TY - GEN AU - Ben Davis AU - Chriss Grosvenor AU - Robert Johnk AU - David Novotny AU - James Baker-Jarvis AU - Michael Janezic C2 - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD DA - 2007-01-01 LA - en M1 - 112 PB - Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD PY - 2007 TI - Complex permittivity measurements of planar building materials using a UWB free-field antenna measurement system ER -