Vol.1
CONTENTS
Anechoic Chamber (10m Method) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
4
Anechoic Chamber (3m Method)
6
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8
Anechoic Chamber Outline (3m/10m Method) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
10
Anechoic Chamber for EMI/Microwave/Anechoic Chamber for Microwave Ranges
••••••••••••••••••••••••••••••••••••••
12
Radio wave absorbent box for microwave • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
13
Electromagnetic Absorber • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • •
14
Small-sized Anechoic Chamber (3m Method)
ANECHOIC CHAMBERS Vol.1 1
INTRODUCTION
Tokin EMC Engineering has over 20 years experience developing EMC-related anechoic chambers, open field test sites, and shield rooms, including counter-EMC parts, measurement and
tests, countermeasure diagnosis operation, and radio wave absorbers. Our products are completely in-house designed, which allows us to meet all of customer requirements.
Design concept of open field test site conforming to various standards and regulations and development of excellent Electromagnetic absorbers enable us to provide customers with user-friendly
anechoic chambers. We also meet customer needs for anechoic box (for microwave/experiments), security shield rooms, and other items of special specifications.
Line-up:
Anechoic Chamber (3m/10m Method)
Anechoic Chamber (3m Method)
Small-sized Anechoic Chamber for EMI
Small-sized Anechoic Chamber for EMS/EMI
Anechoic Chamber for EMI/Microwave
Anechoic Chamber for Microwave Ranges
Various Electromagnetic Wave Absorbers
(Kawasaki Anechoic Chamber)
2 ANECHOIC CHAMBERS Vol.1
Anechoic Chamber Business Profile
'80
'86
'87
'90
'91
'94
'95
'96
'97
'98
Sales of open field test sites
Sales of anechoic chambers
Development of radio wave absorbers
FCC Listing (10m regulations)
FCC Listing (3m regulations)
Authorizations of anechoic chambers
(Ferrite absorbers only)
Development of non-flammable
radio wave absorbers
TUV authorized
FIMKO accredited
DAR accredited
NAVLAP accredited
Anechoic Chambers by Frequency Ranges
10kHz
1MHz
30MHz
1GHz
18GHz
100GHz
Performance ranges of shield rooms
Absorption performance of absorbers
Anechoic chamber for EMC
Ferrite radio wave absorbers
100mm
t=6mm
Ferrite/ urethane (non-flammable) matching type radio wave absorber
Anechoic chamber for antenna evaluation (Pyramid type)
Urethane (non-flammable) radio wave absorber
ANECHOIC CHAMBERS Vol.1 3
Anechoic Chamber (10m Method)
Features
● Qualified for various registrations (FCC filing, VCCI registration, DAR, NVLAP, A2LA, and NATA authorizations)
● Mainly composed by ferrite radio wave absorber (TFA).
Wide-ranged radio wave absorbency is available in combination with radio wave matching devices.
● Barrier-free doors allowing for easy transportation of
large-sized devices
● Standard-equipped storage room for amplifiers for the use
in the immunity test
● Applicable to large-sized devices (maximum specification:
a turntable of 10 m in diameter/capacity of 20 tons)
● GP-IB controllable attached facilities allowing for automatic instrumentation in a short time.
(Photo by Oki Engineering Co., Ltd.)
● Additional underground pit construction available for installing counter devices especially in the measuring test of
communication equipment (optional)
Standard Specifications
Type
(m)
Shield inside dimensions
(dB)
Site attenuation characteristic
Field distribution uniformity characteristic (dB)
(IEC61000-4-3 conforming)
(dB)
Shield performance
(MIL STD-285 conforming)
(dB)
Power shielding
(MIL STD-220A conforming)
Composit absorber
Measuring chamber shield inside dimensions (m)
(including an amplifier room)
Door dimensions (m)
Anechoic chamber q
Anechoic chamber w
Measuring room e
Antenna lift
Lifting range (m)
Lifting speed (sec/m)
Turntable
Dimension (m)
Load capacity (kg)
Rotating speed (rpm)
Attached facilities
Power supply
4 ANECHOIC CHAMBERS Vol.1
ALC-10U
ALC-10UL
21.0L✕13.5W✕8.5H
22.0L✕14.0W✕8.5H
Horizontal/Vertical ±3(at 30MHz to 18GHz)
0 to 6(at 80 to 1000MHz)
(Floor type radio wave absorber)
100(at 150kHz to 1000MHz)
60(at 1GHz to 18GHz)
100(at 14kHz to 10GHz)
Ferrite absorber (TFA) + EM wave absorber
8.0L✕5.0W✕3.1H
2.0W✕2.0H(Barrier-free structure)
1.0W✕2.0H
1.0W✕2.0H
1.0 to 4.0
5 to 25(3-step selection, GP-IB control)
3.0
5.0
1000
3000
1.0 to 4.0(3-step selection, GP-IB control)
0.5 to 2.0(3-step selection, GP-IB control)
ITV system/interphone
Power supply panel/filter panel/insulating transformer/lighting, etc.
