Abstract

A novel asymmetric unilateral monopole CPW dual-band antenna is screen-printed on the high dielectric Aluminum Oxide ceramic substrate by the screen-printing technique in this letter. Owing to the high dielectric constant ceramic substrate and asymmetric unilateral structure are used, the size of the antenna can be minimized to only 20×10.8 mm2. The proposed antennas reveal near omni-directional radiation patterns, and the optimum measured bandwidth are 11% (at 2.455 GHz) and 11.6% (at 5.425 GHz), the optimum measured return loss are −21.4 dB (at 2.455 GHz) and −19.1 dB (at 5.425 GHz), respectively.

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