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Interference-free electronics thanks to
precise test conditions

Typical structure of a EMC chamber by AP Americas

title
> 10,000

rooms installed

A-Z solutions

for all requirements

100%

Quality in materials,
construction and project workflow

100%

durable, modular and
reusable

Technology Team

 

 

"Concentrated
expertise."

The AP Americas' Team brings together
engineers and industry know-how
with long-standing project experience.

Range of services

  • All standards

    Your EMC room, tailored to suit your test part and the test standards that are relevant to your needs

  • All sizes

    Test chambers for 3 m, 5 m and 10 m measurement intervals based on individual requirements

  • Pre-compliant or fully compliant

    Chambers for acceptance preparation or for standardised testing

  • Partially anechoic (SAC) or fully-anechoic (FAR)

    For tests with a reflective floor plate or in completely reflection-free chambers

System components

  • Shielding

    Stable barrier for electromagnetic radiation
    Absorber chambers are shielded according to the principle of a Faraday cage. A completely closed frame of metal ensures that electromagnetic radiation cannot penetrate or escape. This makes certain that external influences do not interfere with the measurements. 

    Bolted shielding
    Our shielding made of bolted metal modules convinces with its reliable long-term performance and short installation time. 

    Welded shielding
    We recommend welded shielding to accommodate strong condensation or for environments in which aggressive chemicals are used.

    Portfolio
    – Bolted shielding
    – Welded shielding

    Technical data
    – Galvanised sheet steel with a thickness of 2 mm
    – 20 µm galvanic coating
    – 275 g/m2 galvanisation grammage

     

    The shielding is carried by a stable steel skeleton The shielding is carried by a stable steel skeleton
    Bolted shielding, inside Bolted shielding, inside
    Bolted shielding modules with HF sealing strip Bolted shielding modules with HF sealing strip
    Example of welded shielding Example of welded shielding
  • Absorbers

    Absorbers by Emerson & Cuming Anechoic Chambers (E&C)
    We exclusively use absorbers by our subsidiary Emerson E&C Anechoic Chambers. They deliver outstanding, broadband absorption performance and reliable quality.

    Hybrid absorbers
    Hybrid absorbers are the most frequently used variants in EMC chambers. They are a combination of ferrite absorbers and pyramid absorbers. While the ceramic ferrite tiles are good for a frequency range up to one gigahertz, the pyramid-shaped foam absorbers are ideal for the higher range of 1–40 gigahertz and above. 

    Ferrite absorbers
    We use quadratic nickel-zinc ferrite with a side length of ten centimetres. Their absorption principle is based on electromagnetic interaction with the HF radiation. We bolt together and install the precisely ground ferrite tiles individually in order to cover large surfaces completely and without any gaps. This ensures an ideal magnetic flow and hence optimised absorption. The bolt connections sustainably prevent the tiles from dislodging.

    To ensure absorption, it is necessary to fit a reflective metal layer behind the ferrite. The distance from this layer influences the frequency-dependent absorption behaviour. We place the metal layer between the tiles and the fibreboard panels. By doing so, we achieve maximum performance at 30 megahertz and an improved alignment between the foam absorbers in the gigahertz range. It also ensures lasting protection against detachment of the metal layer.

    Frustum-shaped polyurethane absorbers
    Our frustum-shaped E&C absorbers are made of carbon-impregnated polyurethane foam, the most commonly used absorber material for EMC chambers. Their functions are determined by the absorber's pyramid shape, the porous structure and the absorbent properties of the material. The pyramid shape means that reflected radiation fractions are not mirrored back into the room. The porous structure contributes significantly to the absorption effects of the carbon-impregnated foam.

    Frustum-shaped foam absorbers by E&C are available in many sizes and variants to ideally accommodate the individual customer needs. 

    Fine-tuning the performance of hybrid absorbers (matching-layer technology)
    We install layers of polyurethane foam in varying thickness below the pyramid absorbers in order to ensure optimised absorption performance. These matching layers are adjusted individually, depending on the absorption properties of each individual pyramid absorber.

    Portfolio
    – E&C hybrid absorbers
    – Ferrite absorbers
    – Frustum-shaped E&C polyurethane absorbers made of solid material
    – Frustum-shaped E&C polyurethane absorbers, hollow
    – Wedge E&C polyurethane absorbers
    – Protective caps (white caps)

    Offset ferrite tiles, bolted in place Offset ferrite tiles, bolted in place
    Frustum-shaped E&C absorbers made of polyurethane Frustum-shaped E&C absorbers made of polyurethane Frustum-shaped E&C absorbers made of polyurethane Frustum-shaped E&C absorbers made of polyurethane
    Hybrid absorbers made of polyurethane and ferrite absorbers Hybrid absorbers made of polyurethane and ferrite absorbers
    The matching layer ensures optimised electromagnetic absorption The matching layer ensures optimised electromagnetic absorption
  • Doors and gates

    What counts
    A shielded room is only as good as its weakest link. It is therefore essential to pay particular attention to the fitted components. This applies to doors especially, as they are moved every day and are therefore more susceptible to wear.

    Doors are our strength
    Doors and gates by AP Americas are easy to operate, extremely rugged and guarantee extraordinary sound attenuation, even after many thousand closing cycles. All wear parts are easy to replace.

    The shielding effects are directly dependent on the contact pressure across a broad frequency range. Our doors therefore possess extreme torsional stability and a robust structure in order to achieve remarkably high and homogeneous contact pressure at the sealing surfaces. This produces outstanding sound attenuation values from low frequency bands and even to the high microwave range. For instance, we are the only manufacturer that produces double-winged doors with 100 dB shielding up to 40 GHz.

