Magnet powder (oxidized non-ferrous) and rubber resin capable of absorbing electromagnetic waves are mixed
in a certain ratio, fabricated in extruded rubber sheets, and then attached to the part to absorb unnecessary electromagnetic waves.
Company overview        KDDLtd.  Tokyo Minato Ward Roppongi 4-3-11-223             At the current delivery of goods destination
Medical treatment business      Shiga Prefecture Yasu City Kibe 930    
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Scaipnet (with camera) is set up. It is Scaip name masachi6.
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It delivers it to the foreign country.     As for the invoice proof, it is E-mail, and fax.
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Magnetic powder (metal, ferrite) and rubber resin capable of absorbing electromagnetic wave are mixed in certain ratio, manufactured, extruded in drawing and layer types, and then attached to the part to absorb unnecessary electromagnetic waves. This can be manufactured in a type where double-sided tape is attached to the other side for easy use and a reflection plate (various metal foils such as Cu, Al, etc.) is attached to improve performance.

Product specifications for material and thickness are designed and manufactured to be suitable for standard and main operation frequency by the user.




This is easy to manufacture and shape due to its ductile property (Thomson, half-manufacturing).
Thin foil can be made to meet customer demand (≥0.10 mm).
Performance can be improved by joining it with tape, metal foil, etc.
This can be produced in roll type for improved productivity and lowered loss ratio.

Unnecessary electromagnetic waves are reduced to thermal energy by changing the energy of unnecessary electromagnetic waves that enter the electromagnetic wave absorber.

Absorber particle structure
Metal

Metal Flake


Particle arrangement type of sheet

 
Forming method Manufacturing function and size Features
Calender - Thickness:0.1~10mm,
  width:<800mm
- Length: customers specifications		 * Easy processing and production
Extrusion - Thickness:0.2~10mm, width:<350mm
- Length: customers specifications
 * Easy manufacturing of small-type
* Extrusion die-type
* Exact size Product
Injection Cylindrical/bar type
=> customers specifications
 * Exact size product
* Injection die-type
No. Item Reference value Measure value
1 Flame retarding UL 94V - 0 94V - 0
2 Magnetic characteristics
(1Khz)
 µi = 13±2 µi = 13±2
3 Density D = 3.6±0.2 (g/cm2) D = 3.6±0.2 (g/cm2)
4 Hardness H = 90±5˚ (A) 91
5 Tensile strength (Tb)   50±30 (kg/cm2)
6 Elongation (Eb)   15±10 (%)
7 Reliability   Strength before test Strength after test
Moisture resistance test 90 90
Heat resistance test 90 92
Heat-cycle 90 92
8 Material constant vector network analyzer :HP 8722D
Electric wave absorptivity Computer program USE
Reflection loss assembled measurement
(Attachment in the sequence of sample/short in end side)
Specific gravity Specific gravity meter MODEL : ED- 120T
Hardness Hardness measurement device MODEL : GS - 706
Tensile strength Universal tester MODEL : UTM - R300
Constant temperature and constant humidity Constant temperature and constant humidity bath MODEL : C - CTH1
Reliability DRY OVEN MODEL: C - 012

Reflection loss according to the thickness
Material constant by frequency
0.3GHz 0.8GHz 1.8GHz 2.4GHz 5.6GHz 12GHz 18GHz
Material constant
ε1 22.8 22.8 22.5 22.2 21.3 19.7 18.6
ε11 0.7 1.0 1.7 1.8 2.9 4.2 4.4
µ1 8.5 5.1 2.5 1.9 0.6 0.5 0.8
µ11 3.1 4.3 3.5 3.0 1.4 0.3 0.02
Material constant graph
Electric wave absorptivity graph
Reflection loss according to the thickness
Material constant by frequency
0.2GHz 0.8GHz 1.8GHz 2.4GHz 5.6GHz 12GHz 18GHz
Material constant
ε1 23.3 23.3 23.1 22.9 22.8 22.8 22.7
ε11 1.7 1.4 1.2 1.1 0.9 1.0 1.1
µ1 9.6 8.7 6.3 5.7 2.6 0.9 0.4
µ11 2.2 3.0 3.9 3.8 3.5 2.3 1.5
Material constant graph
Electric wave absorptivity graph

