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A Design of Two Layer Re-entrant Microstrip Directional Coupler Improving Coupling and Isolation  

최문호 (아주대학교 전자공학부)
이진택 (아주대학교 전자공학부)
천동완 (아주대학교 전자공학부)
신철재 (아주대학교 전자공학부)
Publication Information
Abstract
In this paper, we proposed the directional coupler using two layer microstrip substrate which is improved coupling and isolation. Also, we notified a design method. Modified re-entrant mode coupler is the structure added to the aperture on the ground plane in order to improving the coupling value. And, by adding to slits on the floating conductor, this structure has good performance in isolation, VSWR according to S$\sub$11/, and phase difference. As a result, proposed re-entrant mode microstrip directional coupler has about 1.5 dB more higher coupling and 20 dB more higher isolation than conventional coupler. And because this coupler has good performance in phase difference, it can be used multi-section coupler.
Keywords
Re-entrant Mode; Directional Coupler; Aperture;
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Times Cited By KSCI : 1  (Citation Analysis)
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