NDLI: 60 GHz Reflection Type Phase Shifter based on liquid crystal

Content Provider	IEEE Xplore Digital Library
Author	Bulja, S. Mirshekar-Syahkal, D. Yazdanpanahi, M. James, R. Day, S.E. Fernandez, F.A.
Copyright Year	2010
Description	Author affiliation: Department of Electronic & Electrical Engineering, University College London, Torrington Place, WC1E 7JE, U.K. (James, R.; Day, S.E.; Fernandez, F.A.) \|\| School of Computer Science and Electronic Engineering, University of Essex, Colchester CO4 3SQ, U.K. (Bulja, S.; Mirshekar-Syahkal, D.; Yazdanpanahi, M.)
Abstract	For the first time, a compact 60 GHz band phase shifter incorporating liquid crystal (LC) is presented. Based on the Reflection Type Phase Shifter (RTPS) structure, it comprises a 3-dB coupler and tunable reflective loads formed on a nematic LC substrate. The LC used to form the substrate is known as E7. Biasing of the LC is achieved using an external electric field, allowing for the control of the reactance of the reflective loads. To facilitate on-wafer measurements and the application of the electric field to the LC, a transition from the microstrip line to the CPW is used. Preliminary measurement results for this RTPS show a differential phase shift of over 130 degrees, a figure of merit of 11.4° dB and return losses better than −10dB at 61 GHz.
Starting Page	697
Ending Page	699
File Size	603525
Page Count	3
File Format	PDF
ISBN	9781424447251
DOI	10.1109/RWS.2010.5434253
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-01-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Reflection Phase shifters Liquid crystals Microstrip Frequency Coplanar waveguides Phase measurement Coupling circuits Magnetic field measurement Dielectric loss measurement Reflection type phase shifter Dielectric anisotropy liquid crystal
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in