When you develop a wireless product you need to have an antenna to communicate and you need to use various materials in your product. Dielectric material selection has an impact on your antenna. It can either de-tune the resonance frequency too much to compensate or it can introduce losses that lower the efficiency and gain of your antennas. In many cases, the material properties are known accurately enough to design antennas. However, that is not always the case. Sometimes the electrical properties are provided for different frequency ranges or not at all. To ensure successful antenna implementation, high accuracy electric characterization is vital.