● ALC-10U
Horizontal polarization
Normalized Site Attenuation
35
10 meters method,Horizontal
Tx:1m / Rx:1 to 4m / Delta:1.5m
BBA9106/UHAPL9108A
25
Center
Front
Rear
Left
Right
15
+3dB
NSA(dB)
–3dB
5
–5
–15
–25
Deviation(dB)
6
4
2
0
–2
–4
–6
30
40
50
70
100
200
300
500
700
1000
Frequency(MHz)
Vertical polarization
Normalized Site Attenuation
35
10 meters method,Vertical
Tx:1m / Rx:1 to 4m / Delta:1.5m
BBA9106/UHAPL9108A
25
Center
Front
Rear
Left
Right
15
+3dB
NSA(dB)
–3dB
5
–5
–15
–25
Deviation(dB)
6
4
2
0
–2
–4
–6
30
40
50
70
100
200
300
500
700
1000
Frequency(MHz)
Site attenuation measuring method
Measurement distance (D) : 10m
D
D
D
D
RIGHT
D
BACK
CENTER
FRONT
LEFT
Transmitting antenna (Turn table)
Receiving antenna
ANECHOIC CHAMBERS Vol.1 5
Anechoic Chamber (3m Method)
Features
● Qualified for various registrations (FCC Listing, VCCI approval)
● Using ferrite absorber (TFA) only which allows for various
standard certifications (ALC-3F). Additional radio wave
matching device (ALC-3N) is available for the frequency
ranges from 30 MHz to 18 GHz.
● Standard-equipped storage room for amplifiers for the
use in the immunity test.
● GP-IB controllable attached facilities for automatic instrumentation in a short time.
● Easy transportation of large-sized devices by adoption of
barrier-free type doors (optional)
(Photo by PIONEER CORPORATION)
Standard Specifications
Type
(m)
Shield inside dimensions
(dB)
Site attenuation characteristic
(ANSI C63.4 sweep frequency)
(1GHz and above: correlative with an open field test site)
Field distribution uniformity characteristic (dB)
(IEC61000-4-3 conforming)
(dB)
Shield performance
(MIL STD-285 conforming)
(dB)
Power shielding
(MIL STD-220A conforming)
Radio wave absorber
Measuring chamber shield inside dimensions (m)
(including an amplifier room)
Anechoic chamber q
Door dimensions(m)
Anechoic chamber w
Measuring room e
Lifting range (m)
Antenna lift
Lifting speed (sec/m)
Dimension (m)
Turntable
Load capacity (kg)
Rotating speed (rpm)
Attached facilities
Power supply
ALC-3F
ALC-3N
9.2L✕6.2W✕5.6H
±4(at 30MHz to 1GHz)
±3(at 30MHz to 18GHz)
0 to 6(at 80 to 1000MHz)
(Floor type absorber )
100(at 150kHz to 1000MHz)
60(at 1GHz to 18GHz)
100(at 14kHz to 10GHz)
Ferrite radio wave absorber
(TFA)
Ferrite radio wave absorber (TFA)
+ Radio wave matching device
(T=35cm)
Ferrite radio wave absorber (TFA)
+ Radio wave matching device
(T=60cm, 1m)
5.0L✕4.0W✕3.1H
1.5W✕2.0H(barrier-free type door is optionally available)
1.0W✕2.0H
1.0W✕2.0H
1.0 to 4.0
5 to 25(3-stage selection, GP-IB control)
1.5
500
1 to 3(3-stage selection, GP-IB control)
ITV system/Interphone
Power supply panel/Filter panel/Insulating transformer/Lighting, etc.
A shortened dipole antenna is used for evaluating the site attenuation characteristic .
