TY - CONF T1 - Complex Permittivity Estimation for Construction Materials based on PSO Method JO - 2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting PY - 2019/07/01 AU - Luo J AU - Shao Y AU - Zhang R AU - Liao X AU - Zhang J ED - DO - DOI: 10.1109/apusncursinrsm.2019.8889106 PB - IEEE Y2 - 2024/10/18 ER -