ARRAY ANTENNA USING MAGNETIC SUBSTANCE FOR ENHANCED ISOLATION

摘要

The present invention relates to an array antenna using a magnetic substance to improve an isolation property. According to the present invention, the array antenna includes: a dielectric substrate on which a ground pattern having multiple grooves at predetermined intervals is printed on the lower surface; a first patch and second patch which are formed on the upper surface of the dielectric substrate and formed at a point of being symmetric based on a center point of the dielectric substrate; a magnetic body inserted into the multiple grooves by being formed in the same shape as that of the multiple grooves; and power feed ports formed on the lower surface of the dielectric substrate and formed at points which are separated by a predetermined distance from the center point of the first patch and second patch, respectively, wherein the power feed port supports electric power to the first patch and second patch. According to the embodiment of the present invention, the array antenna can largely reduce the strength of mutual coupling in comparison with an existing array antenna and accordingly, can improve the isolation property of the antenna. Moreover, the array antenna can reduce the volume of the dielectric substrate in comparison with the existing array antenna by using the magnetic body and therefore, is advantageous for miniaturization of the antenna.