Properties of cavity-backed slot-ring antennas at 95 GHz

Shalva Nolen; Todd E. Harvey; Carl D. Reintsema; Erich N. Grossman

doi:10.1117/12.438144

21 August 2001 Properties of cavity-backed slot-ring antennas at 95 GHz

Shalva Nolen, Todd E. Harvey, Carl D. Reintsema, Erich N. Grossman

Proceedings Volume 4373, Passive Millimeter-Wave Imaging Technology V; (2001) https://doi.org/10.1117/12.438144
Event: Aerospace/Defense Sensing, Simulation, and Controls, 2001, Orlando, FL, United States

Abstract

Slot-ring antennas with plane backshorts designed for operation at 95 GHZ have been fabricated and their properties measured. Using optical lithography, we fabricated the slot-ring antennas, along with integrated niobium thin-film bolometers, on dielectrically thin silicon substrates. We have performed a theoretical analysis of the slot-ring antennas with planar backshorts and compared the theoretical results with our measured beam patterns. The measured antenna patterns have highly circular main beams with full -3 dB beam widths of 21. The patterns have low sidelobe levels of about -15 dB in the H-plane and below -25 dB in the E-plane and a directivity of 17 dB. We are investigating a focal-plane array of slot-r9ng antenna- coupled bolometers for use in a concelaed-weapons imaging system.

Citation Download Citation

Shalva Nolen, Todd E. Harvey, Carl D. Reintsema, and Erich N. Grossman "Properties of cavity-backed slot-ring antennas at 95 GHz", Proc. SPIE 4373, Passive Millimeter-Wave Imaging Technology V, (21 August 2001); https://doi.org/10.1117/12.438144

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