TY - JOUR T1 - Measurements and analysis of a helical antenna printed on a layered dielectric hemisphere JO - IEEE Transactions on Antennas and Propagation PY - 2011/08/18 AU - Latef TA AU - Khamas SK ED - DO - DOI: 10.1109/TAP.2011.2165491 VL - 59 IS - 12 SP - 4831 EP - 4835 Y2 - 2025/11/05 ER -