The electromagnetic radiation pattern measurement system (MRP770) is a system for measuring the radiation pattern of small wireless devices, information communication devices, antennas, etc.
With the rapid progress of IoT, wireless modules are installed in various terminals, and it is becoming more important to understand the antenna performance. This system is a material that introduces an example.

System diagram

Measuring instrument

• Spectrum analyzer
  Measure the signal that is actively radiated from the EUT.
  It is mainly used for measuring wireless modules.
• Network analyzer
  Input a signal to the EUT and measure the signal radiated from the antenna.
  Mainly used to measure passive sources such as antennas.
• Signal generator
  Input a signal to the EUT and measure the signal radiated from the antenna with a spectrum analyzer.
  Mainly used to measure passive sources such as antennas.

*Please contact us for compatible models.

Electromagnetic anechoic box

MY5630ET

A large anechoic box with excellent versatility, mainly for the sub-GHz to millimeter wave band.

Outside Dimensions (approx.)	2504(W)×1922(H)×1704(D)mm *excluding projections
Inside Dimensions (approx.)	2010(W)×1140(H)×1210(D)mm
Weight (approx.)	765kg
Radio wave absorber	Pyramidal absorber 8 inch
Reflection loss	30dB@1GHz 40dB@3GHz 50dB@5GHz *typ.
Shielding characteristics	more than 80dB@1 to 6GHz *typ. (when using shield sheet more than 60dB)
Front door	900(W)×1150(H)mm
Maintenance door	675(W)×675(H)mm
Turn table	φ500mm/30kg in load Uniform static load@center of table Structure POM(White)
Air intake and exhaust tube	Included
Interface	USB, LAN ×each 2pcs Power supply(AC or DC) , D-sub25, D-sub9, Shield sheet×each 1pc SMA(J)×5(left side×3, right side×2)

MY5310SU-UP

A horizontally long anechoic box mainly for the 2 GHz band to the millimeter wave band (5G).
Three-part structure.

Outside Dimensions (approx.)	1963(W)×1323(H)×1140(D)mm *excluding projections
Inside Dimensions (approx.)	1710(W)×775(H)×775(D)mm
Weight (approx.)	500kg
Radio wave absorber	Pyramidal absorber 4 inch
Reflection loss	20dB@1GHz 30dB@3GHz 40dB@5GHz *typ.
Shielding characteristics	more than 65dB@1 to 6GHz *typ
Front door	516(W)×926(H)mm *same for both sides
Turn table	φ500mm/30kg in load Uniform static load @center of table Structure Metal
Air intake and exhaust tube	Not included
Interface	AC outlet, DC power terminal block(3P), LAN D-sub25×each 1pc N(J)×2(left/right side ×each 1pc)

MY5310S-UP

A space-saving anechoic box mainly for the 2.4 GHz to 5 GHz band.
Two-part structure.

Outside Dimensions (approx.)	1345(W)×1323(H)×1140(D)mm *excluding projections
Inside Dimensions (approx.)	1107(W)×775(H)×775(D)mm
Weight (approx.)	350kg
Radio wave absorber	Pyramidal absorber 4 inch
Reflection loss	20dB@1GHz 30dB@3GHz 40dB@5GHz *typ.
Shielding characteristics	more than 65dB@1 to 6GHz *typ
Front door	516(W)×926(H)mm
Turn table	φ220mm/10kg in load Uniform static load @center of table Structure acrylic
Air intake and exhaust tube	Not included
Interface	AC outlet, LAN ×each 1pc USB×2 SMA(J)×8(left/right side ×each4)

PC software　MAS250

PC software for automatically measuring the radiation pattern of horizontal or vertical polarization.

Setting screen

Set the spectrum analyzer, network analyzer, and electric turntable. You can also save and read the set values.

• Vertical axis
  Set the reference level and display scale.
• Horizontal axis
  Set the measurement point, center frequency, and frequency span.
• Measurement function
  Set the averaging count.
• Marker
  You can specify a maximum of 5 points for the marker within the set frequency span range.
• Turntable
  • Specify the measurement start position and end position in steps of 1 degree.
  • The rotation step interval is at least 1 degree.
  • Set the waiting time in ms unit until the angle to be measured is reached and the spectrum analyzer measurement is started.
  • Set the measurement direction to either one-way (CCW) or round-trip (CCW+CW).

Measurement screen

Turn the turntable to the specified angle and perform sweep measurement with the spectrum analyzer. Automatically plot the signal level at the specified frequency on the polar graph.

• Horizontal polarization and vertical polarization are measured separately, and the measurement results are displayed on the same GUI.
• Displays the measured, maximum, and average values for both horizontal and vertical polarization.
• Measurement data can be output as a CSV file.
• The unit of measurement of the polar coordinate graph can be switched between absolute value display (dBm) and relative value display (dB). The relative value display is based on the maximum measured value.

Calibration example of the EIRP

Antennas with known gains measure in the boresight direction.

Find the degree of antenna coupling.

an be measured radiation electricity of measured device (EUT) in reception system same as calibration.

System configuration (Example of wireless module measurement from 1GHz to 8.5GHz)

Option (Example of anechoic box MY5630ET)

Doubleridge horn antenna set

Log periodic antenna set

(*1)Include connecting cables and connectors inside shield box.

Shield sheet (Maintenance door side)

Wooden stand

Library

Products Catalog

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If you want to verify 5G, customize a radio wave shield box, or need product repair, please do not hesitate to contact us about any small matter.

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