A Double-sided Printed Dipole Array with an Electromagnetic Band-Gap Reflector
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Electromagnetic band-gap (EBG) structures have unique properties in controlling the propagation of electromagnetic wave and have been applied to a wide range of electromagnetic devices design. In this paper, a double-sided printed dipole (DSPD) array backed by an EBG reflector is proposed for achieving a low-profile design as well as gain enhancement. Simulation results show that a reduction of more than 55% in antenna height can be obtained by placing the DSPD array over an EBG reflector rather than a perfect electric conductor (PEC) reflector. And the obtained gain of the antenna with an EBG reflector is about 1.9 dB higher than that with a PEC reflector at the operating frequency 2.77 GHz. The EBG reflector can be utilized to reduce a cavity-backed antenna height and enhance the antenna radiation efficiency. The design has a good potential application to antenna arrays with more elements in wireless communication.
KeywordsElectromagnetic band-gap (EBG) Double-sided printed dipole (DSPD) Cavity-backed antenna Antenna array
The authors thank their colleagues for their discussions and suggestions to this research and specially thank Ansoft HFSS China to supply the evaluated software for the simulation.
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