Patent ID: 9728846
Date: 2017-08-08
CPC Classifications: H01Q

Claim:
1. A low passive intermodulation (PIM) antenna apparatus, comprising: a radiating element comprising a monopole antenna, the monopole antenna comprised of a plurality of protruding portions, wherein each of the protruding portions are separated from one another by an equal amount, each of the protruding portions configured to extend away from a formed ground plane, and one of the plurality of protruding portions comprising a shunt feed coupled to the formed ground plane; the formed ground plane comprising an axially symmetric shape, the formed ground plane having an electrical path length and a diameter, the electrical path length of the formed ground plane being configured to run in a direction along a diameter of the axially symmetric shape, the electrical path length of the formed ground plane having a length along a surface of the formed ground plane that is greater than the diameter of the formed ground plane; and a connector coupled to the formed ground plane and the radiating element; wherein the formed ground plane comprises one or more elevated portions and one or more depressed portions, a combination of the one or more elevated portions and the one or more depressed portions being configured to provide the electrical path length of the formed ground plane that is greater than the diameter of the formed ground plane.