Effective magnetic permeability measurement in composite resonator structures

2009 ◽  
Author(s):  
Mauro Bologna ◽  
Alessandra Petri ◽  
Bernardo Tellini ◽  
Carmine Zappacosta
Keyword(s):  
Magnetic Permeability ◽  
Permeability Measurement ◽  
Effective Magnetic Permeability ◽  
Composite Resonator

scholarly journals INVESTIGATION ON AN EFFECTIVE MAGNETIC PERMEABILITY OF THE ROD-SHAPED FERRITES

2017 ◽  
Vol 65 ◽  
pp. 43-48 ◽  
Author(s):  
Evgueni Kaverine ◽  
Sebastien Palud ◽  
Franck Colombel ◽  
Mohamed Himdi
Keyword(s):  
Magnetic Permeability ◽  
Effective Magnetic Permeability

Composite of Flake-Shape Sendust Particles and its Application on Patch Antenna

2013 ◽  
Vol 765-767 ◽  
pp. 3086-3089
Author(s):  
Meng Ran Guan ◽  
Xin Wang ◽  
Hui Bin Zhang ◽  
Long Jiang Deng ◽  
Jian Liang Xie
Keyword(s):  
Ball Milling ◽  
Magnetic Permeability ◽  
Patch Antenna ◽  
Shape Factor ◽  
Effective Magnetic Permeability ◽  
Simulation Results ◽  
Microwave Magnetic Permeability ◽  
Very High ◽  
Type Composite

Flake-shape Sendust particles with high microwave magnetic permeability and permittivity were prepared with the method of wet ball milling, and then mixed with the polymer to get a sheet-type composite as an effective EMW absorber. It was found that the composite has a very high shape factor owing to the flaky Sendust particles, which can break through the traditional Snoeks limit, and achieve a high effective magnetic permeability. HFSS simulation results show the sheet-type composite can be used on the patch antenna for improving the front-to-back ratio of the hand-held patch antenna and reducing the EMW pollution around antenna operators.

scholarly journals Design and Implementation of a Test Fixture for ELF Schumann Resonance Magnetic Antenna Receiver and Magnetic Permeability Measurements

Electronics ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 171
Author(s):  
Giorgos Tatsis ◽  
Vasilis Christofilakis ◽  
Spyridon K. Chronopoulos ◽  
Panos Kostarakis ◽  
Hector E. Nistazakis ◽  
...  
Keyword(s):  
Magnetic Permeability ◽  
Low Frequency ◽  
Absolute Calibration ◽  
Permeability Measurement ◽  
Test Fixture ◽  
Input Noise ◽  
Prototype Test ◽  
Total Input ◽  
Northwestern Greece ◽  
Total Sensitivity

This paper presents a prototype test fixture for the absolute calibration and estimation of the equivalent magnetic flux noise of the extremely low frequency (ELF) Schumann resonant (SR) magnetic antenna receiver and rods’ magnetic permeability measurement. The test fixture, for ELF the SR detector’s calibration, consists of a constructed coil, the signal generator, and the oscilloscope. The ELF SR detector used has been operating since 2016 near the Doliana village in the Ioannina prefecture, Northwestern Greece. At precisely this spot, far away from electromagnetic noise, the whole setup and experiment took place. The experiments performed with the proposed test fixture showed a sensitivity of 70 nV/pT/Hz and an apparent magnetic permeability at around 250 for the magnetic antenna. The total sensitivity of the ELF receiver was 210 mV/pT near 20 Hz, while the total input noise was around 0.04 pT.

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