Electromagnetic Anechoic Box Application Notes

Electromagnetic Anechoic Box Application Notes
C &U
CREATIVE
& UNIQUE
Electromagnetic Anechoic Box
(shielding box)
ME8661B
Produced by a specialist
in test & measurements.
MY5410
MY5220
MY5310
MICRONIX CORPORATION
Products line-up
■ ME8661A
Varsatile type applicable to every test.
・Wireless system test for technical standard.
Applications
・Receiving sensitivity test
■ ME8661B
Lare shild box covering even UHF band.
Applications
・Antenna characteristics measurement
Shilding
characteristics
≧[email protected]
Reflection loss
≧[email protected]
・Wireless system test for technical standard.
・Receiving sensitivity test
・Antenna characteristics measurement
Shilding
characteristics
≧[email protected]z
830(W)×608(H)×503(D)mm (excluding projection)
Reflection loss
≧[email protected]~
Outside dimensions
Outside dimensions
1500(W)×1100(H)×900(D)mm (excluding projection)
Inside dimensions
700(W)×380(H)×380(D)mm
Structure
Triple structure composed of radio wave absorber,
copper plate and aluminium plate.
Inside dimensions
Structure
1200(W)×600(H)×600(D)mm
Triple structure composed of radio wave absorber,
copper plate and aluminium plate.
SMA (3pcs) (reference side 1pc, receiving side 2pc)
25-pins D-sub connector(1pc)
Connectors
Weight
approx.38kg(excluding antenna)
Option
・Turn table
・Caster
■ ME8662N/ ME8662E
Available for demonstration use because of being
portable.
・Wireless system inspection for compact equipments.
・Demo of wireless communication equipments.
Applications
Connectors
Weight
Option
Outside dimensions
360(W)×166(H)×340(D)mm(exclude handle and projection)
Inside dimensions
TypeN 354(W)×129(H)×334(D)mm
TypeE 293(W)×98.5(H)×273(D)mm
Structure
Triple structure composed of radio wave absorber,
copper plate and aluminum plate.
Connectors
SMA(2pcs)
9pins D-sub connector(1pc)
Weight
TypeN approx.6.7kg
TypeE approx.7.5kg
approx.176kg
・Caster
■ ME8668
With an automatic conveyer suited for mass production line.
Applications
TypeN
Shilding
characteristics TypeE
Reflection lossTypeE
SMA (3pcs) (reference side 1pc, receiving side 2pc)
25-pins D-sub connector(1pc)
・Mass production line
・Wireless system test for technical standard.
・Receiving sensitivity test.
・Antenna characteristics measurement
Shilding
characteristics
≧[email protected]
Reflection loss
≧[email protected]
Outside dimensions
Inside dimensions
922(W)×731(H)×731(D)mm (excluding automatic conveyer)
790(W)×605(H)×605(D)mm
Structure
Double structure composed of radio wave absorber
and stainless steel.
Connectors
SMA (2pcs), Available for D-sub and etc.
Weight
approx. 94kg (including conveyer)
Automatic conveyer
Dimensions
Test device
634(W)×436(H)×260(D)mm
110(W)×150(H)×150(D)mm 2kg load
Capable of changing DUT mounting pant in coneyer.
■ ME8669
Available for measurement at low frequency with ferrite
absorber.
■ MY5220
Newest type of anechoic box with high shield characteristics.
Applications
・Wireless system test for technical standard.
・Receiving sensitivity test
・Antenna characteristics measurement
Applications
・Mass production line
・Shield box
・Antenna characteristicsmeasurement
Shilding
characteristics
≧[email protected]
Shilding
characteristics
≧[email protected]
Reflection loss
Outside dimensions
Inside dimensions
Structure
≧[email protected] to 800MHz
915(W)×580(H)×585(D)mm (excluding projection )
810(W)×506(H)×506(D)mm
Triple structure composed of radio wave absorber,
copper plate and aluminium plate.
Connectors
SMA (2pcs)
25-pins D-sub connector(1pc)
approx.205kg
Weight
■ MY5310
Optimum for EMI test because equipped with turntable
for small EUT.
