US 12,341,245 B2
Microstrip antenna
Makoto Shigihara, Miyagi-ken (JP); and Shinji Murata, Miyagi-ken (JP)
Assigned to Alps Alpine Co., Ltd., (JP)
Filed by Alps Alpine Co., Ltd., Tokyo (JP)
Filed on Jun. 29, 2023, as Appl. No. 18/344,164.
Application 18/344,164 is a continuation of application No. PCT/JP2021/043546, filed on Nov. 29, 2021.
Claims priority of application No. 2021-025518 (JP), filed on Feb. 19, 2021.
Prior Publication US 2023/0361474 A1, Nov. 9, 2023
Int. Cl. H01Q 13/20 (2006.01); H01Q 9/04 (2006.01)
CPC H01Q 13/206 (2013.01) [H01Q 9/0407 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A microstrip antenna comprising:
a substrate made of a dielectric material;
a ground electrode provided on a first surface of the substrate;
an antenna element including a plurality of radiating elements provided on a second surface of the substrate opposite to the first surface so as to extend parallel to one another and a connecting element provided on the second surface so as to extend in a direction that intersects with the radiating elements and connect the radiating elements;
a feed line including a first end portion connected to a portion of the radiating element that is located at an endmost position among the plurality of radiating elements in plan view, wherein the portion is located on an extension of the connecting element, and a second end portion provided on a side surface of the substrate between the first surface and the second surface to receive power; and
at least one connection line including a section provided on the side surface of the substrate along the feed line, wherein the connection line connects the radiating element located at the endmost position to the ground electrode,
wherein the radiating elements each have a slit provided in a front end portion as viewed from a connecting portion of the radiating element that is connected to the connecting element or a notch formed by cutting an edge of the radiating element located on a side in a direction that intersects with the extension direction of the radiating elements in plan view.