MULTI-FREQUENCY HELIX ANTENNA

摘要

PURPOSE: A multi-frequency helix antenna is provided to increase bandwidth and obtain the function of multi-frequency with a simple and low cost helical coil structure, while allowing for ease of production. CONSTITUTION: A helix antenna(10) has a top end with a radially extending section(12) bent inwardly along the central axis of the helical column of the helix antenna. The length of the radially extending section is about half the length of the diameter preset for the helix antenna, a predetermined length(16) from an end(14) of the radially extending section is bent orthogonally to extend inwardly along the central axis of the helical column of the helix antenna. The antenna is endued with an alternative waving frequency value and the value of the capacity and inductance of the antenna match with each other to allow the antenna to have an equivalent resistance to thereby form a complete harmonic oscillation.