期刊
MODERN PHYSICS LETTERS B
卷 30, 期 7, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984916500792
关键词
Dual-band; bandpass filter; metamaterial
资金
- National Natural Science Foundation of China [61307125, 61275107, 61527805]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20131101120027]
- Open Research Fund of State Key Laboratory of Space-Ground Integrated Information Technology [2014_CXJJ-TX_03]
- Basic Research Foundation of Beijing Institute of Technology, China [20120542015, 20130542010, 20130542016, 20140542002]
A dual-band bandpass filter at X-band is proposed using composite rnetarnaterial resonator consisting of an outer square closed-ring resonator (SCRR) and two inner electric inductance capacitance (ELC) resonators. Numerical simulation and microwave measurement reveal that the filter exhibits two passbands centered at 8.76 GHz and 1-1.04 G Hz, with 3 dB bandwidths of-130 MHz and 290 MHz, respectively. The complex dispersion relation of the filter is further derived based on the effective medium theory, where two balanced composite right-/left-handed bands are found, i.e. lines exhibiting two left-handed and two right-handed bands alternating. The proposed filter may find useful in dual-banal or multi-band wireless communication Systems.
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