Coaxial slot array antenna

Abstract

Abstract PURPOSE:To obtain an electronic wave radiating beam with a strong directivity and to attain miniaturization by locating slots drilled axially on an outer conductor of a coaxial line at a prescribed interval on a prescribed line. CONSTITUTION:A coaxial slot array antenna 10 is constituted by drilling the slots 13, 13... of a desired number on the outer conductor 12 of the coaxial line 11 coaxially at a prescribed interval (l) and winding a coaxial line 11 in the form of solenoid so as to locate the slots 13, 13... on a prescribed line 14 at a prescribed interval (d). Since the slots 13 are formed to shield a wall current of the outer conductor of the coaxial TEM mode, an electromagnetic wave is radiated. Further, when the phase of a radiated field from the adjacent slots 13, 13... is in-phase mutually, the radiated beam is generated in the direction orthogonal to a plane formed by the slot array and when the phase is shifted slightly regularly, the wave is radiated at an angle different from the orthogonal direction.

Inventors

• 👤 Toshimi Aketoshi
• 👤 明利　敏巳

Bibliographic Details