3D-printed Ceramic Lens Antennas for Space-based Sensing and Communications

Principal Investigator: Dr. Chisum, Department of Electrical Engineering 

Project Summary:

The proliferation of low-earth-orbit satellite (LEO) communications and sensing using low-cost, size-weight-and-power (SWaP) constrained satellite buses (such as the CubeSat) demand a low-cost, wideband antenna solution capable of operating over relevant bands for earth science tasks including weather prediction (24 GHz) and environmental monitoring. In addition, earth downlink of massive data sets requires wideband communication links. Our recent work on gradient index (GRIN) lens antenna shows that they offer a low-cost and wideband solution for both sensing and communications in frequency ranges from 10-100+ GHz. And with recent advances in 3D printed ceramics including alumina, there is now a means of manufacturing GRIN media for operation in the extreme environments of space. 

The purpose of this research project: In this research task we will characterize a newly acquired ceramic printer for the purposes of realizing GRIN lens antennas for space applications. A baseline printing and sintering process is already available but process optimization is necessary to ensure high-performance (e.g., high efficiency, mechanical strength, and print reliability).

Student’s Role:

The student will perform a variety of prints while varying process parameters, then characterize the resulting material samples using free-space and guided-wave measurements methods including the Nicholson-Ross-Weir method for determining effective permittivity. Once initial material characterization is completed the student will print several candidate lens designs and conduct near-field antenna measurements using a state-of-the-art planar near-field (PNF) antenna range. The radiation pattern of the antennas will be measured from roughly 10-95 GHz. The student will work alongside graduate students in the PIs lab.