US 12,080,934 B2
Multi-layer filter, arrangement, and method for production thereof
Abbas Vosoogh, Gothenburg (SE)
Assigned to GAPWAVES AB, Gothenburg (SE)
Appl. No. 17/762,969
Filed by GAPWAVES AB, Gothenburg (SE)
PCT Filed Sep. 24, 2020, PCT No. PCT/SE2020/050898
§ 371(c)(1), (2) Date Mar. 23, 2022,
PCT Pub. No. WO2021/076026, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 1951183-1 (SE), filed on Oct. 18, 2019.
Prior Publication US 2022/0359967 A1, Nov. 10, 2022
Int. Cl. H01P 1/207 (2006.01); H01P 3/12 (2006.01); H01P 3/123 (2006.01)
CPC H01P 1/207 (2013.01) [H01P 3/121 (2013.01); H01P 3/123 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-layer signal filter comprising at least three physical layers, wherein each layer has through going apertures arranged with an offset to the apertures of at least one adjoining layer, each layer further has a filter channel opening for receiving signals to be filtered, wherein the apertures are arranged along a perimeter outside the filter channel opening, and wherein the apertures are arranged with a central surface portion increasing the edge length of the aperture.