NDLI: Novel Compact and Low-Loss Phase Shifters With Magnetodielectric Disturber

Content Provider	IEEE Xplore Digital Library
Author	Guo-Min Yang Jing Lou Obi, O. Sun, N.X.
Copyright Year	2001
Abstract	Magnetodielectric materials show great potential in tunable phase shifter designs with their high relative permeability and high permittivity. This paper presents a novel compact and low-loss tunable S-band phase shifter with a magnetodielectric perturber on a meander line microstrip controlled by a piezoelectric transducer. Compared with traditional dielectric perturbation, the phase tunability of the meander line with magnetodielectric perturber is much larger while the insertion loss is not much affected. Self-biased NiCo-ferrite films were adopted to fabricate the magnetodielectric perturber, which is a ferrite/substrate/ferrite laminate sandwich structure on a commercially available Rogers dielectric substrate. Phase shifter designs with NiCo-ferrite films on one layer to three layers of the sandwich structure were compared and investigated. Relative phase shift of 40° and large phase shift per dB insertion loss of up to 500°/dB were observed at S-band. The proposed S-band phase shifters are compact and will have many potential applications in radars and wireless communication systems.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	240
Ending Page	242
Page Count	3
File Size	366518
File Format	PDF
ISSN	15311309
Volume Number	21
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-01
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 Ferrites Sandwich structures Insertion loss Positron emission tomography Microstrip tunable phase shifter Magnetic films meander line self-biased ferrite films
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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