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Design and Development of Low Profile Substrate Integrated Dielectric Resonator Antenna for Space Applications

School: School of Engineering, Coimbatore

Design and Development of Low Profile Substrate Integrated Dielectric Resonator Antenna for Space Applications

A low cost and high radiation efficiency antenna structure, Substrate integrated waveguide (SIW) is designed for Space Applications at 5.8 GHz. Substrate integrated waveguide (SIW) is a guided-wave structure that has the benefits such as high quality factor (Q), high power handling capacity, low loss and is suitable for microwave and millimeter-wave systems. With the development of SIW technology, several components, including active circuits, passive components, and antennas are designed. Designing low profile antenna with good radiation performance is in great demand, especially in space applications such as satellite, aircraft and radar in some military platforms. Slot antennas, for their attractive characteristics such as low profile, conformability to planar or curved surfaces, easy integration with planar circuits and better isolation from feed network, are very suitable for these applications. Dielectric resonator antennas (DRAs) are interesting especially at mm-wave range for their wide advantages such as high radiation efficiency, small size, low cost, and low losses. Substrate integrated waveguide (SIW) is used as a feeding network to further reduce conductor loss compared to other traditional feeding networks. As compared to planar antennas, using current technologies DRA are more difficult and costly to fabricate. In this work, a simple and low cost substrate integrated waveguide fed dielectric resonator antenna (SIW-DRA) element at 5.8 GHz is analyzed.

Top view of SIW fed CDRA with different slot configuration
(a) Existing Antenna (b) Proposed Antenna

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