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IEEE Transactions on Instrumentation and Measurement | Vol.68, Issue.7 | | Pages 2665-2667
Wideband Substrate-Integrated Cavity-Backed Elliptical Slot for Microwave Synthetic Aperture Imaging
Resonant elliptical slot antennas with waveguide feeds were successfully used to implement the microwave imaging systems in the past. For wideband imaging, these slots required tuning circuit components to be incorporated in the array. The bulkiness of the previous feeds and the additional tuning circuits render realizing wideband large imaging arrays practically prohibitive. In this paper, the feeding and bandwidth constrains of the previous elliptical slot designs are addressed. Specifically, a unidirectional wideband substrate-integrated cavity-backed elliptical slot antenna is introduced for imaging applications in the <inline-formula> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula>-band frequency range (18–26.5 GHz). The proposed slot design and measurement results are presented herein. Its efficacy for imaging applications is demonstrated via synthetic aperture imaging.
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Wideband Substrate-Integrated Cavity-Backed Elliptical Slot for Microwave Synthetic Aperture Imaging
Resonant elliptical slot antennas with waveguide feeds were successfully used to implement the microwave imaging systems in the past. For wideband imaging, these slots required tuning circuit components to be incorporated in the array. The bulkiness of the previous feeds and the additional tuning circuits render realizing wideband large imaging arrays practically prohibitive. In this paper, the feeding and bandwidth constrains of the previous elliptical slot designs are addressed. Specifically, a unidirectional wideband substrate-integrated cavity-backed elliptical slot antenna is introduced for imaging applications in the <inline-formula> <tex-math notation="LaTeX">$K$ </tex-math></inline-formula>-band frequency range (18–26.5 GHz). The proposed slot design and measurement results are presented herein. Its efficacy for imaging applications is demonstrated via synthetic aperture imaging.
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feeding microwave imaging systems large imaging arrays synthetic aperture imaging tuning circuit components wideband unidirectional wideband substrateintegrated cavitybacked elliptical slot antenna ltinlineformulagt lttexmath notationlatexgtk lttexmathgtltinlineformulagtband frequency range bandwidth constrains bulkiness waveguide feeds
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