Ultra Wideband Transition From Coaxial Line to Two Parallel Lines Manufactured Using Additive Manufacturing Technology

In this paper, a new way to manufacture an ultra-wideband transition from a two wires line to a coaxial line with low losses using an additive manufacturing technique is proposed. Indeed, the flexibility offered by these rapid prototyping methods allows to print complex shapes easily. The transition uses a slotted coaxial line following a Klopfenstein impedance taper to perform a smooth transition. The simulations and the measurements show good results in the desired frequency band from 2 GHz to 40 GHz. However, for such a structure, a proof of the reproducibility study is conducted as well as a thermal test to show the behavior according to the temperature.