6 ANECHOIC CHAMBERS Vol.1
±4(at 30MHz to 18GHz)
ALC-3NH
10.5L✕6.5W✕5.8H
● ALC-3NH
Horizontal polarization
Normalized Site Attenuation
30
3 meters method,Horizontal
Tx:1m / Rx:1 to 4m
BBA9106/UHAPL9108A
20
Center
Front
Rear
Left
Right
10
+3dB
NSA(dB)
–3dB
0
–10
–20
–25
Deviation(dB)
6
4
2
0
–2
–4
–6
30
40
50
70
100
200
300
500
700
1000
Frequency(MHz)
Vertical polarization
Normalized Site Attenuation
30
3 meters method,Vertical
Tx:1m / Rx:1 to 4m
BBA9106/UHAPL9108A
20
Center
Front
Rear
Left
Right
10
+3dB
NSA(dB)
–3dB
0
–10
–20
–25
Deviation(dB)
6
4
2
0
–2
–4
–6
30
40
50
70
100
200
300
500
700
1000
Frequency(MHz)
Site attenuation measuring method
Measurement distance (D) : 3m
D
D
D
D
RIGHT
D
BACK
CENTER
FRONT
LEFT
Transmitting antenna (Turn table)
Receiving antenna
ANECHOIC CHAMBERS Vol.1 7
Small-sized Anechoic Chamber (3m Method)
Features
(Photo by Sony Corporation)
● Exclusively for small-size. Standardized for the purpose of
frequent use of EMI/EMS
● Thin type turntable design (approx. 20 cm) allowing for the
flat floor. Also installable within an existing building (height:
approx. 3.5 m)
● In EMI measurement in EMI specification (ALC-3SL/ALC3S), correlation with actual results is easily obtained as the
earth-reflected wave is utilized, as in the measurement at
open field test site. EMS specifications (ALC-3W) is suitable to comparative measurement using correction values
because of simplified application method.
● Ferrite radio wave absorber (TFA) is used to the frequency
up to 1 GHz. Additional radio wave matching devices are
available for the frequency ranging from 30 MHz to 18 GHz.
● Non-flammable finishing material secures the safety of
high-frequency, high-output immunity tests
Standard Specifications
Type
Main support
Shield inside dimensions (m)
Outside dimensions
(m)
Site attenuation characteristics (dB)
(comparison to a basic open field test site)
Field distribution uniformity characteristic (dB)
(IEC61000-4-3 conforming)
Shield performance
(dB)
(MIL STD-285 conforming)
Power shielding
(dB)
(MIL STD-220A conforming)
Radio wave absorber
Door dimensions
(m)
Antenna holding device Lifting range(m)
Lifting speed(sec/m)
Dimension(m)
Turntable
Load capacity(kg)
Rotating speed(rpm)
Attached facilities
Power supply
8 ANECHOIC CHAMBERS Vol.1
ALC-3SL
ALC-3S
ALC-3W
EMI
EMS
W3.0✕L7.0✕H3.0
W3.3✕L7.3✕H3.5
+/-3 (at 30 to 1000 MHz)
Horizontal: +/-6 (at 30 to 80 MHz)
(including correction values)
+/-4 (at 80 to 1000 MHz)
at 0.5 m from the center
Vertical: +/-4 (at 30 to 1000 MHz)
of the turntable
at 0.50 m from the center
of the turntable
Optional
0 to 6(at 80 to 1000MHz)
0 to 6(at 80 to 1000MHz) (Floor type absorber)
W4.0✕L7.0✕H3.0
W4.3✕L7.3✕H3.5
Horizontal: +/-4 (at 30 to 1000 MHz)
Vertical: +/-4 (at 30 to 1000 MHz)
at 0.5 m from the center
of the turntable
100(at 150kHz to 1000MHz)
100(at 14kHz to 10GHz)
Ferrite radio wave absorber (TFA)
W1.0✕H2.0
1 to 2.2
30(GP-IB control)
1.2
250
1/3(2-stage selection, G-IB control)
ITV system/Interphone
Power supply panel/Filter panel/Insulating transformer/Lighting, etc.
