Abstract
In this paper, a dual-band CPW-fed MIMO antenna is designed and analyzed. Fundamental resonance of the coplanar stepped impedance resonator (CSIR) produces the 1st operating band, while its harmonic resonance and the resonance of the rectangular slot line resonator (RSLR) construct the 2nd band. The port-to-port isolation within the 2nd band is high since it works at the harmonic resonant frequency of the CSIR. The bandwidth of the 2nd band can be easily tuned in a very wide range by adjusting the resonant frequency of the RSLR. Finally, a hexagon 3-port dual-band MIMO antenna is designed and fabricated with isolation higher than 30 dB and 40 dB within the two operating bands, respectively.
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