NDLI: Varactor-loaded left handed loop antenna with reconfigurable radiation patterns

Content Provider	IEEE Xplore Digital Library
Author	Liu, Q. Hall, P.S.
Copyright Year	2009
Description	Author affiliation: The University of Birmingham, Electronic, Electrical and Computer Engineering, B15 2TT, United Kingdom (Liu, Q.; Hall, P.S.)
Abstract	A varactor-loaded left handed loop antenna that has reconfigurable radiation patterns is described. The loop antenna uses a left-handed transmission line which is loaded with series capacitors and shunt inductors in a number of unit cells. The two wire transmission line is formed into a loop and fed at the break in the outer loop. The antenna has eight varactors in the four unit cells. Different radiation patterns can be obtained at the same frequency with variation of capacitance of the eight varactors. A prototype antenna implemented on FR4 substrate has dimensions of 150mm by 150mm with a line width of 1.4mm. The DC voltages are supplied to the varactors via the transmission lines by inserting slits in the strips. The antenna is analyzed by simulator “CST”. Simulated performance is also confirmed by measurements.
Starting Page	1
Ending Page	4
File Size	1155378
Page Count	4
File Format	PDF
ISBN	9781424436477
ISSN	15223965
DOI	10.1109/APS.2009.5171563
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Antenna radiation patterns Varactors Loaded antennas Transmission line antennas Capacitors Shunt (electrical) Inductors Wire Frequency Capacitance
Content Type	Text
Resource Type	Article

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