● ALC-3S
Horizontal polarization
60
Distance
Polarization
Tx. Height
Rx. Height
:
:
:
:
:CENTER
:FRONT
:BACK
3m
Horizontal
1m
1-2.2 m
:LEFT
:RIGHT
:Reference
(＋/−6.4dB)
Antenna
60
50
:
:
:
:
:CENTER
:FRONT
:BACK
3m
Horizontal
1m
1-2.2 m
:LEFT
:RIGHT
:Reference
(＋/−4dB)
Antenna
: UHALP9108
( dB )
( dB )
50
40
40
SITE ATTENUATION
SITE ATTENUATION
Distance
Polarization
Tx. Height
Rx. Height
: BBA9106
30
20
10
30
20
10
0
0
30 40
60
80
100
120
140
160 180 200 220
FAEQUENCY ( MHz )
240
260
280
300
300
350
400
450
500
550
600 650 700 750
FAEQUENCY ( MHz )
800
850
900
950
1000
Vertical polarization
60
Distance
Polarization
Tx. Height
Rx. Height
:
:
:
:
:CENTER
:FRONT
:BACK
3m
Vertical
1m
1-2.2 m
:LEFT
:RIGHT
:Reference
(＋/−4dB)
Antenna
60
50
:CENTER
:FRONT
:BACK
3m
Vertical
1m
1-2.2 m
:LEFT
:RIGHT
:Reference
(＋/−4dB)
Antenna
: UHALP9108
( dB )
( dB )
40
SITE ATTENUATION
SITE ATTENUATION
:
:
:
:
50
40
30
20
10
20
0
30 40
60
80
100
120
140
160 180 200 220
FAEQUENCY ( MHz )
240
260
280
Distance
Polarization
Tx. Height
Rx. Height
:
:
:
:
:CENTER
:FRONT
:BACK
3m
Horizontal
1m
1-2.2 m
300
300
● ALC-3SL
Horizontal polarization
60
30
10
0
350
400
450
500
550
600 650 700 750
FAEQUENCY ( MHz )
800
850
900
950
1000
Vertical polarization
:LEFT
:RIGHT
:Reference
(＋/−4dB)
Antenna
: BBA9109
60
50
Distance
Polarization
Tx. Height
Rx. Height
:
:
:
:
:CENTER
:FRONT
:BACK
3m
Vertical
1m
1-2.2 m
:LEFT
:RIGHT
:Reference
(＋/−4dB)
Antenna
: BBA9109
( dB )
( dB )
50
40
40
SITE ATTENUATION
SITE ATTENUATION
Distance
Polarization
Tx. Height
Rx. Height
: BBA9109
30
20
10
30
20
10
0
0
30 40
60
80
100
120
140
160 180 200 220
FAEQUENCY ( MHz )
240
260
280
30 40
300
60
80
100
120
140
160 180 200 220
FAEQUENCY ( MHz )
240
260
280
300
● ALC-3W
Field uniformity
：垂直偏波
：水平偏波
12
12
10
10
DEVTATION (dB)
DEVTATION (dB)
：水平偏波
8
6
8
6
4
4
2
2
0
30 40
：垂直偏波
60
80
100
120
140
160
180
200
FAEQUENCY ( MHz )
220
240
260
280
300
0
300
350
400
450
500
550
600 650 700 750
FAEQUENCY ( MHz )
800
850
900
950 1000
ANECHOIC CHAMBERS Vol.1 9
Anechoic Chamber Outline (3m/10m Method)
Antenna lift
Anechoic
chamber
Controller
Noise filter panel
Measuring
room
Shield door
(standard type)
10 ANECHOIC CHAMBERS Vol.1
(Photo by Oki Engineering Co., Ltd.)
Box for lighting and air-conditioning
opening
(Bulb replacement with a powered lift)
Turntable
Dual type (5m/2m)
Insulating transformer/CVCF
Shield door
(barrier-free type)
(Effective dimensions: W3 x H3m)
ANECHOIC CHAMBERS Vol.1 11
Anechoic Chamber for EMI/Microwave
Anechoic Chamber for Microwave Ranges
Features
● Anechoic chamber for EMI/Microwave (ALC-ME)
● Provided with both characteristics of complete anechoic
chamber which produces an pseudo-free space within the
microwave ranges, and semi-anechoic chamber which
enables EMI measurement (for 3m regulations), as the
radio wave absorber on the floor travels automatically.
● Wide range (30 MHz to 100 GHz) radio wave absorption
is achieved by matching technology of ferrite radio wave
absorber and the pyramid type urethane radio wave
matching device, as well as the design technology of
anechoic chambers.
● GP-IB controlled attached facility allowing for automatic
instrumentation in a short time
(Photo by NEC Corporation)
Floor Rising
(Photo by NEC Corporation)
Floor Traveling
(Photo by NEC Corporation)
EMI measuring
(Photo by NEC Corporation)
● Anechoic chamber for microwave ranges (ALC-MX)
Feature
● Applicable to designs and constructions in various specifications
(Photo by KOKUSAI ELECTRIC CO., LTD.)
