Patent ID: 8907744
Filing Date: 2014-12-09
Classification: H01P,H01Q

Abstract:
1. A Multi-Line Phase Shifter (MLPS) for a vertical beam tilt-controlled antenna, comprising: a housing shaped into an elongated rectangular box; a fixed plate attached on an inner bottom surface of the housing and having transmission lines printed thereon, the transmission lines forming part of a plurality of phase shifting patterns and a plurality of signal division patterns, for dividing an input signal and shifting phases of divided signals; and a mobile plate installed within the housing, movably along a length direction at a position where the mobile plate contacts a surface of the fixed plate, and having transmission lines printed thereon, the transmission lines forming a remaining part of the plurality of phase shifting patterns for phase shifting by forming variable lines through coupling with the part of the plurality of phase shifting patterns; wherein the mobile plate has an upper surface facing respective portions of an inner top surface of the housing, for slidable engagement with the inner top surface of the housing; and wherein in the fixed plate, patterns for connecting one input port to a plurality of output ports to which divided signals of a signal input to the input port are output, are printed at an upper end and a lower end with respect to a length direction of the housing, and the transmission lines are formed between the input port and the plurality of output ports.