Presenting a series of detailed antenna design methodologies and approaches ranging from sub-6 GHz microwave to millimeter-wave spectrum, this book takes a holistic, multi-disciplinary perspective. It covers: - How microwave and millimeter-wave 5G antennas coexist and function independently and collaboratively - Key considerations when designing millimeter-wave 5G antennas within space-constrained mobile devices - Practical considerations such as cost, fabrication yield, heat dissipation when designing 5G mobile antennas - The future direction of how 5G antennas will evolve Written by two of the world's most renowned mmWave antenna experts and inventors, this book provides in-depth academic and practical guidance for those preparing wireless products for 5G mobile devices.