DIGITAL MULTIMEDIA BROADCASTING ANTENNA WITH SHORT STUB

摘要

A DMB(Digital Multimedia Broadcasting) antenna with a short stub is provided to prevent loss due to sudden change of impedance by improving efficiency of impedance matching through a meander line structure. A DMB antenna with a short stub(130) includes a circuit board(110), a light emitting device(120), and the short stub(130). The circuit board(110) has a predetermined dielectric constant, and has a ground surface(GND). The light emitting device(120) is placed to face an upper end of the circuit board(110), and composed of a first light emitting device(121) which has a shape of a pyramid cut, and a second light emitting device(122) of which one end is extended from the ground surface(GND) to an upper part of circuit board(110) and the other end thereof is connected with a cut surface of the first light emitting device(121). One end of the short stub(130) is connected at one end of the second light emitting device(122), and the other end thereof is connected to the ground surface(GND) of the circuit board(110).