Devices and Communications Modules

For Customers Developing 5G Devices (E.g., Millimeter Wave-Compatible Smartphones) and Antennas

In evaluating hard-wired 5G communication in the millimeter-wave band, it is necessary to prevent unwanted radio waves from leaking and minimize their impact on other peripheral devices. In addition, durability and reliability evaluations against temperature changes are also conducted, assuming the installation environment and the transportation environment to that location.
ESPEC provides optimal products for these evaluations.

Test System

High Temperature/Low Temperature Endurance/Operation Tests for 5G Communications Devices

The demand for various communications devices in the 0.6 to
6 GHz frequency bands that correspond to “Sub6” for 5th generation mobile communications systems (5G) is increasing and these devices are being evaluated. However, in evaluations in which power is applied to the device, leaks of unnecessary radio waves must be prevented to suppress the impact on other peripheral equipment.
ESPEC introduces a shielded test chamber that delivers
a temperature environment which blocks radio waves from
the outside and prevents the radio waves inside from leaking
to the outside.

  • High Temperature/Low Temperature Endurance/Operation Tests for 5G Communications Devices Shielded Temperature Chamber
    • This chamber by itself can prevent radio waves from entering and leaking from the test area, eliminating the chances of interference by and affecting the surrounding devices.
    • Radio wave interference in peripheral equipment and other test environments can be prevented by stopping leaks of unnecessary radio waves.
    • Installation in a shielded room is not required, allowing flexibility when changing layouts and helping to keep investments in equipment under control.
    • The “Advanced Shielded Specification” with double shielding of the shielded temperature chamber delivers a high attenuation rate of 70 dB or greater in 0.5 to 6 GHz frequency bands.

    Description Video

    Model Shielded specification
    SU−642
    PUSH−2 PUSH−3 PUSH−4 Advanced shielded specification
    PUSHH−3
    Frequency bands/
    attenuation rates
    4 GHz and 6 GHz/
    40 dB or greater
    0.7~2.4GHz/45 dB or greater
    2.4~4GHz/50 dB or greater
    4~6GHz/60 dB or greater
    0.5~6GHz/
    70 dB or greater
    Temperature range -40 to +100°C -40 to +100°C -40 to +100°C
    Interior dimensions(mm) W400×H400×D400 W500×H750×D600 W600×H850×D800 W600×H850×D800 W465×H640×D645

Systems for OTA Tests/Wireless Tests in Temperature Environments

For 5G base stations, temperature dependency evaluations in OTA measurements are required because antennas and wireless send/receive modules have been integrated into a single unit to reduce transmission losses.
These systems are capable of conducting temperature tests while possessing the functionality of an RF anechoic chamber.

  • Systems for OTA Tests/Wireless Tests in Temperature Environments Constant Temperature RF Anechoic Chamber
    • It is possible to conduct wireless RF performance tests in a temperature environment.
    • Shielding performance → frequency range: 0.5 to 30 GHz, attenuation rate: 60 db or higher.
    • There is no negative impact on peripheral equipment because leaking of radio waves generated by the specimen is prevented.
    • The interior of the RF anechoic chamber can be precisely controlled from low temperature to high temperature.
    • Freezing is prevented by our proprietary insulation technology, which allows the operation of a turntable or positioner without operating restrictions even at low temperatures.
    Controlled temperature range -40 to +100 °C
    Shielding performance Frequency range 0.5〜30 GHz *
    Attenuation rate 60 db or higher*
    Interior dimensions(mm) W14000×H3000×D7000 *

    * Contact ESPEC for shielding performance and interior dimensions not listed above.

