Table Of Contents

mmWave OTA Validation Test Reference Architecture Datasheet

Version:
    Last Modified: October 31, 2019

    Definitions

    Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty. Warranted specifications account for measurement uncertainties, temperature drift, and aging. Warranted specifications are ensured by design or verified during production and calibration.

    Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

    • Typical specifications describe the performance met by a majority of models.
    • Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.
    • Measured specifications describe the measured performance of a representative model.

    Specifications are Measured unless otherwise noted.

    Conditions

    Specifications are valid under the following conditions unless otherwise noted:

    • 30 minutes warm-up time
    • Hardware is within its 1-year calibration interval
    • Hardware temperature is within ±5 °C of the last self-calibration temperature

    mmWave OTA Validation Anechoic Chamber

    Physical Characteristics

    Dimensions (L × W × H)

    Exterior, including handles

    782 mm × 970 mm × 1,200 mm (30.78 in. × 38.18 in. × 47.24 in.)

    Interior

    589 mm × 825 mm × 969 mm (23.18 in. × 32.48 in. × 38.14 in.)

    Crate

    906 mm × 1,130 mm ×1,530 mm (35.7 in. × 44.4 in. × 60.3 in.)

    Weight

    Net

    235 kg (518 lbs)

    Gross

    383 kg (844 lbs)

    Vent clearance, left and right side

    115 mm (4.52 in.)

    RF Isolation

    Shielding effectiveness

    800 MHz to 8 GHz

    >70 dB

    8 GHz to 44 GHz

    >60 dB

    Absorber Performance

    Reflectivity

    -30 dB

    I/O

    Top Bulkhead

    1A through 4A

    Number of ports

    4

    Connectors

    2.4 mm (female)

    Maximum input power

    +30 dBm

    1B through 4B

    Number of ports

    4

    Connectors

    2.92 mm (female)

    Maximum input power

    +30 dBm

    Rear Bulkhead

    1A through 2A

    Number of ports

    2

    Connectors

    2.4 mm (female)

    Maximum input power

    +30 dBm

    1B through 2B

    Number of ports

    2

    Connectors

    2.92 mm (female)

    Maximum input power

    +30 dBm

    DC RF filter

    Number of ports

    8

    Connector

    5.08 mm

    Maximum voltage

    24 VDC

    Maximum current

    4 A

    USB

    Type

    USB 3.0 filter, type A (male)

    Thermocouple

    Number of ports

    2

    Type

    T

    Side Control Panel

    Network port

    Standard

    IEEE 802.3 Ethernet, 10BASE-T, 100BASETX, 1000BASE-T

    Interface

    RJ45

    Speed

    10 Mbps, 100 Mbps, 1000 Mbps

    USB

    Type

    USB 2.0, Hi-Speed

    Speed

    480 Mbit/s

    Maximum current

    1 A

    VGA

    Maximum resolution

    1920 × 1200 at 60 Hz

    Environmental Characteristics

    Temperature

    Operating

    0 °C to 40 °C

    Storage

    0 °C to 50 °C

    Relative humidity range

    Operating

    30% to 70%, noncondensing

    Power Requirements

    Maximum power consumption

    250 W

    Input voltage range

    100 VAC to 220 VAC, (50/60 Hz)

    Output voltage range

    100 VAC to 220 VAC, (50/60 Hz)

    Output power range

    0 A to 3 A

    Laser Characteristics

    Wavelength

    635 nm

    Output power

    <1 mW

    Positioning System

    Far field distance

    Positioner to measurement antenna

    594 mm

    Positioner to top bulkhead

    750 mm

    Angular resolution

    ±0.01° azimuth/elevation

    Positioner absolute accuracy

    ±0.5° azimuth/elevation

    Range

    ±180° azimuth/elevation

    Rotational speed, per second

    300°

    Supported DUT weight

    1.2 kg (2.64 lbs)

    Supported DUT size

    160 mm × 330 mm × 330 mm (6.29 in. × 13 in. × 13 in.)

    Control interface

    Ethernet

    Operating temperature range

    0 °C to 40 °C

    Material

    DuPont Derlin acetal resin

    Measurement Antenna

    Model

    AQRH-15-2.4F

    Manufacturer

    Bojay

    Frequency range

    18 GHz to 44 GHz, nominal

    Polarization

    Dual

    Connectors

    2.4 mm (female)

    Gain

    12 dBi to 16 dBi

    Port-to-port isolation

    30 dB

    Impedance

    <2:1 VSWR

    Dimensions (W × L × D)

    32.2 mm × 32.2 mm × 61.5 mm (1.26 in. × 1.26 in. × 14.23 in.)

    Weight

    292 g (10.3 oz)

    Temperature

    Operating

    0 °C to 40 °C

    Storage

    0 °C to 50 °C

    Figure 1. Gain
    Figure 2. VSWR

    Reference Antenna

    Model

    DRH50

    Manufacturer

    RFspin

    Frequency range

    4.5 GHz to 44 GHz, nominal

    Polarization

    Single

    Connector

    2.4 mm (female)

    Gain[1]

    6 dBi to 20.5 dBi

    Cross polarization

    >30 dB

    Impedance

    <1.55:1 VSWR

    Dimensions (W × L × D)

    43.8 mm × 38 mm × 157.7 mm (1.72 in. × 1.49 in. 6.20 in.)

    Weight

    70 g (2.46 oz)

    Mounting

    Adapter with 0.25 in. inner thread

    Temperature

    Operating

    0 °C to 50 °C

    Storage

    -20 °C to 70 °C

    Figure 3. Gain
    Figure 4. VSWR

    Instrumentation

    Detailed specifications for the following instruments are available online at ni.com/manuals.

    System Performance

    Conditions

    System performance measurements are valid under the following conditions:

    • Configured frequency: 28 GHz
    • Configured measurements: RFmx SpecAn Peak Power
    • Number of beams: 1
    • Positioner speed: 100%
    • Sweep order: Elevation then azimuth
    Table 1. Autonomous Position Sweeping
    Conditions Number of Points Measurement Time
    • Azimuth 360° in 1° steps
    • Elevation 180° in 1° steps
    64,800 600 seconds
    • Azimuth 360° in 5° steps
    • Elevation 180° in 1° steps
    12,960 125 seconds
    • Azimuth 360° in 4° steps
    • Elevation 180° in 4° steps
    4,050 215 seconds
    • Azimuth 360° in 10° steps
    • Elevation 180° in 10° steps
    1,246 70 seconds

    Measurements

    Conditions

    • System calibration is performed as specified in the mmWave OTA Validation Test Reference Architecture User Manual
    • Self-calibration is performed before system calibration
    • System calibration is performed 10 times, and the reference antenna and all cables are disconnected between each calibration in multi-day span
    • RF cables included in the mmWave OTA Validation Accessories Kit are used
    Performance[2]

    Relative accuracy[3]

    0.5 dB

    SG pathloss

    13.5 dB to 18 dB

    24 GHz to 44 GHz

    SA pathloss + FSPL

    47 dB to 50 dB

    24 GHz to 44 GHz

    EVM[4]

    -37 dB

    • 1 Calibration data is provided with the QR code on the antenna.
    • 2 All performance values are presented as a 1σ standard deviation.
    • 3 Relative accuracy is the expected repeatability of EIRP measurements in the mmWave OTA Validation Anechoic Chamber based on system calibration.
    • 4 EVM using 5G NR, 100 MHz bandwidth, 120 kHz SCS, FR2, 64 QAM + number of additional DMRS = 2, at -12 dBm, 28 GHz.

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