NDLI: A 0.13-<formula formulatype=inline><tex>$mu$</tex> </formula>m CMOS Phase Shifter Using Tunable Positive/Negative Refractive Index Transmission Lines

Content Provider	IEEE Xplore Digital Library
Author	Abdalla, M.A.Y. Phang, K. Eleftheriades, G.V.
Copyright Year	2001
Abstract	This letter presents a tunable positive/negative refractive index transmission line (TL) phase shifter utilizing active circuits. It comprises a microstrip TL loaded with series varactors and a shunt monolithic microwave integrated circuit (MMIC) to synthesize a tunable inductor. This implementation increases the phase tuning range and maintains the input and output matching of the phase shifter across the entire phase tuning range, while eliminating the need for bulky passive inductors. The phase shifter is capable of providing both positive and negative phase shifts. The MMIC tunable inductors are fabricated in a 0.13-mum CMOS process and operate from a 1.5-V supply. The phase shifter achieves a phase of -40deg to +34deg at 2.5GHz from a single stage with less than -19dB return loss, and better than 1.1-dB insertion loss at 2.5 GHz. The phase shifter has a 1-GHz bandwidth over which the return loss remains better than 12.1dB
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	705
Ending Page	707
Page Count	3
File Size	456136
File Format	PDF
ISSN	15311309
Volume Number	16
Issue Number	12
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-12-01
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 Tunable circuits and devices MMICs Active inductors Integrated circuit synthesis Circuit optimization Refractive index Distributed parameter circuits Active circuits Microstrip transmission lines (TLs) CMOS metamaterials monolithic microwave integrated circuit (MMIC) negative refractive index (NRI) phase shifters
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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