J. Jiang, "The far field transformation for the antenna model- ing based on spherical electric field measurements," Prog. Electromagn. Res. Lett., vol. 123, pp. 243-261, 2012.P. Li and L. J. Jiang, "The far field transformation for the antenna mod- eling based on spherical electric...
近场和远场的界限取决于传输的频率和电线尺寸,通常由下列两种近似公式来计算两者边界: The distant field area is refers to the electromagnetic field and the antenna separates, by plane wave way in spatial dissemination.The near field and the distant field boundary is decided by the transmission ...
This letter presents the design of a switchable near-field (NF) and far-field (FF) reader antenna for ultra-high frequency (UHF) radio frequency identification (RFID) applications. Current distribution of an antenna array comprised of four dipoles can be switched via reconfigurable feeding network...
D. A. Mitsoudis: Near-and far-field boundary conditions for a finite element method for the Helmholtz equation in in axisymmetric problems of underwater... DA Mitsoudis - 《Acta Acustica United with Acustica》 被引量: 3发表: 2007年 Near and far field modelling of P.E.C. cavity-backed ...
A planar near-field to far-field transformation using an equivalent magnetic current approach A method is presented for computing far-field antenna patterns from near-field measurements. The method utilizes near-field data to determine equivalent ma... P Petre,TK Sarkar - IEEE Antennas & Propagatio...
E. S. Gillespie, "Measurement of antenna radiation characteristics on far-field ranges", in Antenna handbook, Edited by Y.T.Lo & S.W.Lee, Van Nostrand Reinhold Company, New York, 1993.Gillespie, E.S. (1988). Measurement of Antenna Radiation Characteristics on Far-Field Ranges. Lo, Y.T...
The deformation reflector antenna phase center correction method based on the far field can effectively calculate the phase center adjustment amount of a deformation reflector antenna and be used for adjusting a feed source of the deformation reflector antenna.连培园...
How is the general dipole radiation far field equation derived? The equation is derived from Maxwell's equations, which govern the behavior of electromagnetic fields. It is also based on the dipole approximation, which assumes that the antenna is much smaller than the wavelength of the emitted ra...
3.The antenna of claim 1, wherein the first field is a magnetic field and the first mode of radio frequency identification is near field radio frequency identification. 4.The antenna of claim 1, wherein the second field is an electromagnetic field and the second mode of radio frequency ident...
The fast diagnosis of antenna arrays from a small number of far-field measurements is addressed. With the a priori knowledge of the failure-free array radiation pattern, it is possible to reformulate the diagnosis problem such as only the faulty elements or the localized field differences have to...