KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
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Magnetic property / Permeability (μr')
measurement system

Model No. PER
KEYCOM develops versatile measurement systems for the magnetic substance characteristics of ESR (electron spin resonance) measurement and the measurement of permeability by S parameter method, etc.

Contents

Magnetic property characteristics measurement system
per01002050701-01
KEYCOM’s magnetic property characteristics measurement system delivers ideal measurement solutions for complex permeability μr'- jμr'', ferromagnetic resonance relaxation coefficient α, resonant line width ΔH, and saturation magnetization 4πMs in wideband from 100kHz up to 25GHz (30GHz).
Its simple measurement process of setting your disk or square specimen on the microstripline and sweeping the frequency with your vector network analyzer makes your measurement easier and more accurate.
Please also refer to the webpage of KEYCOM's measurements, evaluations and analyses service center.
 
ESR measurement system for magnetic property
esr05002061101-07
This system is for the magnetic materials, especially the best for the research such as Spintoronics and Quantum dots technology.
・ It has the measurement sensitivity more than that of standard type X band ESR system, because it uses ferromagnetic resonance(FMR) .
・ You can rotate the specimen by two axis accurately, and can incline the specimen.
・ You can change the static magnetic field from zero to high magnetic field up to 500 mT.
S-parameter method
Reflection and transmission mode coaxial tube and waveguide type dielectric constant, dielectric loss tangent, permeability, measurement system
dps08002011118-07
KEYCOM provides S-parameter method measurement systems in two modes, the reflection mode and the transmission mode, to address the individual purposes.
Both modes measure the complex permittivity (εr) and complex permeability (μr) at the same time, and the proper usage is as follows.
The optional software DMP-70 calculates the absorption ratio and the reflection ratio of electromagnetic absorbers based on the complex εr and complex μr.
 
S-parameter method
Free space type reflection mode for flat plate dielectric constant and permeability measurement system
dps09002981027-08
Unlike the coaxial-tube-type or a waveguide-type methods, this method does not involve errors caused by air-gaps since the specimens are not installed in a fixture.
Practical data can be obtained even when the specimen is placed on a rough, uneven surface. It is compact and allows specimens to be measured by flat-wave because of the direct installment of lens with an antenna. It performs measurements by monitoring the S11 parameter via connections of a test fixture to a vector network analyzer and a PC.
 
S-parameter method
Free space type transmission mode for flat plate dielectric constant and permeability measurement system
dps21002040614-08
Unlike a coaxial tube type or a wave guide tube type, this method does not make errors caused by air-gap because specimens are not put into a fixture.
Practical data can be obtained even at the rough, uneven surfaces where the specimen is placed on. It enables compactness and measuring specimens by flat-wave because of direct installment of lens with an antenna. Measurement is achieved by monitoring S21 & S11 parameter with connections of a test fixture to a vector network analyzer and PC.
 
Angle of incidence change method, dielectoric constant, dielectric loss tangent, permeability measurement system
dps22002040516-08
It can be measured the dependency on angle of incidence of the magnitude and phase of the reflection coefficient in both the TE wave and the TM wave. Complex relative permittivity and complex permeability are estimated from these measured values. Unlike the coaxial-tube-type or a waveguide-type methods, this method does not involve errors caused by air-gaps since the specimens are not installed in a fixture.
The lens attached to antenna enables to measure samples with plane wave, resulting in the high measurement accuracy.
This method using a parallel beam from a antenna can reduce the size of a specimen.
In all frequency range,. εr and μr can be obtained.
 
Eripsometore method, dielectric constant and permeability measurement system
dps02002051012-05
Vector network analyzer is not required, as it is a scalar measurement.
Dielectric constant compared with source and permeability compared with source can be measured the difference between TE TM wave of the reflection coefficient and amplitude ratio of the wave and phase.
Unlike coaxial tube or waveguide, and the error by the airgap doesn't occur as it doesn't put the sample in Ficscha.
It is compact size installing a lens to an antenna.
You can measure a sample by plane wave.
As the sample can be set close to the antenna, the sample will be small in size, you can read εr' and μr at frequency.