MICRONIX

Electromagnetic wave emission pattern measurement system MRP770

  • 写真:Electromagnetic wave emission pattern measurement system MRP770

    Spectrum Analyzer MSA300 Series download

    • We provide inexpensive electromagnetic wave emission pattern measurement system which space-saving and installation work not necessary.
    • Ideal for developing small wireless devices, information communication devices, and antennas.

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

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

  • 写真: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

  • 写真: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

  • 写真: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.

設定画面
  • 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.

測定画面
  • 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.

*MICRONIX Corporation reserves the right to make changes in design, specification and other information without prior notice.

Calibration example of the EIRP

  1. Antennas with known gains measure in the boresight direction.
    Pt[dBm] Effective radiated power (ERP)
    Gt[dB] Antenna gain
    Pt eirp[dBmeirp] Equivalent isotropically radiated
    power Pt [dBm] + Gt [dB]
    Pr[dBm] Received power of RF connector part of Electromagnetic anechoic box through receiving antenna + coaxial cable
  2. Find the degree of antenna coupling.
    K[dB] Pt eirp[dBmeirp]-Pr[dBm]
  3. Can be measured radiation electricity of measured device (EUT) in reception system same as calibration.
    P eirp[dBmeirp] Pread[dBm]+K[dB]

電波案箱

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

Product Name Model Quantity
Electromagnetic anechoic box (Built-in Electric turn table) MY5630ET 1
Shield sheet (Maintenance door side) MY5630-03 1
Wooden base MY5630-04 1
Double Ridge Horn Antenna Set (1 to 18GHz) MY5630-01 1
Spectrum analyzer MSA558 1
USB Cable MI400 1
Coaxial cable (0.5m, Receiving antenna to Electromagnetic anechoic box) MC201 1
Coaxial cable (4m, Electromagnetic anechoic box to Spectrum analyzer) MC203 1
Conversion adapter MA306 1
PC software MAS250 1
PC for Measurement   1
Serial/USB cable   1
Calibration Kit    
SI costs (comprehensive testing, coupling measurement, etc.)    
Carry-in costs (transportation, carry-in, installation, etc.)    

Option (Example of anechoic box MY5630ET)

Doubleridge horn antenna set

Model MY5630-01
Type Doubleridge horn 
Frequency 1 to 18GHz
Connectors SMA(J)
Other One set of fixing jig(*1)
Features
  • Small antenna suitable for broadband measurement with sharp directivity.
  • Mounted on a fixed base, and receive and measure in horizontal / vertical plane using rotating mechanism.
  • Antenna evaluation such as mobile phone, wireless LAN terminal, base station.

Log periodic antenna set

Model MY5630-02
Type Log periodic dipole array
Frequency 700MHz to 6GHz
Connectors SMA(J)
Other One set of fixing jig(*1)
Features
  • Correspond to high gain, wide bandwidth and high power output.
  • Mounted on a fixed base, receive in horizontal / vertical plane using rotating mechanism and then measure.
  • Combined with SG and high-frequency amplifier, enable to evaluate radiation immunity.
  • It is possible to evaluate receiving characteristics of base station and 4K broadcasting equipment.

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

Shield sheet (Maintenance door side)

Model MY5630-03
Features
  • Same as shield sheet equipped on the front of main body.
  • Set on the maintenance door side.
  • For drawing IF and coaxial, optical fiber and special cable.

木製台

Model MY5630-04
Features
  • Attach around the turntable and prevent interference of cables during rotation.
  • Since DUT can be placed once on wooden base between door and turntable, the burden of installation is reduced. The surface of wooden base is 5mm lower than the surface of turntable.

Library

*Please contact us for details and combination of the system.
*MICRONIX Corporation reserves the right to make a change in design, specification and other information without prior notice.

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