NDLI: 2.45-GHz CMOS Reflection-Type Phase-Shifter MMICs With Minimal Loss Variation Over Quadrants of Phase-Shift Range

Content Provider	IEEE Xplore Digital Library
Author	Jen-Chieh Wu Ting-Yueh Chin Sheng-Fuh Chang Chia-Chan Chang
Copyright Year	1963
Abstract	CMOS reflection-type phase shifters with minimal insertion-loss variation over quadrants of phase-shift range are presented. Two performance enhancement techniques are proposed. First, the 3-dB quadrature hybrid is designed with a phase-compensated inductively coupled hybrid. Second, an impedance-transformed pi-resonated varactor network is presented to provide a full 360deg phase range, using a MOSFET varactor with limited reactance variation range. The design considerations and simulation are described. Two experimental 2.45-GHz phase shifters were implemented in 0.18-mum CMOS technology. One has a measured phase-shift range of 120deg with the insertion loss of 5.6 plusmn 1.2 dB in 2.33-2.60 GHz and the other has a phase range larger than 340deg with the insertion loss of 10.6 plusmn 2 dB in 2.44-2.55 GHz. Both chips are extremely compact with sizes of 0.72 and 0.66 mm², respectively, and consume zero dc power.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	2180
Ending Page	2189
Page Count	10
File Size	2990403
File Format	PDF
ISSN	00189480
Volume Number	56
Issue Number	10
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	MMICs Phase shifters Varactors CMOS technology Insertion loss Impedance MOSFET circuits Loss measurement Phase measurement Semiconductor device measurement varactor CMOS inductively coupled hybrid phase shifter quadrature coupler reflection-type phase shifter (RTPS)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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