Kind of absorber in 0.8GHz level
SRA01-020 SRA01-040 SRA01-060 SRA01-080 SRA01-100 SRA01-150 SRA01-200
0.2mm 0.4mm 0.6mm 0.8mm 1.0mm 1.5mm 2.0mm
Absorptivity
(dB/cm)		 0.14 0.27 0.41 0.55 0.68 1.03 1.37
Attenuation ability
(dB)		 0.24 0.52 0.72 0.97 1.21 1.85 2.54
Application target products : Cellular phone, GSM etc

Kind of absorber in 1.8GHz level
SRA08-020 SRA08-040 SRA08-060 SRA08-080 SRA08-100 SRA08-150 SRA08-200
0.2mm 0.4mm 0.6mm 0.8mm 1.0mm 1.5mm 2.0mm
Absorptivity
(dB/cm)		 0.36 0.71 1.07 1.42 1.78 2.66 3.55
Attenuation ability
(dB)		 0.48 0.96 1.45 1.97 2.50 3.99 5.80
Application target products : PCS phone, DMS etc

Kind of absorber in 2.4GHz level
SRA08-020 SRA08-040 SRA08-060 SRA08-080 SRA01-100 SRA01-150 SRA01-200
0.2mm 0.4mm 0.6mm 0.8mm 1.0mm 1.5mm 2.0mm
Absorptivity
(dB/cm)		 0.41 0.86 1.28 1.71 2.15 3.23 4.32
Attenuation ability
(dB)		 0.52 1.04 1.57 2.14 2.72 4.40 6.43
Application target products : IMT-2000, LNB, Wireless LAN(BLUE-tooth), Mircrowave oven, RF 1D WCDMA, AMPS, IMT-2000: 2 GHzα GPS: 1.57GHz

* The measured values above are standard, and characteristics and thickness of absorber can be adjusted according to the user requirement.
Kind of absorber in 0.8GHz level (Cellular phone, GSM)
SRA08-020 SRA08-040 SRA08-060 SRA08-080 SRA08-100 SRA08-150 SRA08-200
0.2mm 0.4mm 0.6mm 0.8mm 1.0mm 1.5mm 2.0mm
Absorptivity (dB/cm) 0.09 0.17 0.25 0.33 0.41 0.61 0.81
Attenuation ability (dB) 0.20 0.32 0.48 0.65 0.82 1.27 1.75
Application target products: Cellular phone, GSM etc

Kind of absorber in 1.8GHz level
SRA08-020 SRA08-040 SRA08-060 SRA08-080 SRA08-100 SRA08-150 SRA08-200
0.2mm 0.4mm 0.6mm 0.8mm 1.0mm 1.5mm 2.0mm
Absorptivity (dB/cm) 0.26 0.54 0.79 1.06 1.32 1.98 2.63
Attenuation ability (dB) 0.66 1.06 1.63 2.23 2.89 4.95 8.03
Application target products: PCS phone, DMS etc

2Kind of absorber in 2.4GHz level
SRA08-020 SRA08-040 SRA08-060 SRA08-080 SRA08-100 SRA08-150 SRA08-200
0.2mm 0.4mm 0.6mm 0.8mm 1.0mm 1.5mm 2.0mm
Absorptivity (dB/) 0.34 0.66 0.98 1.30 1.63 2.47 3.28
Attenuation ability (dB) 0.79 1.28 1.97 2.73 3.59 6.49 11.60
Application target products: IMT-2000, LNB, Wireless LAN(BLUE-tooth), Mircrowave oven, RF 1D

* The measured values above are standard, and characteristics and thickness of absorber can be adjusted according to the user requirement.
Processing ability

 Since it is possible to process sheet of absorber by Thompson processing and half processing, use is easy.
Set-up of absorber size

 It is the most economical and efficient to set up absorber size after performing actual test with various shapes and sizes for the part where electromagnetic wave is generated or that can be damaged from the electromagnetic wave.


Absorbing region

Type of absorber
Type Aborbing method Frequency Example of absorbing material
Magnetic substance powder mixed type Magnetic loss KHz~MHz Magnetic substance mixed body
Conductive substance powder mixed type Eddy current loss body MHz~GHz Carbon powder mixed
Dielectric substance powder mixed type Inductive loss MHz~GHz Dielectric substance mixed type
λ/4 type Conductivity loss GHz Conductive fiber, ITO film
Magnetic loss Magnetic substance
Inductive loss Dielectric substance



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