An ultra-small cavity resonator loaded with LHM and RHM layers |
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| Authors: | F-Y Meng Q Wu J Wu L-W Li |
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| Institution: | (1) Institute of Technology, School of Electronics and Information Technology, Harbin, Heilongjiang, 150001, P.R. China;(2) National Key Laboratory of Electromagnetic Environment, Beijing, 102206, P.R. China;(3) Department of Electrical & Computer Engineering, National University of Singapore, Kent Ridge, Singapore, 119260, Singapore |
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| Abstract: | In this paper, an ultra-small cavity resonator (USCR) loaded with left-handed metamaterial (LHM) and right-handed material
(RHM) layers is designed using a novel miniaturization approach. The resonant behavior is successfully observed, and the dimensions
of the USCR are only 4.58 mm × 5.08 mm × 2.29 mm at the dominant resonance frequency of 10.3 GHz. Through the field distribution
calculation, we confirmed that the miniaturization of the USCR arises from the left-handed property of the LHM. For a practical
application, a miniaturized filter with overall length of 10.19 mm consisting of two USCRs is designed to confirm the frequency-selective
characteristics. Results show that the filter has some narrow pass bands, which correspond to the resonant modes of the electromagnetic
resonance in the USCR, and the insertion loss at the dominant resonance frequency of the USCR is as low as 0.65 dB. Moreover,
the filtering characteristics of the filter can be controlled by changing its feeding loop positions in the USCR.
PACS 78.70.Gq; 81.05.Zx; 84.40.Ba |
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