Linear array antenna

Abstract

Abstract PURPOSE:To increase the characteristic impedance of a line and to obtain a wide band by arranging substrates in parallel through a spacer, and arranging radial conductor parts and strip conductor parts alternately on a substrate surface and thus constituting asymmetric parallel lines. CONSTITUTION:In an insulating cylinder 12, substrates 1 and 2 are arranged in parallel through a spacer 13. On a surface of the substrate 1, radial conductor parts 3A and 3B and a strip conductor part 4 are arranged in the order of 3A, 4, and 3B and on a surface of the substrate 2, radial conductor parts 3C, 3, and 3D are strip conductor parts 4A and 4B are arranged in the order of 3C, 4A, 4, 4B, and 3D as well as the substrate 1. In a hole 5, a coaxial cable 6 for connecting an external feeder to an antenna is made to pass through, and the external conductor of the cable 6 is connected to a hole 7. The internal conductor 6a of the cable 6 is fitted in the hole 10 of a matching circuit substrate 8 and connected to one terminal of a strip line 9, whose other terminal is connected to the conductor 3A through a capacitor 3A. Thus, the character impedance of the line is increased to obtain a band in a wide range.

Inventors

• 👤 Yasuji Suga
• 👤 須賀　保次

Bibliographic Details