scholarly journals An Overview on Synthesis Techniques for Near-Field Focused Antennas

2020 ◽  
Author(s):  
Marcos R. Pino ◽  
Rafael G. Ayestarán ◽  
Paolo Nepa ◽  
Giuliano Manara
Keyword(s):  
Near Field ◽  
Synthesis Techniques

Near-field scanning optical microscopy

1986 ◽  
Vol 44 ◽  
pp. 642-643
Author(s):  
E. Betzig ◽  
A. Harootunian ◽  
M. Isaacson ◽  
A. Lewis
Keyword(s):  
Near Field ◽  
Optical Microscope ◽  
Visible Radiation ◽  
Field Methods ◽  
Optical Elements ◽  
Optical Region ◽  
Order Of Magnitude ◽  
Nondestructive Imaging ◽  
Scanning Optical Microscopy ◽  
Near Field Scanning

In general, conventional methods of optical imaging are limited in spatial resolution by either the wavelength of the radiation used or by the aberrations of the optical elements. This is true whether one uses a scanning probe or a fixed beam method. The reason for the wavelength limit of resolution is due to the far field methods of producing or detecting the radiation. If one resorts to restricting our probes to the near field optical region, then the possibility exists of obtaining spatial resolutions more than an order of magnitude smaller than the optical wavelength of the radiation used. In this paper, we will describe the principles underlying such "near field" imaging and present some preliminary results from a near field scanning optical microscope (NS0M) that uses visible radiation and is capable of resolutions comparable to an SEM. The advantage of such a technique is the possibility of completely nondestructive imaging in air at spatial resolutions of about 50nm.

Principles of Planar Near-Field Antenna Measurements

2007 ◽  
Author(s):  
Stuart Gregson ◽  
John McCormick ◽  
Clive Parini
Keyword(s):  
Near Field ◽  
Antenna Measurements

Immobilization of Radionuclides on Iron Canister Material at Simulated Near-field Conditions

2008 ◽  
Author(s):  
Daqing Cui ◽  
Ylva Ranebo ◽  
Jeanett Low ◽  
Vincenzo Rondinella ◽  
Jinshan Pan ◽  
...  
Keyword(s):  
Near Field ◽  
Field Conditions

Magnetic Tag Antenna for UHF Near-field and Far-Field RFID Applications

2015 ◽  
Vol 5 (2) ◽  
pp. 119
Author(s):  
Mondher Dhaouadi ◽  
M. Mabrouk ◽  
T. Vuong ◽  
A. Ghazel
Keyword(s):  
Near Field ◽  
Far Field ◽  
Rfid Applications

Decoupled Location Parameter Estimation of Near-Field Sources with Symmetric ULA

2011 ◽  
Vol E94-B (9) ◽  
pp. 2646-2649
Author(s):  
Bum-Soo KWON ◽  
Tae-Jin JUNG ◽  
Kyun-Kyung LEE
Keyword(s):  
Parameter Estimation ◽  
Near Field ◽  
Location Parameter

Channel Capacity Improvement in Near-Field MIMO System Using Metal Wires

2013 ◽  
Vol E96.B (5) ◽  
pp. 1141-1148 ◽  
Author(s):  
Dalin ZHANG ◽  
Toshikazu HORI ◽  
Mitoshi FUJIMOTO
Keyword(s):  
Channel Capacity ◽  
Mimo System ◽  
Near Field ◽  
Capacity Improvement ◽  
Metal Wires

Direction-of-Arrival Estimation for Near-Field Sources with Multiple Symmetric Subarrays

2013 ◽  
Vol E96.B (2) ◽  
pp. 553-560
Author(s):  
Tomoyuki KITADA ◽  
Jun CHENG ◽  
Yoichiro WATANABE
Keyword(s):  
Near Field ◽  
Direction Of Arrival ◽  
Direction Of Arrival Estimation
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