Log periodic antenna

摘要

A log periodic antenna includes first and second transmission lines parallel with each other; and a plurality of broadband radiation elements having first sides electrically connected to the first and second transmission lines, a predetermined angle being defined between the first sides of the broadband radiation elements and the first and second transmission lines, and second sides not electrically connected with the first and second transmission lines, the second sides having radiation surfaces larger than radiation surfaces of the first sides. A plurality of broadband radiation elements electrically connected with the first transmission line and a plurality of broadband radiation elements electrically connected with the second transmission line are positioned to face each other with reference to the first and second transmission lines.

主权项

1. A log periodic antenna comprising:
first and second transmission lines extending parallel with each other in a predetermined direction; and a plurality of broadband radiation elements having first end portions that extend from opposite sides of the first transmission line and a further plurality of broadband radiation elements having first end portions that extend from opposite sides of the second transmission line, a predetermined angle being defined between the first end portions of the broadband radiation elements and the first and second transmission lines, the broadband radiation elements additionally having second end portions respectively extending from each of the first end portions, wherein the broadband radiation elements extending from the first transmission line and the broadband radiation elements extending from the second transmission line are positioned to alternate with each other in the direction of the first and second transmission lines, wherein the second end portions comprise flat panel members that have generally triangular radiation surfaces that are larger than radiation surfaces of the first end portions, and wherein the second end portions are arranged in free space.