  • Systems for OTA Tests/Wireless Tests in Temperature Environments Shielded Box/RF Anechoic Box + Precision Air Supply System
    • It is possible to conduct wireless RF performance tests
      in a temperature environment.
    • Temperature-regulated air from the unit-type temperature supply system is supplied to the RF anechoic box through
      a duct.
    • A box that allows radio wave transmissions is used to keep
      the temperature environment of the specimen constant.
    • You can connect this system to an RF anechoic box/shielded box that you already own.
      * Contact ESPEC in advance to determine if the system can be connected.
    Controlled temperature range -40 to +100 °C
    Shielding performance Frequency range 77 GHz
    Attenuation rate 50 db
    Interior dimensions(mm) W1200×H1200×D12000
    (The interior dimensions can be changed.)
  • Temperature Environment Wireless Protocol Test System - RF Anechoic Box-Type Low Temperature Chamber
    • Capable of wireless protocol tests in a temperature environment.
    • Ensures an attenuation rate of 60 dB or greater in 4.0 to
      6.0 GHz frequency bands.
    • The interior of the RF anechoic box can be precisely controlled from low temperature to high temperature.
    • Smaller installation area than an RF anechoic chamber to facilitate testing of small communications modules.

    Description Video

    ModelPUAN-3PUAN-4
    Frequency range /
    Attenuation rate
    0.7~2.4GHz/45dB~
    2.4~4GHz/50dB~
    4~6GHz/60dB~
    Controlled temperature range -40 to +100 °C
    Interior dimensions(mm) W300×H550×D500 W750×H750×D550

Transportation Evaluation Test System

The durability of 5G communications devices (e.g., smartphones) is evaluated for usage and transportation in reduced pressure environments, such as inside airplanes and at high altitudes.
ESPEC provides complex environmental test systems from low temperatures to high temperatures in reduced pressure environments.

  • Transportation Evaluation Test System Altitude Temperature Chambers VLC
    • Perfect for operation in low temperature/high temperature and reduced pressure environments and reproducing storage environments.
    • Supports transportation evaluations (reduced pressure tests) and IEC 60068-2-13.
    • Hermetic terminals are available as an option to allow tests that supply power to specimens.
    Model VLC-201P/301P
    Temperature range -20~+80℃
    Pressure control range 93.3~10.1kPa
    Interior dimensions(mm) W560×H560×D509/
    W800×H800×D709

Thermal cycle test systems

When evaluating durability in regard to changes in ambient temperature in communications devices and their components, thermal cycle tests from low temperature to high temperature are conducted. Controlling the temperature to the desired temperature when the specimen is powered and generating heat is also required in a temperature chamber.
ESPEC provides products with quick temperature rates of change and high heat-generation loads that are suited to these evaluations.

  • Thermal cycle test systems AR series
    • Supports a heat-generation load of 9.5 kW in a +20°C environment.
    • Equipped with large casters that allow a lifter or cart to be inserted when loading heavy specimens.
    • A door notch (option) is available that can help simplify the work to wire specimens.
    • The application of power and measurement timings can be synchronized with the temperature test program by using the time signal terminals.
    Temperature range -70 to +180°C
    Temperature Change Rate 4~15°C/min
    Allowable heat load (example) 9.5 kW
    (internal chamber temperature +20°C)
    Inside capacity 250~1100L
  • Thermal cycle test systems HR series
    • Supports a heat-generation load of 30 kW in a +20°C environment.
    • Rapid temperature change tests with a temperature rate of change of 20°C/min and 25°C/min can be conducted.
    • A broad lineup is available with capacities from 357 to 1800 l.
    Temperature range -70 to +180°C
    Temperature Change Rate 20 / min、25°C / min
    Allowable heat load (example) 9.30 kW
    (internal chamber temperature +20°C)
    Inside capacity 357~1800L
  • Thermal cycle test systems TCC
    • Can be controlled with a temperature change rate compliant with JESD22-A10F and IPC-9701.
    • A door notch (option) is available that can help simplify the work to wire specimens.
    • The application of power and measurement timings can be synchronized with the temperature test program by using the time signal terminals.
    Temperature range -70 to +180°C
    Temperature Change Rate 23°C / min
    Inside capacity 160L

Consult with Our Dedicated 5G/IoT Advisors

We can help you work through issues related to testing.

ESPEC Has Acquired ISO 27001 Information Security Certification

We will continue to maintain and improve our information security management systems so our customers can perform testing with peace of mind.



*The organization of these certificates is ESPEC CORP. Japan.

Motoki Syouzu

Environmental Test Equipment Headquarters Marketing Group

Let me make the most of the years the years of knowledge I have obtained as a sales representative for communications device and electronic components manufacturers to help you develop cutting-edge technologies.

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