SHORTED MICROSTRIP ANTENNA

摘要

A low and broadband shorted microstrip antenna is disclosed which is mainly applicable to a mobile body in a mobile communication system. A first grounding conductive sheet which faces a radiating conductive sheet is provided at both ends thereof with a second and a third grounding conductive sheets which are perpendicular to the first grounding conductive sheet, whereby a beam tilt characteristic of the antenna is improved. A passive element and a conductive stub which is provided on the grounding conductive sheet, which faces the radiating condutive element, serve to improve an impedance matching characteristic.