TY - JOUR T1 - Compact low frequency varactor loaded tunable SRR antenna JO - IEEE Transactions on Antennas and Propagation PY - 2013/01/01 AU - Zhu S AU - Holtby DG AU - Ford KL AU - Tennant A AU - Langley RJ ED - DO - DOI: 10.1109/TAP.2013.2239952 VL - 61 IS - 4 SP - 2301 EP - 2304 Y2 - 2024/12/22 ER -