Magnetic antenna structures having spatially varying profiles

摘要

Magnetic antenna techniques and devices are disclosed for operating at an RF or microwave frequency by using a magnetic antenna structure having a spatially varying property that varies spatially from one location to another location in at least a portion of the magnetic antenna structure. Such a spatially varying property can be reflected in various ways, e.g., a spatially varying geometry profile in part of or the entirety of the magnetic antenna structure, a spatially varying antenna material property in a spatially uniform geometry or a spatially varying geometry. The disclosed technology also provides magnetic antenna structures based on splitting the componentry for transmission and reception so that each can be individually optimized.