MULTI-T SHAPED BROADBAND MONOPOLE ANTENNA WITH COMPACT SIZE FOR MOBILE COMMUNICATION TERMINAL

摘要

A Multi-T shaped broadband monopole antenna is provided to relieve restriction about an installation by forming an antenna on a flexible substrate by a printing method. A Multi-T shaped broadband monopole antenna(10) comprises a substrate(11), a feeder(13), a first radiation part(21), a second radiation part(22), a third radiation part(23), and a fourth radiation part(24). The substrate is made of dielectric material. The feeder is extended into the other end direction according to a center line from one end of a top surface of the substrate. The first through the fourth radiation parts are formed from one end of the feeder to the other end direction. Each radiation part has horizontal parts(21a ~ 24a) and vertical parts(21b ~ 24b). The horizontal parts are extended from both sides of the feeder. Length of the horizontal part and the vertical part of the second radiation part is longer than length of the horizontal part and the vertical part of the first radiation part. Length of the horizontal part and the vertical part of the third radiation part is longer than length of the horizontal part and the vertical part of the second radiation part. Length of the horizontal part and the vertical part of the fourth radiation part is longer than length of the horizontal part and the vertical part of the third radiation part.