Satellite broadcasting antenna having a Annular ring and Shorted circular patch loaded monopole antenna

摘要

The present invention can secure a price competitiveness and to miniaturize the size of the satellite broadcast antenna to simplify the structure is one annular ring with a circular patch antenna to the vehicle load is made of a satellite antenna comprising a monopole antenna so that. a ; To this end, the present invention provides a substrate by a feed probe having a phase difference of 90 , and the ring of the annular-shaped antenna which is installed at a predetermined height, the monopole antenna is installed to pass through the center of the antenna ring is an integrally formed structure, a circular patch type having a predetermined diameter, the upper end of the monopole antenna in order to reduce the antenna length Load (load) is provided, on both sides is provided with a pair of cylinder-shaped conductor for impedance matching. ; In addition, the ring antenna and the monopole antenna of the annular shape is selectively operated as a circular polarization antenna and the linear polarization antenna according to a reception level of the satellite signal.