Patent ID: 7259642

Claim:
An antenna control unit including plural antenna terminals to which antenna elements are connected, a feeding terminal to which a high-frequency power is applied, and phase shifters which are connected to the respective antenna terminals by feeding lines that branch off from said feeding terminal and electrically change a phase of a high-frequency signal that passes through the respective antenna terminals and the feeding terminal, said phase shifters being placed at some positions on the feeding lines, wherein: each of said phase shifters includes a hybrid coupler on a paraelectric transmission line layer that employs a paraelectric material as a base material, and a stub on a ferroelectric transmission line layer that employs a ferroelectric material as a base material; the paraelectric transmission line layer and the ferroelectric transmission line layer are laminated through a ground conductor, and said hybrid coupler and said stub are connected via a through hole that passes through the ground conductor; and a distance between conductors that form a transmission line on the ferroelectric transmission line layer is larger than a distance between conductors that form a transmission line on the paraelectric transmission line layer.