ANTENNA ASSEMBLY, ITS FREQUENCY ADJUSTING METHOD, AND RADIO COMMUNICATION APPARATUS

摘要

In an antenna assembly (4) equipped with a coil (10), a plurality of resonance frequencies and their frequency intervals are adjusted. In the antenna assembly (4) equipped with the coil (10), the coil (10) is provided with a passive conductor (16) covering a part of the coil (10) and the passive conductor (16) is arranged at a position where the primary resonance current or higher order resonance current of the coil (10) concentrates. The passive conductor (16) is brought to the vicinity of the coil (10) and coupled to the coil (10). Resonance characteristics of the coil (10) are coupled with the resonance characteristics of the passive conductor (16), thus obtaining the resonance characteristics of both of them.