US 12,347,943 B2
Multiband antenna
Kenta Tsuchiya, Tokyo (JP); and Hiroshi Toyao, Tokyo (JP)
Assigned to JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, Tokyo (JP)
Filed by JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED, Tokyo (JP)
Filed on Apr. 13, 2022, as Appl. No. 17/719,505.
Claims priority of application No. 2021-084571 (JP), filed on May 19, 2021.
Prior Publication US 2022/0376400 A1, Nov. 24, 2022
Int. Cl. H01Q 5/364 (2015.01); H01Q 1/36 (2006.01); H01Q 13/10 (2006.01)
CPC H01Q 5/364 (2015.01) [H01Q 1/36 (2013.01); H01Q 13/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A multiband antenna which is connected to a host conductor when used, a direction along which a longest side of the multiband antenna extends corresponding to a first direction, and the multiband antenna comprising:
a conductor main portion;
a ground terminal;
a feed point; and
a radiation element,
wherein:
the conductor main portion extends in a horizontal plane which is defined by the first direction and a second direction perpendicular to the first direction;
an opening and a slot are provided in the conductor main portion;
a long side of the slot extends in the first direction;
the conductor main portion has a first short edge, a second short edge, a first long edge, and a second long edge;
the first short edge and the second short edge are positioned at respective opposite ends of the conductor main portion in the first direction;
the first long edge and the second long edge are positioned at respective opposite ends of the conductor main portion in the second direction;
the opening is provided at the first short edge and connects the slot with an outside of the conductor main portion in the first direction;
the ground terminal is connected to the host conductor when the multiband antenna is used;
the ground terminal extends from the second long edge;
the ground terminal is positioned closer to the first short edge than to the second short edge in the first direction;
the feed point is positioned closer to the second short edge than to the first short edge in the first direction;
the radiation element has a first portion and a second portion;
the first portion extends from the conductor main portion so as to be apart from the slot in the second direction;
the first portion has a first length in the second direction;
the second portion extends in the first direction from the first portion;
the second portion has a second length in the first direction;
the second length is greater than the first length; and
the first portion is positioned closer to the first short edge than to the second short edge in the first direction.