Example discloses a conductive plane antenna, including, a non-conductive substrate; a conductive plane coupled to the non-conductive substrate; wherein the conductive plane includes an open cavity over the non-conductive substrate; wherein the cavity includes a closed end and an open end; a first feed point coupled to the conductive plane and configured to pass a first polarity of a set of electromagnetic signals; and a second feed point coupled to the conductive plane and configured to pass a second polarity of the set of electromagnetic signals wherein the conductive plane is configured to generate a first antenna gain pattern in response to the first and second polarity signals; wherein the cavity is configured to generate a second antenna gain pattern in response to the first and second polarity signals; and wherein a magnitude of the first antenna gain pattern is greater than a magnitude of the second antenna gain pattern.