Patent ID: 9214740
Filing Date: 2015-12-15
Classification: H01Q

Abstract:
1. A radial line slot array antenna comprising: a slotted conductor plate in which a plurality of slots are formed and arranged in a spiral, the spiral comprising a first portion along which a first plurality of slots of the plurality of slots are arranged and a second portion along which a second plurality of slots of the plurality of slots, wherein the first plurality of slots in the first portion are arranged with a first arrangement distance between the first plurality of slots in a radial direction, the first arrangement distance corresponding to a first spacing between a line of the spiral at the first portion, wherein the second plurality of slots in the second portion are arranged with a second arrangement distance between the second plurality of slots in a radial direction, the second arrangement distance corresponding to a second spacing between the line of the spiral at the second portion, the first arrangement distance and the second arrangement distance being different from each other, wherein the first arrangement distance is selected to maximize the antenna gain at a first frequency of a used frequency band, and wherein the second arrangement distance is selected to maximize the antenna gain at a second frequency of the used frequency band that is different from the first frequency.