MULTI-BAND INTEGRATED HELICAL ANTENNA

摘要

PURPOSE: A multi-band integrated helical antenna is provided to allow the helical antenna to be used in two or more different mobile communication service bands and obtain a resonant characteristic of a broad band by varying the impedance of an antenna. CONSTITUTION: A multi-band integrated helical antenna includes a dielectric body, a first metal pattern portion(20), and a second metal pattern portion. The dielectric body is formed with two or more dielectric parts having a plurality of dielectric sheets(11) having the constant thickness. The first metal pattern portion(20) is formed with loop patterns(22) and a first connection patterns. The loop patterns(22) are formed between the dielectric sheets and on top sides and bottom sides of the dielectric sheets. The first connection patterns are used for connecting electrically the loop patterns(22) of odd numbers to each other. A second metal pattern portion is formed with a second connection patterns for connecting electrically the loop patterns(22) of even numbers to each other. The length of the first metal pattern portion(20) is different from the length of the second metal pattern portion.