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3D Printed Antennas

Design and Analysis of Fresnel Lens

Traditional lens structures are used in a wide range of applications: from imaging systems for magnifying small objects, to energy systems for harvesting more solar energy without using expensive or large cells. In our group, we are adopting the use of 3D-fabricated lens structures in millimeter wave and terahertz frequency bands. 

Full PLA structure, maximum radius : 69.3 mm, minimum radius : 14.4 mm

Due to its high directivity and beam focusing characteristic, Fresnel lens can be implemented in satellite communication, for instance in Ka-band between 26.5 GHz to 40 GHz) and radar systems. In terms of miniaturizing lens and antenna, adopting ways to fabricate these structures are important as conventional methods such printed circuit boards (PCB) are not suitable for non-planar structures. On the other hand, 3D printing is simpler and offers low-cost and minimal labor time. In this project, we investigate the use of additive manufacturing in fabrication 3D millimeter wave structures such as Fresnel lens.

Simulated and measured radiation pattern, horn antenna only Simulated and measured radiation pattern,horn antenna with the lens

Related Paper:

K. H. Jeong, N. Ghalichechian. "Design, Fabrication and Measurement of a Millimeter Wave Fresnel Lens using Additive Manufacturing," Symposium on Antennas and Propagation (APS), Boston, MA, Jul, 2018.