ANTENNA

摘要

A multi-frequency circularly polarized antenna (100) comprises a base plate and multi-frequency antennas (900, 901). The multi-frequency antennas (900, 901) comprise antenna elements (120, 220, 320, 420), shunt-inductor conductors (170, 270, 370, 470), series-capacitor conductors (160a, 160b, 260a, 260b, 360a, 360b, 460a, 460b), series-inductor conductors (140, 240, 340, 440), a center point (199), and input/output terminals (110, 210, 310, 410). The multi-frequency circularly polarized antenna (100) is constructed by connecting the shunt-inductor conductors (170, 270, 370, 470) of the multi-frequency antennas (900, 901) at the center point (199) in a substantially perpendicular manner.