A system and method utilizes an array of unit coils for wireless charging and/or near field communication. The array of unit coils can be configured to provide magnetic fields of various shapes to accommodate consuming devices and/or to accommodate types of devices. The array of unit coils can be any type of coils (e.g., eccentric coils that provide a concentrated current field and a strong magnetic field). The array of unit coils can be powered by one or more power sources.