K-Band Varactor Diode-Tuned Elliptical Slot Antenna for Wideband Imaging

Abstract

Small resonant elliptical slot antennas have shown great potential as imaging array elements at microwave frequencies. For high-resolution 3D imaging applications it is desirable to extend the operational frequency bandwidth of these elements. One way to achieve this is by loading the slot with a varactor diode, and electronically tuning its resonant… (More)

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