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이국주(Kook Joo Lee),장미선(Mei Shan Zhang),이정언(Jung Aun Lee),한명우(Myeong Woo Han),김문일(Moonil Kim) 대한전기학회 2011 전기학회논문지 Vol.60 No.2
In this paper, bandwidth enhanced design of dielectric resonator antenna fabricated in multi-layer substrate is introduced. The proposed dielectric resonator antenna is operating with fundamental TE101 mode and higher-order TM111 mode. Each resonance frequency is dependent on resonator dimensions. As increasing the height of radiating aperture, the higher-order TM111 mode resonance frequency approach the fundamental TE101 mode resonance frequency and the antenna bandwidth increase by double resonance. Three different aperture height size antennas that operated at 7㎓ are fabricated in FR4 multi-layer substrate. Measured 10 ㏈ matching bandwidth is 8 percent for single resonace antenna and 18 percent for double resonance antenna.