BROADBAND AND DUAL-BAND OMNI-DIRECTIONAL ANTENNA WITH HIGH PERFORMANCE

摘要

The present invention discloses a broadband and dual-band omni-directional antenna with high performance. The antenna characterized in that it includes a printed circuit board (PCB), a metallic cylinder resonator and a microstrip omni-directional resonator, wherein the microstrip omni-directional resonator is placed within the metallic cylinder resonator; two half-wave resonators placed in parallel are set in the microstrip omni-directional resonator, wherein a metallic microstrip ground line connected with the metallic cylinder resonator exists between the two half-wave resonators, and the microstrip omni-directional resonator and the metallic microstrip ground line are in the same plane of the PCB. The present invention has the advantage that the antenna has small vertical beam declination angle, low un-roundness, high gain, high consistency, strong resistance to interference, simple structure, and low cost in operation band.