Dual-band antenna apparatus

摘要

One dual-band monopole antenna composed of a microwave substrate, radiation devices and transmission line is disclosed. The radiation device includes the central radiation body and two radiation arms. The central radiation body is used to generate one resonance mode, and the two radiation arms are used to generate another resonance mode. Thus, the dual-band monopole antenna is capable of operating at two different frequencies. In practical applications, radiation arms can be put symmetrically on two opposite sides and close to the central radiation body.