scholarly journals Analysis of Near Field Distribution Variation Using AWAS Electromagnetic Code for WIMAX

2014 ◽  
Author(s):  
Chhaya Dalela ◽  
Prasad MVSN ◽  
Rahul Namawa
Keyword(s):  
Field Distribution ◽  
Near Field

scholarly journals Visualization of microwave near-field distribution in sodium chloride and glucose aqueous solutions by a thermo-elastic optical indicator microscope

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhirayr Baghdasaryan ◽  
Arsen Babajanyan ◽  
Levon Odabashyan ◽  
Jung-Ha Lee ◽  
Barry Friedman ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Field Distribution ◽  
Near Field ◽  
Absorption Properties ◽  
Novel Approach ◽  
Concentration Changes ◽  
Biological Liquids ◽  
Optical Indicator ◽  
Distribution Intensity

AbstractIn this study, a new optical method is presented to determine the concentrations of NaCl and glucose aqueous solutions by using a thermo-elastic optical indicator microscope. By measuring the microwave near-field distribution intensity, concentration changes of NaCl and glucose aqueous solutions were detected in the 0–100 mg/ml range, when exposed to microwave irradiation at 12 GHz frequency. Microwave near-field distribution intensity decreased as the NaCl or glucose concentration increased due to the changes of the absorption properties of aqueous solution. This method provides a novel approach for monitoring NaCl and glucose in biological liquids by using a CCD sensor capable of visualizing NaCl and glucose concentrations without scanning.

scholarly journals Reconstruction of the near-field distribution in an X-ray waveguide array

2017 ◽  
Vol 50 (3) ◽  
pp. 701-711 ◽  
Author(s):  
Qi Zhong ◽  
Lars Melchior ◽  
Jichang Peng ◽  
Qiushi Huang ◽  
Zhanshan Wang ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Field Distribution ◽  
Phase Retrieval ◽  
Near Field ◽  
Field Pattern ◽  
Waveguide Array ◽  
X Ray ◽  
Field Patterns ◽  
Thickness Variations ◽  
Far Field Pattern

Iterative phase retrieval has been used to reconstruct the near-field distribution behind tailored X-ray waveguide arrays, by inversion of the measured far-field pattern recorded under fully coherent conditions. It is thereby shown that multi-waveguide interference can be exploited to control the near-field distribution behind the waveguide exit. This can, for example, serve to create a secondary quasi-focal spot outside the waveguide structure. For this proof of concept, an array of seven planar Ni/C waveguides are used, with precisely varied guiding layer thickness and cladding layer thickness, as fabricated by high-precision magnetron sputtering systems. The controlled thickness variations in the range of 0.2 nm results in a desired phase shift of the different waveguide beams. Two kinds of samples, a one-dimensional waveguide array and periodic waveguide multilayers, were fabricated, each consisting of seven C layers as guiding layers and eight Ni layers as cladding layers. These are shown to yield distinctly different near-field patterns.

Near Field Distribution of Hollow Dielectric Wall Diagonal Horn Antennas

1999 ◽  
Vol 16 (1) ◽  
pp. 27-32 ◽  
Author(s):  
V N Tiwari ◽  
T Tiwari ◽  
R K Jha
Keyword(s):  
Field Distribution ◽  
Near Field ◽  
Horn Antennas ◽  
Dielectric Wall

Field distribution on metallic and dielectric nanoparticles observed with a fluorescent near-field optical probe

2005 ◽  
Vol 97 (10) ◽  
pp. 104322 ◽  
Author(s):  
L. Aigouy ◽  
M. Mortier ◽  
J. Giérak ◽  
E. Bourhis ◽  
Y. De Wilde ◽  
...  
Keyword(s):  
Field Distribution ◽  
Near Field ◽  
Optical Probe

Optimization of the optical near-field distribution of metal multilayer dielectric gratings for pulse compressors

2013 ◽  
Author(s):  
Heyuan Guan ◽  
Yunxia Jin ◽  
Shijie Liu ◽  
Fanyu Kong ◽  
Yin Du ◽  
...  
Keyword(s):  
Field Distribution ◽  
Near Field ◽  
Dielectric Gratings ◽  
Multilayer Dielectric

Correction of the Measured Amplitude-Phase Field Distribution in the Near Field from the Directional Pattern of the Probe

2018 ◽  
Vol 61 (1) ◽  
pp. 67-71 ◽  
Author(s):  
N. V. Anyutin ◽  
I. M. Malai ◽  
M. A. Ozerov ◽  
A. V. Titarenko ◽  
M. S. Shkurkin
Keyword(s):  
Field Distribution ◽  
Phase Field ◽  
Near Field ◽  
Directional Pattern

scholarly journals Measurement of the Near Field Distribution of a Microwave Horn Using a Resonant Atomic Probe

2019 ◽  
Vol 9 (22) ◽  
pp. 4895 ◽  
Author(s):  
Jingxu Bai ◽  
Jiabei Fan ◽  
Liping Hao ◽  
Nicholas L. R. Spong ◽  
Yuechun Jiao ◽  
...  
Keyword(s):  
Field Distribution ◽  
Electric Fields ◽  
Microwave Field ◽  
Electric Field Distribution ◽  
Near Field ◽  
Field Measurements ◽  
Amplitude Distribution ◽  
Field Coupling ◽  
All Optical ◽  
Atomic Probe

We measure the near field distribution of a microwave horn with a resonant atomic probe. The microwave field emitted by a standard microwave horn is investigated utilizing Rydberg electromagnetically inducted transparency (EIT), an all-optical Rydberg detection, in a room temperature caesium vapor cell. The ground 6 S 1 / 2 , excited 6 P 3 / 2 , and Rydberg 56 D 5 / 2 states constitute a three-level system, used as an atomic probe to detect microwave electric fields by analyzing microwave dressed Autler–Townes (AT) splitting. We present a measurement of the electric field distribution of the microwave horn operating at 3.99 GHz in the near field, coupling the transition 56 D 5 / 2 → 57 P 3 / 2 . The microwave dressed AT spectrum reveals information on both the strength and polarization of the field emitted from the microwave horn simultaneously. The measurements are compared with field measurements obtained using a dipole metal probe, and with simulations of the electromagnetic simulated software (EMSS). The atomic probe measurement is in better agreement with the simulations than the metal probe. The deviation from the simulation of measurements taken with the atomic probe is smaller than the metal probe, improving by 1.6 dB. The symmetry of the amplitude distribution of the measured field is studied by comparing the measurements taken on either side of the field maxima.

Optical near-field distribution around nano hemi-shell periodic structure for SERS applications

2009 ◽  
Author(s):  
Tetsuo Sakai ◽  
Eric Diebold ◽  
Yuji Nishizawa ◽  
Yuto Tanaka ◽  
Kevin Vora ◽  
...  
Keyword(s):  
Periodic Structure ◽  
Field Distribution ◽  
Near Field
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