US 12,431,621 B2
Compact dual band antenna
Zhong Liu, Doylestown, PA (US); Amit B. Kulkarni, Duluth, GA (US); and Justin Jose, Muvattupuzha (IN)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by Honeywell International Inc., Charlotte, NC (US)
Filed on Jan. 26, 2023, as Appl. No. 18/160,065.
Prior Publication US 2024/0258693 A1, Aug. 1, 2024
Int. Cl. H01Q 5/307 (2015.01); H01Q 1/48 (2006.01); H01Q 9/04 (2006.01)
CPC H01Q 5/307 (2015.01) [H01Q 1/48 (2013.01); H01Q 9/0407 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dual band antenna, comprising:
a ground plane formed by a first conductive layer of a Printed Circuit Board (PCB);
a first antenna element formed by the first conductive layer of the PCB, the first antenna element is spaced from and electrically isolated from the ground plane, the first antenna element includes a first member forming a vertical portion of the first antenna element and a second member orthogonal to the vertical portion, the first antenna element is configured to resonate in a first frequency band that is centered at about 5.4 GHz;
a second antenna element formed by the first conductive layer of the PCB, the second antenna element is electrically connected to the ground plane and electromagnetically coupled to the first antenna element, the second antenna element includes:
a third member that extends along a first path that extends from the ground plane to a fourth member, wherein the first path is at least substantially parallel with the first member of the first antenna element wherein the fourth member extends along a second path that is at least substantially parallel with the second member of the first antenna element and substantially orthogonal to the first path of the third member;
a fifth member connected with the fourth member and extending at least substantially parallel with the third member;
wherein the second antenna element extends at least partially around at least part of at least three sides of the second member of the first antenna element, the second antenna element is configured to resonate in a second frequency band that is centered at about 2.4 GHz; and
wherein the first antenna element and the second antenna element fit within a rectangular area of less than about 100 square millimeters on the PCB.