12 ANECHOIC CHAMBERS Vol.1
Standard Specifications
Type
(m)
Shield inside dimensions
Quiet Zone
Site attenuation characteristic
(ANSI C63.4 sweep frequency)
Field distribution uniformity characteristic
(IEC61000-4-3 conforming)
Shield performance
(MIL STD-285 conforming)
Power shielding
(MIL STD-220A conforming)
Radio wave absorber
(dB)
(dB)
(dB)
(dB)
Door dimensions (m)
Antenna lift
Turntable
Lifting range (m)
Lifting speed (sec/m)
Dimension (m)
Load capacity (kg)
Rotating speed (rpm)
Attached facilities
Power supply
ALC-ME
ALC-MX
20.0L✕ 10.0W✕ 10.0H
Quiet zone dimension. Diameter: 3 m
Pass length transmission distance: 10 m
0.3 GH to 35 dB and below
1 GHz to 45 dB and below
10 GHz to 50 dB and below
50 GHz to 55 dB and below
EMI measurement for 3m regurations
±3(at 30 t o 1000MHz)
0 t o 6(at 80 t o 1000MHz)
(Floor type radio wave absorber installation)
100(at 150kHz t o 1000MHz)
60(at 1GHz t o 18GHz)
8.0L✕ 4.0W✕ 4.0H
Quiet zone dimension. Diameter: 1 m
Pass length transmission distance: 3.5 m
0.8 GHz to 25 dB and below
1 GHz to 30 dB and below
10 GHz to 40 dB and below
50 GHz to 45 dB and below
100(at 14kHz t o 10GHz)
Optional 100(at 14kHz t o 10GHz)
Optional 60(at 1GHz t o 18GHz)
Ferrite radio wave absorber (TFA) +
Pyramid type urethane radio wave absorber
Pyramid type urethane radio wave matching device
1.0W✕ 2.0H
3.0W✕ 2.0H
1.0W✕ 2.0H
1.0W✕ 2.0H
1.0 t o 4.0
5 t o 25(GP-IB control)
1.5
250
1/3(3-stage selection, GP-IB control)
ITV system/Interphone
Power supply panel/Filter panel/Insulating transformer/Lighting, etc.
Radio wave absorbent box for microwave
Summary
Suitable for the research and development, test, and adjustment of the next generation's wireless communication systems.
Features
Enables good reproducibility as a distance of more than 3 is
secured between a receiver and a transmitter. Available for
adjustment or test of antenna measuring wireless devices.
Application examples for microwave R&D:
● Cellular antennas (surface/ satellite (IMT-2000)) (0.8 to 2.2GHz)
● Stationary satellite communications (GPS) (1.5GHz -/ 5.1GHz - )
● Wireless LAN (2.4GHz - / 5.1GHz - /19.1GHz - )
● Automatic toll collection systems (ETC-electronic toll collection system) (5.6GHz - )
● Satellite broadcasting (BS/ CS) (11.7GHz - )
● Intelligent Transport Systems (ITS) (60GHz)
Product name
Minimum frequency
Longest distance between transmitter/ receiver (m)
Radio wave absorber
Outside dimensions (m)
Shield performance
Shield inside dimensions (m)
Effective dimensions (m)
Openings (mm)
Portability
MWT-Model-800
MWT-Model-1500
MWT-Model-3000
0.8GHz ~
1.125 (3λ at 800MHz)
Pyramid type (TUP-30)
L2.05 × W1.05 × H1.05
60dB and above (at 800Hz)
2.0 × 1.0 × 1.0
1.7 × 0.4 × 0.4
400 × 400, 400 × 400
(Two openings)
1.5GHz~
0.6 (3λ at 1.5GHz)
Pyramid type (TUP-20)
L1.25 × W0.65 × H0.65
60dB and above (at 1.5GHz)
1.2 × 0.6 × 0.6
0.8 × 0.2 × 0.2
600 × 600
(One opening)
Truckles
3.0GHz~
0.3 (3λ at 3GHz)
Pyramid type (TUP-10)
L0.65 × W0.35 × H0.35
40dB and above (at 3.1GHz)
0.6 × 0.3 × 0.3
0.4 × 0.1 × 0.1
420 × 180
(One opening)
ANECHOIC CHAMBERS Vol.1 13
Radio Wave Absorber for Anechoic Chamber
For microwave ranges
TUP
Pyramid type urethane foam radio wave absorber with high
return loss
TUP
For EMI measurement
Applicable to an anechoic chamber designed for the basic measurement such as radiation, propagation and reflection of electromagnetic
waves
Flat surface walkway type coated with radio wave transparent material
is also available.
TFA
Radio wave absorber in tile shape utilizing
magnetic core loss of sintered ferrite body. Simplified anechoic chamber for EMI can be constructed with TFA alone.
TFA
TCW / TDW
Wedge-type ceramic matching device. Applied in combination with TFA.
Completely non-flammable with high performance in withstanding power
TRUW
Hard urethane foam matching device. Applied in combination with TFA.
TUPF
TUPF
TCW/ TDW/ TRUW
TUHA
Pyramid-type matching device of soft urethane foam. Applied in combination with TFA.
Suitable to measurement of ultra-wide band. High return loss is
achieved particularly in the frequency range of 1 GHz and over.
TUA / TUHA
Wedge-type matching device of soft urethane foam. Applied
in combination with TFA.
