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Standard methods of antenna assessment require their connection via coaxial cable to a network analyser. For portable communications equipment, this situation is quite different from the standard operation because current in the outer conductor of coaxial cable feeds can significantly distort the impedance, gain and directional characteristics. The use of ferrite beads to minimise cable radiation effects is investigated for various configurations using FDTD modelling.
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest (Volume:1 )
Date of Conference: 13-18 July 1997