Patent ID: 8143970
Filing Date: 2012-03-27
Classification: H01P

Abstract:
1. A variable phase shifter comprising: a circular housing having a center; a circular fixed board fixedly provided within the housing, receiving an input signal through a first transfer stripline provided on one surface thereof, which is a micro stripline, and having at least one arc-shaped output micro stripline radially outside the first transfer stripline; a rotating board being rotatable about the center within the housing, while maintaining contact with the one surface of the circular fixed board, and having a second transfer stripline on a surface thereof, where the rotating board comes in contact with the one surface of the circular fixed board; and wherein coupling between the first and second transfer striplines and the at least one arc-shaped output micro stripline define at least one variable signal path, the at least one variable signal path varying with the rotation of the rotating board, the second transfer stripline being arc-shaped to maintain signal transfer with the first transfer stripline while the rotating board is being rotated, and at least one end of the second transfer stripline maintains signal transfer with the at least one arc-shaped output micro stripline.