TUA
Suitable to measurement of ultra wide band. TUHA is a hollow, low-cost type.
* Urethane foam is made from ether, thus free from deterioration by hydrolysis.
Specifications
Product name
TUP
TCW/TDW
Characteristics Broadband, Long stability, Pyramid-type, high absorbency
Applications
Basic material
Basic measurement, Antenna measurement, Anechoic chamber
Urethane foam*4
Temperature (˚C) –40 to +120˚C
Heat resistance (˚C) +120˚C
Frequency/
absorbency*2
Length
Weight *3
TRUW
Withstanding power, Inflammability, Withstanding power, Flame-retardancy,
Long stability, Wedge-type
Long stability, Wedge-type
EMC, Basic measurement, Antenna measurement, Anechoic chamber
Ceramic fiber (plate shape)
Ceramic fiber sheet/ hard urethane
foam composite plate *4
–20 to +50˚C (ferrite composite) *1
+1,000˚C and above (basic material) +1000 (ceramic sheet)/
+120 (hard urethane)
TUP-10
TUP-20
TUP-30
TUP-45
TUP-60
TUP-100 TUP-150
TCW-100
TDW-125
–20dB
2.0GHz
1.0GHz
700MHz
350MHz
250MHz
150MHz
100MHz
30MHz
–20dB
–20dB
30MHz
–22dB
–30dB
3.0GHz
1.5GHz
1.0GHz
700MHz
500MHz
300MHz
200MHz
100MHz
–25dB
–28dB
100MHz
–25dB
–40dB
4.0GHz
2.0GHz
1.5GHz
1.2GHz
1.0GHz
500MHz
350MHz
300MHz
–25dB
–30dB
300MHz
–30dB
–
10cm
20cm
30cm
45cm
60cm
100cm
150cm
–
100cm
125cm
–
150cm
–
0.7kg
1.2kg
1.7kg
2.5kg
3.0kg
4.6kg
7.0kg
–
2.4kg
2.9kg
–
1.1kg
TRUW-150
*1 Temperature of ferrite tile characteristic. *2 Major characteristics (from separate specifications) *3 Except ferrite tiles (from separate specifications)
*4 Free from deterioration by hydrolysis as it is ethereous.
14 ANECHOIC CHAMBERS Vol.1
Radio Wave Absorber for Microwave
Applicable to characteristic improvement of antenna for microwave band, reduction of radar sections and measures against various radio wave failures.
UW
Radio wave absorber of urethane foam in
surface wave form.
Applicable to an anechoic chamber for microwave
band.
UF
Three-layered radio wave absorber of urethane foam
Return loss is acquired by changing the dielectric
loss of each layer.
UW
UF
UF-W
RS
UF-W
A radio wave absorber with excellent weatherability. The UF is covered by the FRP sheet.
FRPs on the radio wave receiving side are superior
in mechanical strength and radio wave reflection
characteristics. Products are available in various
shapes.
RS
Resonance radio wave absorber with rubber sheet
Excellent weatherability supported by various cases
of outdoor use Special adhesion process is required to sustain the performance and to prevent the
detachment during long-term service.
Product name
UW
UF
Characteristics
Waveform
Urethane-flat, Low cost
urethane foam,
High absorbency,
Broadband
Applications
Microwave anechoic chamber,
Improvement of antenna
performance, various
improvement of antenna performance,
various measures against jamming measures against jamming
Basic material
Urethane foam
Urethane foam
Basic form
60cm waveform
60cm flat sheet
Temperature
–40 to +120˚C
–40 to +120˚C
1kg/cm2
1kg/cm2
Tensile strength
UW-5
UW-7.5 UW-10
UF-30
UF-60
UF-120
Frequency/
4GHz to / 3GHz to / 2.5GHz to / 2GHz to / 1GHz to / 0.5GHz to /
absorbency
Thickness
Weight
–20dB
5cm
0.6kg
–20dB
7.5cm
0.9kg
–20dB
10cm
1.2kg
–20dB
3cm
0.3kg
–20dB
6cm
0.7kg
–20dB
12cm
1.3kg
UF-W
RS
Urethane-flat,
FRP covering,
High weatherability/
durability
Improvement of antenna
performance, various
measures against jamming
Urethane foam
60cm flat sheet
–40 to +120˚C
10kg/cm2
Rubber sheet,
High weatherability/ durability
Improvement of antenna performance,
various measures against jamming
OUF-30 OUF-60 OUF-120
RS-3
2GHz to / 1GHz to / 0.5GHz to / 3±0.1GHz/
–20dB
–20dB
–20dB
–20db
3.1cm
6.1cm
12.1cm 0.59cm
0.4kg
0.8kg
1.5kg
1.3kg
Chloroprene rubber
30cm flat sheet
–35 to +130˚C
90kg/cm2
RS-5
5.6±0.1GHz/
–20db
0.41cm
1.0kg
RS-9
RS-406 RS-508 RS-813
9.4±0.1GHz/ 4 to 6GHz/ 5 to 8GHz/ 8 to 13GHz/
–20db
–20db
–20db
–20db
0.23cm
