Antenna design for smartphones using modal/Eigenmode analysis

Practical Antenna Design for handheld devices is demonstrated through the utilization of the modal/Eigenmode theory of antennas. Here, a review of the underlying design fundamentals is outlined. Next, a design example featuring the antenna design of a modern smartphone is presented. The design cycle is simplified through finding an antenna with appropriate complex resonance frequency to cover a required band. Locating the appropriate feed position is then a matter of extracting the corresponding impedance map for this antenna.