Open-Ended Waveguide Antenna Using a SingleSplit-Ring Resonator

ETRI Journal

关键词: aperture miniaturization;    antenna;    waveguide;    Split-ring resonator;   

Others  :  1186147
DOI  :  10.4218/etrij.11.0210.0193

【 摘 要 】

This letter proposes an open-ended waveguide antenna with a single split-ring resonator. In contrast to the waveguide antennas incorporating multiple rings reported in a previous study, which exhibited narrow bandwidth, the proposed antenna uses only one ring to achieve broader bandwidth while keeping the aperture small. A single ring has a relatively low quality factor compared to multiple rings. The simulated and measured fractional bandwidth was 4.13% and 4.03%, respectively, which is much broader than the fractional bandwidth of about 1% demonstrated in a previous study. This simple technique can be used in many applications that require small apertures including near-field probes and array elements.

   

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