Reflection loss
Outside dimensions
Jig mount Dimensions
Inside dimensions
Structure
≧[email protected]
456(W)×416(H)×416(D)mm (exclude handle and projection)
350(W)×16(H)×300(D)mm
390(W)×340(H)×340(D)mm
Double structure composed of radio wave absorber and
Connectors
Weight
Option
SMA(3pcs)
approx.25kg
Connector box (( LAN connector(3pcs), USB(1pc),
9 pins D-sub connector (1pc), AC power 1pc (with power cable)
■ MY5410
Optimum for EMI test because equipped with turntable for
large EUT.
Applications
・EMI test
・Wireless system test for technical standard.
・Antenna characteristics measur
ement
Applications
Shilding
characteristics
≧65dB typ
Shilding
characteristics
・EMI test
・Wireless system test for technical standard.
・Antenna characteristics measurement
≧65dB typ
Reflection loss
Outside dimensions
Inside dimensions
Structure
≧[email protected] to 2.2GHz
1340(W)×1210(H)×1030(D)mm (excluding casters and projections)
1230(W)×920(H)×920(D)mm
Double structure composed of radio wave absorber and
stainless steel.
Reflection loss
Outside dimensions
Inside dimensions
Structure
≧[email protected] to 2
2364(W)×1902(H)×1424(D)mm (excluding projection)
2170(W)×1450(H)×1230(D)mm
Double structure composed of radio wave absorber and
stainless steel.
Connectors
N(J)@antenna out
Connectors
N(J)@antenna out
Weight
Option
N(J)@for EUT
25-pins D-sub connector(1pc)
approx.460kg
Broadband antenna
Weight
Option
N(J)@for EUT
approx.1000kg
Broadband antenna
Application
■ Fatures and utulity of electromagnetic anechoic box
The electromagnetic anechoic box has the features described below and makes the precise measurement of DUT
characteristics.
1. The electromagnetic anechoic box provides the circumstances isolated from the outside electromagnetic field.
2. The electromagnetic anechoic box minimizes the leakage of the DUT's electromagnetic wave to the outside.
3. The electromagnetic anechoic box minimizes the radio wave interference in the box.
■ Main application
1. Transmission characteristics test of wireless equipment
The receiving antenna installed at the opposite side of DUT receives the radio wave radiated from DUT,
which is put on an acrylic resin table, and then the receiving signal is analyzed by Spectrum analyzer MSA338
so that the transmission characteristics of the wireless equipment can be evaluated.
● Spectrum analyzer MSA338
blocked
● Electromagnetic anechoic box
・Frequency
・Channel power
・Occupied frequency bandwidth
・Adiacent channel power
・Strength of spurious radiation
・Leakage power at carrier off
Radio wave absorber
absorbed
Receiving antenna
Receving antenna terminal
EUT
* Frequency measurement is performed
by frequency counter option
(resolutioon 100Hz) of MSA338.
LNA
Mode setting
Power supply
absorbed
Low noise
acrylic resin table
blocked
2. Receiving sensitivity test of wireless equipment
Such a pseudo signal as PN15 is radiated from the transmission antenna through the programmable
attenuator MAT800. The DUT receives this signal and outputs the base band signal to BER
measuring instrument. The receiving sensitivity is precisely measured according to BER value set.
blocked
●Signal generator (modulation signal)
Receving antenna terminal
● Prpgramable attenuator
MAT800
● Electromagnetic anechoic box
blocked
Radio wave absorber
Transmission
antenna
Pseudo signa
(ex.) PN15l
EUT
acrylic resin table
・Receiving sensitivity measurement
●BER (bit error rate) measuring instrument
absorbed
Mode setting
Power supply
3. Antenna characteristics measurment
The antenna characteristics is analyzed by the method that the antenna to be measured receives the radio wave radiated
by the transmission antenna and then Spectrum analyzer MSA338 measures this receiving signal.
● Spectrum analyzer MSA338
blocked
● Electromagnetic anechoic box
Radio wave absorber
Attenuator
Antenna to be
measured ●
absorbed
ME8661A
blocked
Transmission
antenna
absorbed
● Signal generator
4. EMC precompliance test
4.1 Radiated emission measurement
The radiated emission from DUT is measured by Spectrum analyzer MSA338 (remodeling) after received b the receiving antenna.
● Spectrum analyzer MSA338 (remodeling)
Radio wave absorber
absorbed
Receving antenna
EUT
LNA
Low noise amp
blocked
● Electromagnetic anechoic box
Radiated emission
measurement
acrvlic resin
blocked
absorbed
4.2 Conducted emission measurement
The conducted emission from DUT to the power cable is measured through LISN by Spectrum analyzer MSA338 (remodeling).
