US 12,074,356 B1
Planar transmission line low-pass filters with absorptive matrix and method for forming the same
Faustin Carter, Santa Monica, CA (US); and Jacob Blumoff, Calabasas, CA (US)
Assigned to HRL LABORATORIES, LLC, Malibu, CA (US)
Filed by HRL Laboratories, LLC, Malibu, CA (US)
Filed on May 1, 2023, as Appl. No. 18/141,807.
Application 18/141,807 is a division of application No. 17/323,994, filed on May 18, 2021.
Claims priority of provisional application 63/027,786, filed on May 20, 2020.
Int. Cl. H01P 11/00 (2006.01); H01P 1/203 (2006.01)
CPC H01P 11/007 (2013.01) [H01P 1/203 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A method for forming a planar transmission line low-pass filter, comprising an act of:
using lithographic processes and a castable polymer with microwave-absorbing material as a spin-on dielectric to form the planar transmission line low-pass filter.