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Progress In Electromagnetics Research Letters
ISSN: 1937-6480
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DUAL-BAND LOW PROFILE DIRECTIONAL ANTENNA WITH HIGH IMPEDANCE SURFACE REFLECTOR

By X. Mu, W. Jiang, S.-X. Gong, and F.-W. Wang

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Abstract:
A compact dual-band high impedance surface (HIS) electromagnetic band-gap (EBG) structure is designed as a reflector for a dual-band coplanar waveguide (CPW)-fed planar monopole antenna. The reflector comprises an array of metal square patches which are etched square ring slots. Details of the HIS structure and dual reflection phase frequency bands characteristics are presented and discussed. The simulated and measured results show that the combination of the HIS reflector and the antenna provides directional properties for both frequency bands. At the same time, compared to the antenna integrated with a metal reflector, the profile of the proposed antenna is reduced by more than 60%; the radiation efficiency is increased by 23% (simulated result); and the front-back ratio is increased by 17 dB and 11 dB at the two operating frequency bands, respectively.

Citation:
X. Mu, W. Jiang, S.-X. Gong, and F.-W. Wang, "Dual-Band Low Profile Directional Antenna with High Impedance Surface Reflector," Progress In Electromagnetics Research Letters, Vol. 25, 67-75, 2011.
doi:10.2528/PIERL11051109

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