Bandwidth enhancement of an array antenna using slotted artificial magnetic conductors
An artificial magnetic conductor (AMC)-integrated array antenna operating at 9.41 GHz is proposed in this work. The AMC plane consists of an array of 9 × 12 rectangular elements slotted using four circular slots. The rectangular circular-slotted AMC unit cell acts as a metamaterial with high permeability of 10.05 and non-unity permittivity of 1.52, respectively. The integration of the AMC plane into a reference array antenna operating at 9.41 GHz increases the impedance bandwidth by 76%, from 1.12 to 1.98 GHz. Besides that, the efficiency is also enhanced from 95.91 to 96.31%. Both reference and proposed antenna show a satisfactory agreement in terms of simulated and measured reflection coefficients and radiation patterns.
KeywordsArray Antenna Patch Antenna Perfect Electric Conductor Impedance Bandwidth Artificial Magnetic Conductor
The authors acknowledge the members of the Advanced Communication Engineering (ACE) for their valuable input and discussions. This work was supported by the FRGS Grant 9003-0522.
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