Bartels, FrederikeFrederikeBartelsLanger, DominikDominikLangerKölpin, AlexanderAlexanderKölpin2025-12-152025-12-152025-0955th European Microwave Conference, EuMC 2025https://hdl.handle.net/11420/60251This paper presents a design approach that facilitates the integration of Bulls Eye antennas into conventional printed circuit board design, which reduces the manufacturing cost of planar high-gain antennas. The antenna is composed of a transversal substrate integrated waveguide feed slot and a 3D-printed Bulls Eye antenna with elliptical corrugations. The depth of the grooves is modulated over the aperture of the antenna. The antenna has a gain of 21.9 dBi in simulation and 18.12 dBi in measurement.enleaky wave antennaBulls Eye antennaThree-dimensional printingTechnology::621: Applied Physics::621.3: Electrical Engineering, Electronic EngineeringConference Paper10.23919/eumc65286.2025.11235159Conference Paper