US 12,294,151 B2
Inline slotted waveguide antenna
Julius Petersson, Gothenburg (SE); Abolfazl Haddadi, Gothenburg (SE); and Abbas Vosoogh, Gothenburg (SE)
Assigned to Gapwaves AB, Gothenburg (SE)
Appl. No. 18/002,887
Filed by Gapwaves AB, Gothenburg (SE)
PCT Filed Jun. 11, 2021, PCT No. PCT/EP2021/065803
§ 371(c)(1), (2) Date Dec. 22, 2022,
PCT Pub. No. WO2021/259674, PCT Pub. Date Dec. 30, 2021.
Claims priority of application No. 2030209 (SE), filed on Jun. 23, 2020.
Prior Publication US 2023/0253717 A1, Aug. 10, 2023
Int. Cl. H01Q 17/00 (2006.01); H01Q 1/52 (2006.01); H01Q 13/10 (2006.01); H01Q 21/06 (2006.01)
CPC H01Q 17/001 (2013.01) [H01Q 1/523 (2013.01); H01Q 13/10 (2013.01); H01Q 21/06 (2013.01)] 28 Claims
OG exemplary drawing
 
1. An antenna arrangement having a stacked layered structure, the antenna arrangement comprising:
a radiation layer having a surface, the surface delimited by a surface boundary, wherein a first and a second slot extending along a first slot axis and second slot axis, respectively, are arranged on the surface, and
a distribution layer facing the radiation layer, wherein the distribution layer is arranged to distribute a radio frequency signal to the first and second slots, the distribution layer comprising a distribution layer feed and a ridge arranged to form a first ridge waveguide intermediate the distribution layer and the radiation layer,
the ridge comprises a first section connected to a second section via a curved section, the first section extending along a first ridge axis and the second section extending along a second ridge axis different from the first ridge axis, wherein the first slot is arranged facing the first section with the first slot arranged offset from the first ridge axis in a direction towards the second ridge axis, and wherein the second slot is arranged facing the second section with the second slot arranged offset from the second ridge axis in a direction towards the first ridge axis,
wherein a distance from a side wall to the ridge in one of the ridge waveguides, measured in a cross section of the waveguide, varies less than 30 percent along the first ridge waveguide.