Effective permittivity determination procedure for 3D-printed dielectric lenses

This work extends the usual design process of dielectric lenses by introducing a novel procedure for determining the effective permittivity of 3D-printed dielectric lenses. A determination lens with a significant side lobe characteristic is designed to determine the effective permittivity while accounting for the specific influences of the 3D-printing process. By using the obtained permittivity value, the lens design can be optimized to achieve a desired performance. A gain accuracy of 0.15 dBi and an SLL accuracy of less than 2.2 dBi is achieved. This procedure integrates seamlessly into the dielectric lens development process, enhancing its accuracy and reliability.

Content

Subjects

3D-printing

dielectric lens

complex permittivity measurement

material characterization

Polylactic acid (PLA)

DDC Class

621.3: Electrical Engineering, Electronic Engineering

Funding References

Funding(s)

Teilvorhaben: Radar-Systementwurf samt Antennen-Design und Entwurf von Stress-Detektions-Algorithmen