NDLI: Design of a compact dualband quasi-isotropic antenna

Content Provider	IET Digital Library
Author	Kim, J. H. Nam, S.
Abstract	A dualband quasi-isotropic antenna is presented. It is based on the split-ring-resonators (SRRs), which provide a quasi-isotropic radiation pattern with an electrically small size. For the dualband operation, the SRRs are placed orthogonally to reduce the mutual coupling between the elements. A folded dipole structure is applied to the SRR, therefore, the input impedance at each band can be easily tuned. Both simulated and measured results are presented. The results show dualband operation (792 and 1124 MHz), high efficiency (higher than 86 and 85.5%), compact size (ka = 0.47 at 792 MHz), moderate gain deviation (4.42 and 5.76 dB) with simple direct feed.
Starting Page	515
Ending Page	516
Page Count	2
ISSN	00135194
Volume Number	53
e-ISSN	1350911X
Issue Number	Issue 8, Apr (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/53/8
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2017.0603
Journal	Electronics Letters
Publisher Date	2017-03-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Accessory Antenna Feeds Antenna Radiation Pattern Compact Dualband Quasi-isotropic Antenna Design Dipole Antenna Direct Feed Folded Dipole Structure Frequency 1124 MHz Frequency 792 MHz Gain Deviation Input Impedance Multifrequency Antenna Mutual Coupling Reduction Quasi-isotropic Radiation Pattern Single Antenna Split-ring-resonators SRR UHF Antenna UHF Resonator Waveguide And Microwave Transmission Line Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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