A simple estimation of TRP and radiation pattern for mobile antennas using planar near-field scanning method

2016 ◽  
Vol 58 (6) ◽  
pp. 1437-1443
Author(s):  
Chulsoon Hwang ◽  
Hark-Byeong Park ◽  
Hyun Ho Park
Keyword(s):  
Radiation Pattern ◽  
Near Field ◽  
Scanning Method ◽  
Mobile Antennas ◽  
Simple Estimation ◽  
Near Field Scanning

Near Field EMC Scanning Method Based on an E-Field Collapse

2015 ◽  
Author(s):  
Jeff Dunnihoo ◽  
Pasi Tamminen ◽  
Toni Viheriäkoski
Keyword(s):  
Near Field ◽  
Electronic Systems ◽  
Inexpensive Method ◽  
Scanning Method ◽  
Field Information ◽  
Novel Method ◽  
Near Field Scanning

Abstract In this study we present a novel method to use a field collapse method together with fully automated near field scanning equipment to construct E- and H-field information of a system during transient ESD events. This inexpensive method provides an alternative way for system designers to validate and analyze the EMC/ESD capability of electronic systems without TLP pulsers, ESD simulators, or precision inductive current probes.

Modeling Magnetic Radiations of Electronic Circuits Using Near-Field Scanning Method

2007 ◽  
Vol 49 (2) ◽  
pp. 391-400 ◽  
Author(s):  
Yolanda Vives-Gilabert ◽  
Christian Arcambal ◽  
Anne Louis ◽  
Franois de Daran ◽  
Philippe Eudeline ◽  
...  
Keyword(s):  
Near Field ◽  
Electronic Circuits ◽  
Scanning Method ◽  
Near Field Scanning

scholarly journals Decoupling of Multifrequency Dipole Antenna Arrays for Microwave Imaging Applications

2010 ◽  
Vol 2010 ◽  
pp. 1-8 ◽  
Author(s):  
E. Saenz ◽  
K. Guven ◽  
E. Ozbay ◽  
I. Ederra ◽  
R. Gonzalo
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Antenna Arrays ◽  
Mutual Coupling ◽  
Near Field ◽  
Field Measurements ◽  
Dipole Antenna ◽  
Far Field ◽  
Radiated Power ◽  
Near Field Scanning

The mutual coupling between elements of a multifrequency dipole antenna array is experimentally investigated byS-parameter measurements and planar near-field scanning of the radiated field. A multifrequency array with six dipoles is analyzed. In order to reduce the coupling between dipoles, a planar metasurface is placed atop the array acting as superstrate. The mutual coupling of the antenna elements in the absence and presence of the superstrate is presented comparatively. Between 3 and 20 dB mutual coupling reduction is achieved when the superstrate is used. By scanning the field radiated by the antennas and far-field measurements of the radiation pattern, it is observed that the superstrate confines the radiated power, increases the boresight radiation, and reduces the endfire radiation.

A Laboratory Investigation into the Measurement of Optical Fibre Parameters

1986 ◽  
Vol 23 (3) ◽  
pp. 197-210
Author(s):  
A. Owens
Keyword(s):  
Near Field ◽  
Numerical Aperture ◽  
Field Measurements ◽  
Refractive Index Profile ◽  
Index Profile ◽  
Scanning Method ◽  
Graded Index ◽  
The Core ◽  
Index Fibre ◽  
Near Field Scanning

An undergraduate experiment, of approximately six hours duration, is presented, in which the refractive index profile of a graded index fibre is measured using the near-field scanning method. The numerical aperture is obtained from far-field measurements and the core and cladding diameters are measured directly using an optical bench microscope and stage micrometer.

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