Antenna system

Abstract

Abstract PURPOSE:To decrease number of phase shifters or antennas of a phased array antenna system by using a switching means so as to select which of both ends of an antenna feeder are used as an exciting end thereby reversing the slope direction of the antenna main beam of the side looking array antenna. CONSTITUTION:A conductor layer 4 provided with plural slots 3 being antenna elements is coated on the surface of a dielectric base 2 and the main beam direction of the side looking type array antenna 1 constituted by providing a feeder 5 feeding power to each slot 3 via a dielectric base 2 at the rear face of the dielectric base 2 depends an interval (l) of the slots 3 being the antenna elements constituting the array along the feeder. Then the slope direction of the antenna main beam is reversed by selecting the exciting end of the feeder 5 by a switch 6. Thus, the antenna main beam is directed in two different directions by having only to switch the signal input terminals by the switch 6 without the movement of the antenna itself in one array antenna 1 and phase scanning by a phase shifter.

Inventors

• 👤 Hiroshi Mizuno
• 👤 広 水野
• 👤 Yoshihisa Shibata
• 👤 柴田　義久

Bibliographic Details