0.9cm
0.7cm
0.5cm
0.56kg
1.4kg
1.1kg
0.7kg
ANECHOIC CHAMBERS Vol.1 15
Comparison between Types and Places of EMC Measurement and Test
Dark room to
electromagnetic
waves
Electromagnetic Interference (EMI)
Open site
Shield room
General
environment
Conducted emittions
Radiated emittions (electric field)
Radiated emittions (magnetic field)
Power emittions
Harmonic current emittions
Voltage fluctuations and flicker
Electromagnetic Susceptibility (EMS)
Electrostatic discharge immunity test
Radiated radio frequency electromagnetic field immunity test
Electrical fast transient/burst immunity test
Surge immunity test
Immunity to conducted disturbances test
Power frequency magnetic field immunity test
Voltage dips, short interruptions and voltege variations immunity test
Electromagnetic Susceptibility (Immunity)
Electrostatic discharge immunity test
: Test on resistance against electrostatic discharge caused by contact of human
body with the electrical appliance or its periphery (IEC 61000-4-2, etc.)
: Test on resistance against communication signal wave for the electrical
Radiated radio frequency
electromagnetic field immunity appliance or electromagnetic wave radiated from other electrical appliances
(IEC 61000-4-3, etc.)
test
Electrical fast transient/burst
immunity test
: Test on resistance against noise conducted to the electrical appliance through
its power or signal cable (IEC 61000-4-4, etc.)
Surge immunity test
: Test on resistance against lightning surge conducted to the electrical appliance
through its power or signal cable (IEC 61000-4-5, etc.)
Immunity to conducted disturbances test
: Test on resistance against radio frequency conducted to the electrical appliance
through its power or signal cable (IEC 61000-4-6, etc.)
Power frequency magnetic field : Test on resistance of the electrical appliance against magnetic field caused by
normal commercial frequency at 50 or 60 Hz (IEC 61000-4-8, etc.)
immunity test
Voltage dips, short interruptions and : Test on resistance of the electrical appliance against fluctuation of supply
voltage (IEC 61000-4-11, etc.)
voltege variations immunity test
16 ANECHOIC CHAMBERS Vol.1
Electromagnetic Interference (Emittion Noise)
Conducted emittions
: Electromagnetic noise conducted and emitted from the power cable of
an electrical appliance (FCC/VCCI/CISPR)
Radiated emittions (electric
field)
: Electromagnetic noise radiated from an electrical appliance (FCC/
VCCI/CISPR)
Radiated emittions (magnetic
field)
: Electromagnetic noise radiated from an electrical appliance (Electrical
Appliance and Material Control Law/CISPR)
Power emittions
: Electromagnetic noise radiated from the power or communication cable
of an electrical appliance (Electrical Appliance and Material Control
Law/CISPR/EN)
Harmonic current emittions
: Checking higher harmonics conducted from the power cable of an
electrical appliance (IEC/EN)
Voltage fluctuations and flicker : Checking fluctuation of power supply voltage by current conduction to
an electrical appliance (IEC/EN)
Limits of Electromagnetic Interference
• Radiated Emissions
• Conducted Emissions
VCCI/CISPR22/EN55022
VCCI/CISPR22/EN55022
80
100
70
80
60
Class A Q.P
Class A 3m (VCCI)
dB
dB
50
Class A 10m / Class B 3m (VCCI)
Class A A.V
60
40
Class B Q.P
Class B 10m
Class B A.V
30
40
20
20
10
10
100
MHz
0.1
1000
FCC
1
MHz
10
100
10
100
FCC
80
100
70
80
60
Class B 3m
Class A
50
dB
dB
Class A 10m
60
40
Class B
30
40
20
20
10
10
100
1000
MHz
10000
100000
0.1
1
MHz
ANECHOIC CHAMBERS Vol.1 17
International Business Headquarters
5-8, Kita-Aoyama 2-chome, Minato-ku, Tokyo 107-8620, Japan
Phone:81-3-3402-6179 Fax:81-3-3402-6172
Seoul Branch
#512-1, Korea City Air Terminal Bldg., 159-6, Samsung-Dong, Kangnam-ku, Seoul, Korea
Phone:82-2-551-3651 Fax:82-2-551-3650
NEC TOKIN America Inc. (Headquarters & Western Area Sales)
