The Society of Convergence Knowledge Transactions ISSN:2287-8920(Print) 융복합지식학회논문지

This paper presents an optimization-based design method for a multi-band antenna. From various optimization techniques, evolution strategy is adopted to find the proper initial geometry for creating the resonance at two frequencies(433 MHz and 900 MHz) with a limited physical size. The antenna structure is finalized by adjusting the geometrical parameters to meet the specifications of the UHF-band RFID/IoE services. The design method is validated by fabricating the antenna and testing its frequency responses which turn out compliant with the simulated results.