Patent ID: 9196967
Filing Date: 2015-11-24
Classification: H01Q

Abstract:
1. A beamwidth adjustment device for a feedhorn comprising an opening and a ring encircling the opening, the beamwidth adjustment device comprising: a conductor, for adjusting beamwidth formed by the feedhorn according to a characteristic of a dish of a satellite antenna corresponding to the feedhorn; and a fixing element, for fixing the conductor to the feedhorn via the ring, wherein the satellite antenna is used for receiving signals from the feedhorn; the conductor is composed of a solid round pattern in the center of the conductor, one or more concentric circular patterns with a given width, and a cross pattern formed by two perpendicularly-crossed rectangles, wherein each circular pattern is uniformly cut to a plurality of arcs by a constant spacing, a center of the one or more concentric circular patterns and the cross point of the cross pattern are aligned with the center of the conductor, and four arcs of each circular pattern perpendicularly cross a rectangle of the cross pattern; or the conductor is composed of a cross pattern formed by two perpendicularly-crossed arrows and two spots aligned with a direction pointed by an arrow.