32950 Alvarado-Niles Road, Suite 500, Union City, California 94587, U.S.A.
Phone:1-510-324-4110 Fax:1-510-324-1762
Eastern Area Sales Office (Chicago Office)
9820 Capitol Drive, Wheeling, Illinois 60090, U.S.A.
Phone:1-847-215-8802 Fax:1-847-215-8804
Southwest Regional Sales (San Diego Office)
2945 Harding Street, Suite 211, Carlsbad, California 92008, U.S.A.
Phone:1-760-434-5044 Fax:1-760-434-5045
Southeast Regional Sales (Tampa Office)
5440 Mariner Street, Suite 207, Tampa, Florida 33609, U.S.A.
Phone:1-813-281-1183 Fax:1-813-281-2544
NEC TOKIN Hong Kong Ltd.
Level 3, Suite 301, Festival Walk, 80 Tat Chee Avenue, Kowloon Tong, Kowloon,
Hong Kong
Phone:852-2730-0028 Fax:852-2375-2508
NEC TOKIN Shanghai Co., Ltd.
Room 1508, Rui Jin Bldg., 205 Mao Ming Road (South), Shanghai 200020, P.R.China
Phone:86-21-6415-0602 Fax:86-21-6472-6655
NEC TOKIN Shenzhen Co., Ltd.
Room 512-515, Office Tower, Shin Hing Square, Di Wang Commercial Centre, Shenzhen,
P.R.China
Phone:86-755-246-5011 Fax:86-755-588-2680
NEC TOKIN Singapore Pte. Ltd.
180 Cecil Street, #14-01/04 Bangkok Bank Building, Singapore 069546
Phone:65-6223-7076 Fax:65-6223-6093
Malaysia Branch
Unit B-07-12, Block B, Plaza Mont’ Kiara, 2, Jalan 1/ 70C, 50480 Kuala Lumpur, Malaysia
Phone:60-3-6201-0702 Fax:60-3-6201-0712
Bangkok Representative Office
No.1308, B.B.Bldg., 54 Asoke Road, Sukhumvit 21, Bangkok 10110, Thailand
Phone:66-2-260-7017 Fax:66-2-260-7016
NEC TOKIN Taiwan Co., Ltd.
4FL., No.9, Lane 3, Minsheng W. Road, Jungshan Chiu, Taipei 104, Taiwan, R.O.C.
Phone:886-2-2521-3998 Fax:886-2-2521-3993
NEC TOKIN Europe GmbH
Hellersbergstrasse. 14, 41460 Neuss, Germany
Phone:49-2131-1866-0 Fax:49-2131-1866-18
UK Branch
ECC Berkshire House, 252-256 Kings Road, Reading, Berkshire, RG1 4HP, U.K
Phone:44-(0)-118-953-3722/3723 Fax:44-(0)-118-953-3724
©2002 NEC TOKIN Corporation
For inquiry, Please call Sales Promotion Department (Japan)
Phone: 81-3-3402-6179 Fax: 81-3-3402-6172
• The names of the products and the specifications in this catalog are subject to change without notice for the sake of improvement. The manufacturer also reserves the right to discontinue any of
these products. At the time of delivery, please ask for specifications sheets to check the contents before use.
• Descriptions in this catalog regarding product characteris-tics and quality are based solely on discrete components. When using these components, be sure to check the specifications with the
component in question mounted on the products.
• The manufacturer’s warranty will not cover any disadvan-tage or damage caused by improper use of the products that deviates from the characteristics, specifications, or conditions for use
described in this catalog.
Precautions
• The products in this catalog are intended for use in ordinary electronic products. If any of these products are to be used in special applications requiring extremely high reliability, where product
defects might pose a safety risk, please consult your TOKIN sales representatives.
• Though the manufacturer has taken all possible precau-tions to ensure the quality and reliability of its products, improper use of products may result in bodily injury, fire, or similar accident. If you
have any questions regarding the use of the products in question, please consult your TOKIN sales representatives.
• Please be advised that the manufacturer accepts no responsibility for any infraction by users of the manufacturer’s products on third party patents or indus-trial copyrights. The manufacturer is
responsible only when such infractions are attributable to the structural design of the product and its manufacturing process.
• Should any of these products be considered as strategic goods, and thereby governed by foreign exchange or foreign trade regulations, the Government of Japan will require an export license
before said products can be exported outside Japan.
• This catalog is current as of July 2002.
http://www.nec-tokin.com
0000000000000000
Mar.
25,5,2002
0001NTAC14VOL01E
April
200200000
H7HP1
Printed
PrintedininJapan
Japan