Planar circularly polarized antennas
AssigneeInternational Business Machines Corporation
InventorDuixian Liu
Life of this patent
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Abstract
A planar circularly polarized antenna comprises at least one coplanar waveguide feed line and a plurality of driven loops electrically connected to the feed line, wherein the driven loops and the feed line are substantially coplanar. At least one of the plurality of driven loops may be of a size different from at least another one of the plurality of driven loops and at least one of the plurality of driven loops may have a resonant frequency different from at least another one of the plurality of driven loops.
Claims21
A planar circularly polarized antenna comprising:
- at least one coplanar waveguide feed line;
- and
- a plurality of driven loops electrically connected to the feed line;
- wherein the driven loops and the feed line are substantially coplanar.
A method of forming a planar circularly polarized antenna, comprising the steps of:
- forming a plurality of driven loops on a first surface of the substrate;
- and
- forming at least one coplanar waveguide feed line on the first surface of a substrate;
- wherein the plurality of driven loops are electrically connected to the feed line and wherein the plurality of driven loops and the feed line are substantially coplanar.
Dependencies are inferred from the claim text.