Publisher : The Korean Institute of Electromagnetic Engineering and Science
DOI : 10.5515/KJKIEES.2015.26.12.1058
Title & Authors
Design of the Near Field Microwave Guide Type of Probe Having Enhanced High Transmission Efficiency and Smaller Beam Spot Area Ko, Ji-Hwan; Cho, Young-Ki;
In this article, we propose a near field microwave scanning probe structure in which two short conducting rods are attached to the center of the ridged(H-type) aperture, thereby reducing significantly the beam spot area while maintaining the high transmission efficiency through the output coupling H-type(ridged) aperture. Here the two short parallel conducting rods seem to play an important role of concentrating the transmitted electromagnetic energy through the H-type aperture and so reducing the beam area for high resolution. For validation of the proposed theory, the near field waveguide probe is fabricated according to the simulated results and its return loss characteristics versus frequencies are measured. The comparison between theory and experiment is seen to be in good agreements.
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