    Portfolio
    – Single-wing doors
    – Double-wing doors
    – Sliding doors
    – Gates
    – Manual, electric or pneumatic operation
    – Ramps or ground-level access
    – Customised designs and options

     

    Gate with ground-level access Gate with ground-level access
    Single-wing doors with safety features Single-wing doors with safety features
    Gate control panel with touch display Gate control panel with touch display
    Double-wing door with 100 dB shielding up to 40 GHz Double-wing door with 100 dB shielding up to 40 GHz
    Sliding door Sliding door
  • Signal lines, power supply, feedthroughs, ventilation

    Every connection, precisely where you need it
    Every line that is introduced from outside into a shielded room and every opening in the shielding may potentially allow electromagnetic interference to enter the chamber. AP Americas makes sure that the power connections, signal lines, feedthroughs and apertures you require can be used without impairing the shield's function. Tailored entirely to suit your needs, we position the connections for short distances.

    Portfolio
    – Power and signal lines
    – Connector panels, floor connection boxes
    – Filters for power and signal lines
    – Converters for the optical signal lines
    – Infeed pipes for liquids and gases
    – Ventilation ducts (honeycombs), exhaust gas extraction lines

    Recessed floor connection box Recessed floor connection box
    Floor connection panel at the centre of the turntable Floor connection panel at the centre of the turntable
    Wall connection panel Wall connection panel
    Honeycomb ducts for air exchange Honeycomb ducts for air exchange
    Pipe fed through the shielding Pipe fed through the shielding
    Network filter Network filter
  • Image, audio, monitoring

    Information and communication technology
    Technical communication systems for between the test chamber and the control room facilitate coordination when setting up test cycles. Cameras are used to safely monitor all processes from outside during the emission and immunity tests. AP Americas designs all information and communications technology to suit your requirements precisely. The components used do not interfere with the test environment and are immune to powerful electromagnetic fields. Each component is validated according to our strict internal quality control system.

    Portfolio
    – Telephones
    – Microphones
    – Video cameras, controllers and storage– Infra-red camera
    – Digital video technology
    – Monitors
    – Loudspeakers
    – Signal lamps
    – Smoke alarm systems

     

    EMC video camera on a wooden tripod EMC video camera on a wooden tripod
    Control room with video controller and video monitoring Control room with video controller and video monitoring
    EMC video camera and pressure chamber loudspeaker on a wall bracket EMC video camera and pressure chamber loudspeaker on a wall bracket
    Signal lamp Signal lamp "Emergency exit"
    Smoke detector fitted outside the test chamber Smoke detector fitted outside the test chamber
  • Lighting

    HF emission-free, bright and energy efficient
    The right lighting creates a safe working environment and a bright, pleasant ambience. We select special halogen, fluorescent or LED lamps, depending on the requirements. For emission testing, we use HF emission-free lamps to ensure that the tests are not falsified. We position halogen lamps directly below the ventilation grilles to improve heat removal. Electric winches are available for high ceilings, which are used to lower the lamps to replace the luminaires.

    Portfolio
    – Halogen lamps
    – Fluorescent lamps
    – LED lamps
    – Electric winches

     

     

    Halogen spotlight Halogen spotlight
    Electric winch for simple luminaire replacements in tall rooms Electric winch for simple luminaire replacements in tall rooms
    LED lamp LED lamp
    Detailed view of the LED lamp Detailed view of the LED lamp
  • Positioning system, test accessories

    Highly precise, repeatable and convenient positioning
    The positional accuracy of the turntable, test bench and antenna mast directly affect the measurement accuracy. In addition, the reflective properties of these components impact significantly on the performance of the absorber chamber. AP Americas exclusively offers premium products in outstanding quality and with maximum ease-of-use to position test objects and antennae.

    Portfolio
    – Turntables
    – Test benches
    – Antenna masts
    – Controllers

    Metal turntable for low-reflection, semi-anechoic chambers (SAC) Metal turntable for low-reflection, semi-anechoic chambers (SAC)
    Test bench on a turntable Test bench on a turntable
    Wooden turntable for fully-anechoic rooms (FAR) Wooden turntable for fully-anechoic rooms (FAR)
    EMC antenna mast with EMC antenna and low-emission cable EMC antenna mast with EMC antenna and low-emission cable
    Controller for an antenna mast, turntable, linear positioning device Controller for an antenna mast, turntable, linear positioning device
  • Special accessories

    Specifically for your application
    Do you need special RF low-emission accessories for your application? Contact us for more information.

    Portfolio
    – Roller test bench
    – Positioning device for wireless devices
    – Other special accessories according to requirements

    Positioning unit for wireless devices Positioning unit for wireless devices
    Roller test bench Roller test bench

Antenna Measuring Hall
Rohde & Schwarz
Memmingen, Germany

 

 


by Albatross Projects

Visit us
at the
AMTA 2019
in San Diego, CA
10/06 - 10/06/2019

More about
Modernisation of your test chamber with AP Americas

Test chambers by AP Americas are designed
from the get-go for downstream upgrading or relocation
with as little effort as possible.

Verification measurements by AP Americas

We use our calibrated measuring devices
to determine a variety of electromagnetic properties in your
measurement station and chamber.

AP Americas Inc.

AP Americas Inc.
8101 Ridgepoint Drive, Suite 107
Irving, TX 75063
USA

Phone: +1 972 295 9100
Fax: +1 972 810 2332

info(at)apamericas.com