Patent ID: 6359589
Filing Date: 2002-03-19
Classification: H01Q

Abstract:
A microstrip antenna (100) comprising a ground patch (40) on which at least a feed line (30) is located, and a dielectric (50) laminated on the ground patch (40), further comprising:a first radiation patch (61) short-circuited to one end of the ground patch (40) and laminated on a first upper surface of the dielectric (50), and a second radiation patch (62) short-circuited to the other end of the ground patch (40) and laminated in an array on a second upper surface of the dielectric (50) with a radiation slot (70) arranged between the first and second radiation patches (61) and (62) so that capacitance is implemented between the first and second radiation patches (61 and 62); and wherein the ground patch (40) includes a second ground plate (41) having a triangle shape formed by a feed point of a feed line (30) and both corners of a second lower surface of the dielectric (50) to which the second radiation patch (62) is short-circuited, a connection plate (42) having a width (W2) and extending as long as a height (l5) of the second ground plate (41) from the feed point to the first radiation patch (61) to implement an inductance, and a first ground plate (43) connected to the connection plate (42) and covering a first lower surface of the dielectric (50).