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|1. (WO2018159973) PHASE SHIFTER AND COMMUNICATION DEVICE COMPRISING SAME|
|Applicants:||EMW CO., LTD.
|Inventors:||SEONG, Won Mo
PARK, Yong Hyun
LEE, Kwang Ho
|Title:||PHASE SHIFTER AND COMMUNICATION DEVICE COMPRISING SAME|
A phase shifter comprises: a fixed line having one end connected to an input terminal through which a radio signal is inputted and the other end connected to one of a plurality of output terminals through which the radio signal is outputted, and having a coupling point formed between the one end and the other end; a plurality of transmission lines spaced apart from each other above the fixed line, and formed in an arc shape such that both ends are respectively connected to different output terminals; and a coupling variable device formed at the coupling point, and varying the phase of the radio signal by coupling-feeding the plurality of transmission lines while rotating within a set angle range. A slot extending in the direction parallel to the extending direction of the transmission line and a plurality of slits extending inward from the exterior direction of the transmission line are formed at each of the plurality of transmission lines. The plurality of transmission lines include a first transmission line arranged adjacently to the fixed line, and a second transmission line arranged adjacently to the exterior direction of the first transmission line. The first transmission line is arranged at at least a part of the first transmission line and includes a protrusion line having a shape of protruding in the direction of the second transmission line.