US 12,249,441 B2
Transmission line
Ryo Sato, Ibaraki (JP)
Assigned to JUNKOSHA INC., Ibaraki (JP)
Appl. No. 18/277,478
Filed by JUNKOSHA INC., Ibaraki (JP)
PCT Filed Feb. 22, 2022, PCT No. PCT/JP2022/007311
§ 371(c)(1), (2) Date Aug. 16, 2023,
PCT Pub. No. WO2022/181623, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 2021-029194 (JP), filed on Feb. 25, 2021.
Prior Publication US 2024/0153670 A1, May 9, 2024
Int. Cl. H01B 7/02 (2006.01); H01B 3/00 (2006.01); H01B 3/44 (2006.01)
CPC H01B 7/0216 (2013.01) [H01B 3/006 (2013.01); H01B 3/443 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A transmission line comprising a conductor and a dielectric layer, wherein
the dielectric layer includes a plurality of bubbles and a plurality of acicular nucleating agents, and
when, based on observed lengths of the plurality of acicular nucleating agents observed in a cross section of the dielectric layer, the acicular nucleating agents having lengths longer than a median value of the observed lengths are classified into a long nucleating agent group and the acicular nucleating agents having lengths shorter than the median value of the observed lengths are classified into a short nucleating agent group, an average length of the acicular nucleating agents in the long nucleating agent group is 3.5 times or less an average length of the acicular nucleating agents in the short nucleating agent group.