Manufacture of slot array antenna

Abstract

Abstract PURPOSE:To enlarge an antenna gain, and at the same time, to improve the radiation efficiency of an antenna by making the antenna into such constitution that a feed waveguide is arranged on the opposite side of the radiant surface of the radiant waveguide of a circularly polarized slot waveguide antenna. CONSTITUTION:This antenna is constituted of conductor plates 1, 11 and a metal block 3. The rectangular parallelopiped-shaped grooves 4, 5 having equal lengths, is formed on one surface of the metal block 3, and by bringing the conductor plate 1 into contact closely with the surface 9 of the metal block 3, the waveguides 4, 5, the H surface of which is the surface of the conductor plate 1, are constituted. On a part of the conductor plate 1 to be the H surface of the waveguides 4, 5, n-pieces of slots 2-1-2-n are cut. On another surface 10 of the metal block 3, T-shaped groove is formed by the groove 7, perpendicular to the direction of the tube axes of the waveguides 4, 5, and the groove 6, intersecting it orthogonally at the middle point of the groove 7, and by bringing the conductor plate 11 into contact closely with the surface 10 of the metal block 3, the waveguide, the E surface of which is the surface of the conductor 11, is constituted. At this time, the waveguides 4, 5, 6, 7 come to be the waveguides with the sectional shape of the equal size.

Inventors

• 👤 Hiroyuki Mizukami
• 👤 Akio Yamamoto
• 👤 Takao Shinkawa
• 👤 Masatoshi Oga

Bibliographic Details