SATELLITE BROADCASTING ANTENNA HAVING A ANNULAR RING AND SHORTED CIRCULAR PATCH LOADED MONOPOLE ANTENNA

摘要

The present invention relates to a vehicle satellite broadcasting antenna consisting of a monopole antenna with a one annular ring antenna and the circular patch loaded so as to ensure the price competitiveness and to miniaturize the size of the satellite broadcasting antennas and simplifies the structure.; To this end, the present invention is a structure of annular shape, which is installed at a predetermined height of the substrate by a feed probe having a phase difference of 90˚ the ring antenna and the monopole antenna is installed to pass through the center of the antenna ring is formed integrally with, the top of the monopole antenna is provided with a load (load) of the circular patch type having a predetermined diameter in order to reduce the antenna length, the sides, the conductor of the cylinder shape of the pair is provided for impedance matching.; Further, the ring antenna and the monopole antenna of the annular shape is selectively operated as a circularly polarized antenna and a linearly polarized antenna based on the reception level of the satellite signal.