%0 Journal Article %T Advancements in FR4 dielectric analysis: Free space approach and measurement validation %A Ali, Syed Zeeshan %A Ahsan, Kamran %A Khairi, Danish ul %A Alhalabi, Wadee %A Anwar, Muhammad Shahid %J PLoS ONE %V 19 %N 9 %D 2024-09-12 %I Public Library of Science %~ DeepDyve