NDLI: Wideband, Electrically Small, Planar, Coupled Subwavelength Resonator Antenna With an Embedded Matching Network

Content Provider	IEEE Xplore Digital Library
Author	Bai, J. Shi, S. Wilson, J. P. Nelson, R. Prather, D. W.
Copyright Year	1963
Abstract	A wideband, electrically small, planar, coupled D-ring subwavelength resonator antenna is presented. Two planar coupled D-ring resonators operating at even mode have been demonstrated experimentally to have a strong coupling to radiation. In this paper, we investigate a novel feeding method of driving the planar coupled D-rings to achieve a wide bandwidth. Dual-mode radiation is observed in the antenna. In one mode, the coupled D-ring driven by the inter-digital monopole acts as a major radiator resonating at a frequency of 1.7 GHz. In another mode, the driving monopole becomes a major radiator capable of resonating at a lower frequency of 1.2 GHz due to an embedded matching network comprised of the D-ring and a meandering line. As a result, the antenna can achieve an impedance bandwidth of 1 GHz–1.7 GHz. The antenna has a size, in terms of ka, of 0.49 to 0.75 over the bandwidth. The efficiency of the antenna is predicted to be very close to the upper bound given by the Chu limit.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	2388
Ending Page	2396
Page Count	9
File Size	2116634
File Format	PDF
ISSN	0018926X
Volume Number	61
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-05-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Impedance Couplings Resonant frequency Antennas Wideband Integrated circuit modeling wideband Chu limit electrically small metamaterial subwavelength
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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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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