The near field frequency response has the smoothest pattern, but with several notches at higher frequencies At larger measuring distances the frequency
When the electric field strength and the magnetic field strength are measured, how much the distance between the transmission and the receiving antennas
Abstract—We report a frequency-domain near-field-to-far-field transform (NFFFT) for the numerical modeling of radiation and
The terms “far field” and “near field” describe the fields around an an- tenna or, more generally, any electromagnetic-radi- ation source The names imply that
This technique gives good results at higher frequencies but fails at low frequencies where the window is too short for providing sufficient frequency resolution
correction for pattern effects or frequency response; thus we assume thatwe can measure the electric field at any point on a plane for any frequency or
frequencies and vertical electric field polarization [3,4] For strong excitation of currents on long, horizontal conductors, we consider the use
Keywords: electromagnetic fields measurements, the near field, the far field 1 Introduction ating on 10 GHz frequency the far field boundary is at
aperture size, frequency range, gain, beamwidth, polarization, field of view, Keywords: Antenna Measurements; Far-field; Near-field; Range Configuration
Time domain aspect is dominated by the major frequency harmonics Far field • E and H decrease as 1/r , Z=Cte=377Ω (empty environment impedance)