US 12,334,617 B2
Multi-channel filter comprising plural elongate signal tracks covered by electromagnetically absorbing material and the signal tracks are separated by elongate shielding tracks
Merlin Von Soosten, Copenhagen S (DK); Ferdinand Kuemmeth, Copenhagen N (DK); Anders Kuhle, Vanlose (DK); Martin Skjodt, Rodovre (DK); Jonatan Kutchinsky, Ballerup (DK); and Peter Ulrik Kann, Farum (DK)
Assigned to QM TECHNOLOGIES APS, Ballerup (DK)
Appl. No. 17/794,342
Filed by QM Technologies ApS, Ballerup (DK)
PCT Filed Jan. 22, 2021, PCT No. PCT/EP2021/051482
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/148621, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 20153638 (EP), filed on Jan. 24, 2020.
Prior Publication US 2023/0046599 A1, Feb. 16, 2023
Int. Cl. H01P 1/203 (2006.01); H01P 11/00 (2006.01); H05K 1/02 (2006.01); H05K 1/11 (2006.01)
CPC H01P 1/203 (2013.01) [H01P 1/20381 (2013.01); H01P 11/007 (2013.01); H05K 1/0219 (2013.01); H05K 1/028 (2013.01); H05K 1/118 (2013.01); H05K 2201/051 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A multi-channel filter comprising:
a printed circuit board comprising:
a plurality of first elongate signal tracks, each first elongate signal track formed by an electrically conducting path on a first surface of the printed circuit board, each first signal track is not galvanically connected to any other first signal track,
one or more first elongate shielding tracks, each first elongate shielding track formed by an electrically conducting or absorbing path on the first surface, where each of the plurality of first elongate signal tracks is separated from a neighboring first elongate signal track by one of the one or more first elongate shielding tracks,
a first electrically conducting or absorbing layer on a second surface of the printed circuit board, the first and second surfaces being opposite surfaces of the printed circuit board, and
a first electromagnetically absorbing material covering the plurality of first elongate signal tracks.