Rectangular microstrip antenna

Abstract

Abstract PURPOSE:To erase a cross polarized wave component by providing symmetrically two pieces of feeding points against the center axis being parallel to a main polarized wave direction of a rectangular radiation conductor element, and executing a feed by an equal phase and an equal amplitude. CONSTITUTION:When a rectangular radiation conductor element 2 constituted of a microstrip is excited by one feeding points 5, since the feeding point 5 is shifted from the center axis being parallel to a (y) axis of the rectangular radiation conductor element 2, a surface current of the (y) axis direction being uniform in the (x) axis direction, and a surface current of the (x) axis direction being uniform in the (y) axis direction flow and become elliptical polarized waves, but when said element is excited so as to become an equal phase and an equal amplitude to one feeding point 5 by a feeding point 11 of a symmetrical position to the feeding point 5 against the center axis being parallel to the (y) axis, each surface current of the (x) direction being uniform in the (y) axis direction is offset each other, and only the surface current of the (y) axis direction being uniform in the (x) axis direction is added. As a result, only a linearly polarized wave of the (y) axis direction is radiated, and a cross polarized wave component is erased completely. In this regard, when the same feeding point is provided in the (x) axis direction, as well, a circularly polarized wave antenna can be constituted.

Inventors

• 👤 Yukihiro Yoshikawa
• 👤 幸広 吉川

Bibliographic Details