Title :
An assessment of cable radiation effects on mobile communications antenna measurements
Author :
Saario, S. ; Thiel, D.V. ; Lu, J.W. ; O´Keefe, S.G.
Author_Institution :
Sch. of Microelectron. Eng., Griffith Univ., Brisbane, Qld., Australia
Abstract :
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.
Keywords :
antenna feeds; antenna radiation patterns; antenna testing; coaxial cables; ferrites; finite difference time-domain analysis; land mobile radio; mobile antennas; mobile radio; monopole antennas; FDTD modelling; antenna assessment; cable radiation effects; coaxial cable; current; directional characteristics; ferrite beads; gain; impedance; mobile communications antenna measurements; monopole antenna; network analyser; outer conductor; portable communications equipment; Coaxial cables; Communication cables; Communication equipment; Communication standards; Conductors; Feeds; Ferrites; Impedance; Mobile communication; Radiation effects;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.630220
