US 12,283,753 B2
Dual polarized folded dipole element and antenna
Sadayuki Makiyama, Tokyo (JP); and Hirotaka Ogura, Tokyo (JP)
Assigned to DKK Co., Ltd., (JP)
Filed by DKK Co., Ltd., Tokyo (JP)
Filed on Jan. 12, 2023, as Appl. No. 18/153,444.
Claims priority of application No. 2022-007806 (JP), filed on Jan. 21, 2022.
Prior Publication US 2023/0238714 A1, Jul. 27, 2023
Int. Cl. H01Q 9/26 (2006.01); H01Q 5/48 (2015.01); H01Q 21/24 (2006.01)
CPC H01Q 21/24 (2013.01) [H01Q 5/48 (2015.01); H01Q 9/26 (2013.01)] 9 Claims
OG exemplary drawing
 
8. A dual polarized folded dipole antenna comprising:
a reflection portion;
at least one low band radiating element attached to the reflection portion such that each radiating element extends in a horizontal direction and a vertical direction; and
at least one dual polarized folded dipole element comprising:
four center portions arranged adjacent to each other; and
an element portion including two parallel wire portions extending in parallel to each other from different adjacent two of the center portions and a short circuit portion that short-circuits each of the two parallel wire portions at distal ends;
wherein two adjacent center portions are physically connected to each other by the element portion, the element portion extends in substantially the same plane in four directions from the center portions with an angle of 90° therebetween, wherein a width of each of the two parallel wire portions at the distal end is smaller than a width of each of the two parallel wire portions at the center portions, and the width of each of the two parallel wire portions in the vicinity of the short-circuit is narrower in accordance with approaching the short-circuit; and
wherein the at least one dual polarized folded dipole element is arranged adjacent to the at least one low band radiating element at a predetermined element interval and attached to the reflection portion such that the two parallel wire portions of each of the dual polarized folded dipole elements extends in a ±45° direction with respect to the horizontal direction and the vertical direction.