Mentzer, Rasmus BentRasmus BentMentzerBartels, FrederikeFrederikeBartelsWeiß, NicoNicoWeißKölpin, AlexanderAlexanderKölpin2025-12-162025-12-162025-0955th European Microwave Conference, EuMC 2025https://hdl.handle.net/11420/60264This 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.en3D-printingdielectric lenscomplex permittivity measurementmaterial characterizationPolylactic acid (PLA)Technology::621: Applied Physics::621.3: Electrical Engineering, Electronic EngineeringConference Paper10.23919/eumc65286.2025.11234981Conference Paper