PHASE SHIFTER, ANTENNA AND RADIO APPARATUS

摘要

A phase shifter, which can suppress the loss of transmission/reception signals, comprises: a linear conductor (211); a conductor (212) that curves in the form of a segment of a circle the radius of which is Ro; and a conductor (214) that has a curving portion (214a) curving in the form of a segment of a circle the radius of which is Ri and that also has an extending portion (214b) linearly extending from an end of the curving portion (214a). The conductor (214) rotates about a rotation axis (220), so that the position of a part (α) where the curving portion (214a) overlaps the conductor (211) moves along the curving portion (214a) and the position of a part (&bgr;) where the extending portion (214b) overlaps the conductor (212) moves along the conductor (212), whereby the phase (phase shifting amount) can vary.