● Spectrum analyzer MSA338 (remodeling)
blocked
● Electromagnetic anechoic box
Radio wave absorber
Power cable
EUT
Conducted emisson
measurement
LNA
Low noise amp
limiter
AC power supply
acrvlic resin table
LISN
* LISN : Line impedance stabilization network
blocked
Options
■ Antenna
Spiral antenna
Dipole antenna
M301
M302
Model
Frequency range : 2GHz∼18GHz
Antenna gain
: -2.0dBi∼+6.0dBi
Spiral antenna
Frequency range : 2GHz∼5GHz
Antenna gain
: +12.5dBi∼+17.0dBi
M303
M304
M306
M305
Frequency range
Antenna gain
M301
0.8 to 1GHz
M302
1.25 to 1.65GHz
>1dBi
>1dBi
M303
1.7 to 2.2GHz
>1dBi
M304
2.25 to 2.65GHz
>1dBi
M305
390 to 410MHz
>1dBi
M306
4.7 to 602GHz
>1dBi
■ Antenna
size φ200mm
weight approx. 3kg
rotation angle
360deg
rotation step
10deg
※This option is mounted on ME8661A/ME8669.
Spiral antenna
■ Accessory
・Microwave coaxial cable
0.5m
3m
4m
・Fixed microwave attenuators
(1~10,12,13,15,20dB)
・50ohm termination(SMA)
・Coaxial adapter
BNC(P)/BNC(J)
BNC(P)/N(J)
BNC(P)/N(P)
Frequency range : 0.75GHz∼2GHz
Antenna gain
: +5.0dBi∼+10.0dBi
*Referrence antenna Contain antenna gain
and RF coupling degree data
BNC(P)/F(J)
BNC(P)/F(P)
Radio wave absorber
■ Type of absorber
Model
Absorber
ME866A
polyurethane absorber
①
≧[email protected]∼
Absorber correspond all polarized wave.
ME8662E
ME8668B
MY5220
polyurethane absorber
②
≧[email protected]∼
Absorber correspond all polarized wave.
ME8661B
polyurethane absorber
③
≧[email protected]∼
Absorber correspond all polarized wave.
ME8669
ferrite absorber
①
≧20dB
@50MHz∼800MHz
Available for measurement at low frequency.
ferrite absorber
②
≧20dB
@50MHz∼430MHz
Available for measurement at low frequency.
ME8668
MY5310
MY5410
Reflection loss
Features
Utility
・Wireless LAN
・Bluetooth
・Cellular phone
・Wireless LAN
・GPS
・ETC
・RF-ID tag
・Cellular Phone
・Keyless Entry
・RF-ID tag
・Medical system
・RF-ID tag
・Other
Frequency band 30MHz to 400MHz
■ Electrical characterristic
Urethane absorber
Characterristic data
Reflection
loss (dB)
(This value is
compared with
metal plate and
the unit is dB.)
Frequency (GHz)
①Characterristic data
Ferrite absorber
①Characterristic data
Reflection
loss (dB)
(This value is
compared with
metal plate and
the unit is dB.)
Frequency (MHz)
Equipment Under Test
Electromagnetic anechic box is used to test, measure and check in multi-derectrional field.
■ Wireless LAN
■ Cellular phone
Wireless LAN
Frequency band 2.4GHz/5.1GHz
Frequency band 800MHz/900MHz/1.8GHz/2.2GHz
■ Satellite broadcasting
■ Electronic toll collection system (ETC)
Second antenna
Roadside
indictora
ETC equipped car
BS/CS receive
antenna
First
anennat
Stat
Control
Digital
TV
Vehicle detector
BS/CS tuner
Frequency band 5.8GHz
Frequency band 11.7GHz
■ Keless entryy
■ Global positioning system
Public network
Frequency band 300MHz to 500MHz
Frequency band 1.5GHz/5.1GHz
■ Radio frequency identification (RFID)
■ Medical system
Monitor
Nursestation
Basest ation
receiver
Treminal
transmitter
Bedside
Patient
Monitor
Frequency band UHF(950MHz)/2.4GHz
Frequency band 420MHz to 450MHz
2987-2, KOBIKI-CHO,HACHIOJO-SHI, TOKYO 193-0934 JAPAN
TEL. +81-42-637-3667 FAX. +81-42-637-0227
URL:http://www.micronix-jp.com/ E-mail:[email protected]
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