Harnessing millimeter wave (mmWave) spectrum for faster data speeds is one of the biggest breakthroughs of 5G So what is millimeter wave? Millimeter wave has in its title a reference to the small size of its wavelengths, which range from around 10 millimeters to 1 millimeter. It’s an extremely effective swath of spectrum, with large bandwidth, but it’s also very sensitive to external variables — whether it’s walls, trees, or even just rain. Whereas low-band antennas are good for covering areas of up to several miles — whether it’s large patches of city, residential areas, or rural expanses — millimeter wave (or mmWave) makes more sense for small, targeted deployments such as inside a baseball stadium, or for fixed wireless in a specific area. There are concerns this very high-frequency spectrum could pose adverse health effects for the public radiofrequency (RF) radiation. At a basic level, radiation isn’t as intimidating a term as it might seem. Radiation is the em