In this video, we demonstrate collaborative antenna design using the example of a 5G small cell antenna array. The design of any high-tech product typically involves many different departments, often spread across many locations. The additional overhead introduced by separate working environments costs time and delays product rollout. In addition, working in silos makes it very difficult to keep a global overview of the different product candidates and the required physical and virtual tests. We will show how the 3DEXPERIENCE platform facilitates collaboration and helps to improve efficiency in product lifecycle management, requirements engineering, and analysis of simulation results.