Journal ArticleDOI
Far-field predictions from near-field measurements using an exact integral equation solution
R. Laroussi,G.I. Costache +1 more
TLDR
In this paper, an exact integral equation solution to the wave propagation problem is used to transform the near-field data to the far field using two closed surfaces enclosing all sources and inhomogeneities.Abstract:
This paper presents a new approach to derive far-field data needed in antenna and EMI/EMC testing from near-field measurements. An exact integral equation solution to the wave propagation problem is used to transform the near-field data to the far field. The method requires near-field measurements on two closed surfaces enclosing all sources and inhomogeneities. The approach is validated with numerical simulation of measurements of fields radiated from a known antenna. >read more
Citations
More filters
Journal ArticleDOI
Near-field to near/far-field transformation for arbitrary near-field geometry utilizing an equivalent electric current and MoM
Tapan K. Sarkar,A. Taaghol +1 more
TL;DR: In this article, a method for computing near and far-field patterns of an antenna from its near-field measurements taken over an arbitrarily shaped geometry is presented, where the measured data need not satisfy the Nyquist sampling criteria and an electric field integral equation is developed to relate the near field to the equivalent electric current.
Journal ArticleDOI
A genetic algorithm based method for source identification and far-field radiated emissions prediction from near-field measurements for PCB characterization
TL;DR: In this article, a new method for predicting the far-field radiated emissions and for finding the radiation sources of a device from near-field measurements is presented, based on the substitution of the original device by an equivalent set of elemental dipoles, placed over the main radiating sources, which radiate the same near field (and therefore, farfield).
Journal ArticleDOI
Antenna Modeling by Infinitesimal Dipoles Using Genetic Algorithms
TL;DR: In this paper, the binary GA optimization method is used to simulate antennas from their near-field distribution by a set of infinitesimal dipoles, such as dipole, loop, waveguide, and dielectric resonator antenna.
Journal ArticleDOI
Efficient Near-Field Far-Field Transformation for Nonredundant Sampling Representation on Arbitrary Surfaces in Near-Field Antenna Measurements
TL;DR: In this paper, a non-redundant sampling representation on arbitrary surfaces in near-field antenna measurements together with a direct near field far-field transformation is described, where the utilized sampling criterion depends on the electrical size of the antenna under test (AUT) along with the separation between the AUT and the measurement surface.
References
More filters
Book
Finite Elements for Electrical Engineers
TL;DR: In this paper, the authors considered the problem of finite element solutions to the scalar Helmholtz equation and showed that the solution can be found in finite elements in one dimension.
Journal ArticleDOI
An overview of near-field antenna measurements
TL;DR: In this paper, a brief history of near-field antenna measurements with and without probe correction is outlined, beginning with ideal probe scanning on arbitrary surfaces and ending with arbitrary probes scanning on planar, cylindrical, and spherical surfaces.
Journal ArticleDOI
An examination of the theory and practices of planar near-field measurement
TL;DR: Using computer simulation, several fundamental issues in planar near-field measurement are examined in this paper, and the results indicate that some of the prevailing views of practices regarding the evanescent modes, sampling and filtering of data, and the selection of the location and directivity of the probe are incomplete or misleading.
Journal ArticleDOI
Far-field pattern determination from the near-field amplitude on two surfaces
TL;DR: In this article, a new near-field/far-field transformation technique is developed, based on the measurement of the near field amplitude over two surfaces surrounding the antenna under test.
Related Papers (5)
Near-field to near/far-field transformation for arbitrary near-field geometry, utilizing an equivalent magnetic current
A. Taaghol,Tapan K. Sarkar +1 more
Planar near-field to far-field transformation using an equivalent magnetic current approach
P. Petre,T.K. Sarkar +1 more