Title :
Near field estimation of patch antennas from the fringing fields
Author :
Ojha, J.R. ; Nyakey, C.K. ; Peters, Marc ; Amirkhizi, R.S.
Author_Institution :
EM Sofware & Syst., Boblingen
Abstract :
Determination of far fields using magnetic line currents has been found to be accurate. However, this approach fails when near fields are determined. The magnetic line currents determined from the Eigen functions were earlier determined along the periphery of a patch antenna. This approach was found to be sufficiently accurate only for the far fields. The accuracy of the near fields using this approach is found to deviate when compared to the full-wave model. This problem is overcome by modelling the fringing fields and incorporating this to analytical approach by which the Eigen functions are determined. Accurate modelling of near fields is a must especially for determining the magnetic interactive currents for patch antenna arrays.
Keywords :
eigenvalues and eigenfunctions; microstrip antenna arrays; Eigen functions; Fringing Fields; far fields; full-wave model; magnetic line currents; near field estimation; patch antenna arrays; Antenna arrays; Dielectric constant; Dielectric losses; Dielectric substrates; Frequency domain analysis; Green´s function methods; Impedance; Magnetic analysis; Magnetic domains; Patch antennas;
Conference_Titel :
Microwaves, Radar and Wireless Communications, 2008. MIKON 2008. 17th International Conference on
Conference_Location :
Wroclaw
Print_ISBN :
978-83-906662-8-0