Electric wave absorption rate measurement Service
(in near-field / in far-field)

Model No. SEAS

With our experience of measuring the Electric wave absorption rate(Electric wave absorber, Noise suppression sheet / In near-field, In far-field )of over 1000 samples per year and in developing measurement devices, KEYCOM offers precise measurement methods and devices that make it possible to obtain accurate values quickly.

Devices developed by Keycom for the measurement of the specific electric permittivities and rates of absorption of radio waves have been standardized by IEC and JIS.

👉 If you are interested in measurement systems for developing wave absorption materials, please check here

👉 If you need ready-made wave absorption sheet or other EMC tools, please check here

Measurable Sample Size / Frequency

Only a part of basic information is shown here. Please feel free to contact us for details.

Far/Near Field	Type	Frequency Range	Sample Size
In far-field	•Vertical incidence type •Diagonal incidence type	(1GHz)2.6GHz-26.5GHz	About 450mm×450mm (300mm×300mm or more)
In far-field	•Vertical incidence type •Diagonal incidence type	26.5-110GHz	About 250mm×250mm
In near-field	For near-field	0.1GHz-3GHz	100mm×50mm or more
		3GHz-18GHz
		18GHz-40GHz

Conforming Standards

Methods for measuring the dielectric characteristics of fine ceramics in the millimeter-wave region

Part2:Open resonator method -JIS R 1660-2:2004-

Noise Suppression Sheet for digital devices and equipment　

Part2:Definitions and general Properties -IEC62333-1:2006-05-
Part3:Measuring method-IEC62333-2:2006-05-

Methods for measuring the rate of absorption of radio waves for wave absorbers in the millimeter-wave region　-JIS R 1679:2007-

Measurement Methods for Reflectivity of Electromagnetic Wave Absorbers in Millimeter Wave Frequency -IEC62431-

Service Deliverly Date

Usual delivery period: 1 week (negotiable if express delivery is required)
Delivery at the end of the year or other busy periods: 2 weeks (negotiable if express delivery is required)
Delivery in the case of time-consuming measurements: 2~3 weeks (negotiable if express delivery is required)

In the case of Special Samples difficult to measure

Even in the case of measurements which require complex technology / method or instruments which are not available at the moment, if we find it is theoretically possible to perform measurement, KEYCOM will do its best to get it done, by utilizing our abundant experience in developing various measurement devices.

Please call us for a consultation (note that the delivery period is longer than usual, at 3 weeks or more).

Example:Measurement method developed in November 2005→ measurement of the electric permittivity and the dielectric tangent for ultrathin films (0.01μm) with low-frequency waves.

Necessary Information

Before using our measurement service, we would like you to let us know some information about your samples via e-mail( info@keycom.co.jp )

【Informetion we want to know】

Information listed below is very useful for us to implement measurement smoothly.

Of course, you do NOT need to answer all the questions that are unclear.

Required measurement frequency
Details of sample (Maximum size of the object: thickness x height x width, as well as the number of samples).
Information regarding sample material(s)
Important points regarding the handling of the sample (conductivity, volatility, etc.)
Desired temperature for performing the measurements (normal temperature, etc.)
Please provide detailed information in case the sample needs to be prepared by Keycom (e.g. 48% alcohol solution)

Electric wave absorption rate measurement Service (in near-field / in far-field)