| 摘要 |
The present invention provides a quadrifilar helix antenna comprising: an antenna body which has a pole shape; first to fourth filar portions which have the same shape and size, are disposed on an outer circumference surface of the antenna body in a helix form, and are spaced apart by an angular distance of 90 degrees; and a coupler which includes first and second ports, and grounds the first to fourth filar portions, wherein the first to fourth filar portions are formed by successive connection of first to eighth steps formed to have different widths and lengths. The present invention may provide a quadrifilar helix antenna which subdivides steps of filar portions included in a helix antenna and sets the subdivided steps to have different widths, thereby enabling a resonance frequency characteristic to be improved, and enabling a quadrifilar helix antenna having a smaller size to be provided. |
