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Monopole Antenna With Inkjet-Printed EBG Array on Paper Substrate for Wearable Applications

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6 Author(s)
Kim, Sangkil ; Georgia Inst. of Technol., Atlanta, GA, USA ; Yu-Jiun Ren ; Hoseon Lee ; Rida, A.
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In this letter, a novel electromagnetic band-gap structure (EBG) with single-ring resonators is inkjet-printed on the commercially available photo paper using conductive nano-silver ink. The printed EBG array is placed above a copper sheet, forming an artificial magnetic conductor (AMC) reflector at the designed frequency range (2.4 ~ 2.5 GHz). A microstrip monopole antenna is backed with the designed AMC reflector and is tested in free space and in contact with a human phantom. The antenna gain of a conventional microstrip monopole on human phantom is as low as -9 dBi. The gain of the proposed AMC backed monopole, measured on a human phantom is 0.95 dBi. The measurements demonstrate superior performance of the proposed monopole with EBG array compared to a conventional microstrip monopole antenna when they are considered for wearable applications.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )