| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multi-frequency circularly polarized antenna that is small and easy to manufacture, and also thin and lightweight. <P>SOLUTION: A multi-frequency circularly polarized antenna 100 is comprised of a substrate and multi-frequency antennas 900 and 901. The multi-frequency antennas 900 and 901 include: antenna elements 120, 220, 320 and 420; shunt inductor conductors 170, 270, 370 and 470; series capacitor conductors 160(a, b), 260(a, b), 360(a, b) and 460(a, b); series inductor conductors 140, 240, 340 and 440; a center point 199; and input/output terminals 110, 210, 310 and 410. The multi-frequency antenna 900 is disposed to intersect at the center point 199 so as to have an angle of less than 90 degrees with respect to the multi-frequency antenna 901. <P>COPYRIGHT: (C)2013,JPO&INPIT |
