency of 12.1 GHz. The input and output return losses are less than -15 dB at all conditions. The chip size is 1880 mum times 915 mum including the probing pads.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	1476
Ending Page	1483
Page Count	8
File Size	1894194
File Format	PDF
ISSN	00189480
Volume Number	55
Issue Number	7
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Phase shifters Switches CMOS technology Insertion loss Varactors Transmission lines Gain Integrated circuit technology Radio frequency Phased arrays satellite communications CMOS distributed phase shifter phase shifters phased arrays
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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