Case Studies

Global EMC has successfully delivered 3 new double tiered research and development test cabinets for mobile phones (cell phone) product development. The test cabinets have a high performance shielded enclosure to isolate any ambient signals from the internal testing environment and an interior fully lined with anechoic microwave absorber.

The shielded anechoic cabinets where delivered fully assembled with no assembly required for the end user. Simple to use and designed to accept a wide range of requirements each cabinet was designed to be future proof and versatile.

Designed specifically to fit through a standard sized door the cabinets are transportable without needing to dis-assemble any parts.
Feature packed with filtered internal mains power sockets, Fibre waveguides, ethernet and coaxial sockets the cabinet gave the client a flexible and all-round testing environment.

The client approached Global EMC to provide two shielded enclosures for their new electroencephalogram (EEG) room. The rooms required shielding to enable highly sensitive measurements to take place within the room without the possibility of ambient interference.
The client also required a testing environment where anyone inside the room would feel comfortable and also free from distraction. This would enable the measurements taken to be isolated from external influence.
The room was also required to be as compact as possible to fit inside the allocated host building.

The rooms where specially designed using Global EMC’s high permeability shielding to provide attenuation to magnetic fields caused by nearby electrical equipment and cabling. This gave the client a controlled and repeatable environment to perform their measurements and tests. The resultant field inside the room was <0.2µT, well within the allowable tolerance limits of the EEG equipment.
To provide a comfortable environment for the user, noise reduced air conditioning was supplied which had user control for temperature adjustment. Dimmable fibre optic lighting was installed to eliminate interference but also allow user control to create a low light level during testing.
Sound (voice and vibration) attenuation was provided using specialist sound absorbing materials and the whole chamber was mounted on anti-vibration mounts to reduce vibration noise transmitting from the floor below.
Dark blue walls and carpet was provided to give the enclosure a more “office-style” comfortable feel. Mains power outlets, data points and EEG equipment signal cable sockets where provided to make the room practicable and versatile.

The client benefited from two new bespoke shielded enclosures for EEG use. Each room was entirely separate enabling two separate tests to be carried out independent of each other.
The bespoke nature of Global EMC’s EEG-SR means that the dimensions of the room could be adjusted to maximize the available space in the host building. Global EMC worked with other contractors as part of the rooms internal fit out as a coordinated project, to make the room available before students returned for the first term after summer.
The chamber is delivered in component form to enable the shielded room to be delivered into the host building with minimum disruption. All components can pass through a standard single door of the host building and is assembled onsite.

Global EMC provided a multi-layer high permeability Faraday cage to line the walls, ceiling and floor of the host building. This enabled the user to maximize the internal space of the room, whilst not enclosing the microscope to permit ease of maintenance and workspace around the microscope.
Shielded doors, waveguides and honeycomb vents completed the installation to allow penetrations and services to be brought into the room.
The shield effectiveness was stringently tested by putting adjoining electrical cables under full load condition whilst performing the “quietness” commissioning certification tests.

The client received a shielded enclosure that exceeded the required magnetic field shielding required. The room post mitigation achieved a <5nT p-p in magnetic field perturbations as measured over the allotted time.

Global EMC has been awarded Cyber Essentials Plus accreditation via independent certification body. The Cyber Essentials Plus accreditation scheme by the National Cyber Security Centre (NCSC) ensures any data we keep is secure and protected from Cyber attacks.

Having Cyber Essentials Plus certification enables Global EMC to meet the criteria required to handle sensitive and personal information to enable Global EMC to bid for central government and defense contracts in the United Kingdom and EU.

To design, manufacture, install and commissioning a new 8.1m (L) x 5.2m (W) x 3.2m (H) fully anechoic test chamber. The client required the chamber to be complaint to DEF-STAN 59-411, RTCA DO160 and MIL-STD-461G for military testing. The chamber had a secondary use for pre-compliant EMC testing to CISPR16-1-4 for commercial applications.
The project also included the relocation of two shielded rooms (Faraday cages) connecting one of the shielded rooms to the new anechoic test chamber for use as a control room.
In addition the client asked for the design, manufacture, install and commissioning a new 2.5m (L) x 2.5m (W) x 2.5m (H) shielded room (Faraday cage) that required shielding effectiveness of greater than 100dB in the frequency range of 1 GHz to 6 GHz.

A Faraday cage was constructed using galvanised sheet steel in modular “pan” type construction connected to a self-supporting steel structure. The internal surfaces of this was fitted-out with Ferrite tiles and hybrid anechoic absorbers to give a lining of absorbing materials.
An existing shielded room was then relocated and installed adjoining the new chamber. This was to provide a control room to the new facility. The chamber was independently tested and verified and exceed the client’s requirements.

"EMC Chamber performance very good - Shielding Tested >120dB, Calibrated for NSIL (DEF STAN 59-411), FAR Site Attenuation & Site VSWR (CISPR 16.1.4) & Field Uniformity (EN 61000-4-3)"

The ability of Global EMC to dismantle and relocate test facilities enabled us to reduce the capital expenditure of the project making the project more economically viable for the client. The fully anechoic chamber was designed to give the client the broadest range of testing applications possible within the confines of the space available.
The chamber had fantastic results for a pre-compliant chamber to CISPR 16-1-4 emissions test standard.

Global EMC is currently installing shielding to the new UHV laboratory at UoM.
The client required the design, manufacture and installation of a brand new, state of the art High Voltage Laboratory for research and education purposes. The new laboratory will keep the University at the cutting edge of High Voltage research. Ensuring it is one of the country’s leading academic providers in High Voltage experimentation and development.
The client approached Global EMC to provide shielding to the new facility to exclude (or sufficiently attenuate) frequencies of less than 1000 kHz (1 MHz). This would attenuate any high pd background noise level that was present in the non-shielded areas.

Global EMC provided shielding as per the Faraday Cage principle of a six sided enclosure. Due to the high voltages that would be present inside the laboratory, specialist contractors provided Earthing and Grounding and was interfaced to the shielding and a copper mesh floor.
The shielding was electrically isolated using dielectric spacers from the host building to create an electrically isolated laboratory. This created a structure within a structure concept including the large overhead crane that would be provided by others.
The isolated structure would be constantly monitored during the construction phase and would instantly alert if the shielding became in contact with the host building.
A control room would be installed to give the end user both a safe place to control the experiments whilst also providing an educational platform through a large shielded window into the laboratory.
Construction is on-going and is due to complete in 2020.

Due to the complex and bespoke nature of the laboratory a detailed and intricate design and development process was undertaken. Using AutoCAD, Solidworks and Revit a co-ordinated design approach was achieved. Regular onsite meetings with the client’s design team, other contractors and client workshops, helped progress and refine the design to construction. Workshops with specialist design consultants Haefly were also held to provide specialist knowledge and design information. During construction, Global EMC’s design team provided on-going site visits to monitor the design during the installation process.