US 12,230,898 B2
Transparent radio frequency antenna and EMI shield
Robert F. Praino, Westwood, MA (US); David J. Arthur, Canton, MA (US); Emiliano Mezzarobba, Canton, MA (US); and Daniel Skiba, Canton, MA (US)
Assigned to Chasm Advanced Materials, Inc., Canton, MA (US)
Filed by Chasm Advanced Materials, Inc., Canton, MA (US)
Filed on Oct. 25, 2022, as Appl. No. 17/973,081.
Claims priority of provisional application 63/271,265, filed on Oct. 25, 2021.
Prior Publication US 2023/0136728 A1, May 4, 2023
Int. Cl. H01Q 1/36 (2006.01); H01Q 1/52 (2006.01); H01Q 9/04 (2006.01)
CPC H01Q 9/0407 (2013.01) [H01Q 1/368 (2013.01); H01Q 1/526 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A carbon nanoparticle hybrid antenna, comprising:
a substrate;
a conductive layer on a surface of the substrate and comprising either a metal mesh (MM) layer that comprises a metallic grid composed of ultranarrow interconnected spaced linear metal structures or a nanowire layer that comprises nanowires with diameters that are less than their lengths randomly distributed on the surface; and
wherein the conductive layer is overlain by a signal enhancement layer that comprises a dried ink that comprises conductive nanoparticles that comprise one or both of carbon nanotubes (CNTs) and graphene, wherein the areal coverage of conductive nanoparticles of the signal enhancement layer is from 0.75 to 5 mg/m2.