Patent ID: 8841977

Claim:
A phase shifter comprising: a first line configured to deliver a power into a corresponding radiation element, the first line being a conductor; and a second line configured to deliver the power into a corresponding radiation element, the second line being a conductor, wherein a first phase velocity of a first signal propagated through the first line is different from a second phase velocity of a second signal propagated through the second line, a phase shift range of the first signal propagated through the first line is proportional to a phase shift range of the second signal propagated through the second line, a ratio of a first phase shift to a second phase shift is different from a ratio of a distance between a reference point and the first line to a distance between the reference point and the second line, the first phase shift is defined as a phase shift of the first signal propagated through the first line, and the second phase shift is defined as a phase shift of the second signal propagated through the second line.