US 12,334,618 B2
Rolled or folded filter comprising a flexible printed circuit board having first elongate signal tracks covered by an electromagnetically absorbing material
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. 17/794,371
Filed by QM Technologies ApS, Ballerup (DK)
PCT Filed Jan. 22, 2021, PCT No. PCT/EP2021/051489
§ 371(c)(1), (2) Date Jul. 21, 2022,
PCT Pub. No. WO2021/148626, PCT Pub. Date Jul. 29, 2021.
Claims priority of application No. 20153633 (EP), filed on Jan. 24, 2020.
Prior Publication US 2023/0057594 A1, Feb. 23, 2023
Int. Cl. H01P 1/203 (2006.01); H01P 11/00 (2006.01); H05K 1/02 (2006.01)
CPC H01P 1/20345 (2013.01) [H01P 1/20381 (2013.01); H01P 11/007 (2013.01); H05K 1/028 (2013.01); H05K 2201/051 (2013.01); H05K 2201/055 (2013.01); H05K 2201/056 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A filter comprising:
a flexible printed circuit board comprising one or more first elongate signal tracks, each of the one or more first elongate signal tracks formed by an electrically conducting path on a first surface of the printed circuit board, and
a first electromagnetically absorbing material covering the one or more first elongate signal track(s),
wherein the printed circuit board is:
folded to form at least two substantially parallel printed circuit board portions and/or
folded over itself around an axis and with increasing diameter to form a roll.