Abstract
ABSTRACT In this paper, a design method for a compact CPW-fed slot antenna using SRRs is studied. The structure of the proposed slot antenna is a rectangular slot antenna loaded with SRR conductors inside the slot to reduce the antenna size. Optimal design parameters are obtained by analyzing the effects of the gap between the SRR conductors and slot, and the width of the SRR conductors on the input VSWR characteristic. The optimized compact slot antenna operating at 2.45 GHz band is fabricated on an FR4 substrate with a dimension of 36 mm by 30 mm. The length of the proposed compact slot antenna is reduced to 14.3% compared to that of a conventional rectangular slot antenna. Experiment results show that the antenna has a desired impedance characteristic with a frequency band of 2.4—2.49 GHz for a VSWR < 2, and measured gain of 2.3 dBi at 2.45 GHz. 키워드 : 슬롯 안테나, 소형 안테나, 분할 링 공진기(SRR), CPW급전, 용량성 Key word : slot antenna, compact antenna, split-ring resonator(SRR), CPW-fed, capacitiveJournal of the Korea Institute of Information andCommunication Engineering
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