PQE’s services undertake electromagnetic measurements, surveys, investigations and testing over the entire frequency range between 20 Hz and 400 GHz. Assessments are made of susceptibility and emissions, to conducted and radiated EM coupling mechanisms, in both the frequency and time domains.

Work is carried-out at all levels ranging from individual components / equipments, data centers, hospitals, broadcast centers, and buildings. For defence, aerospace, railways, and the built environment. PQE has both fixed and mobile facilities, including: shielded enclosures, instrumentation trailers, spectrum analysers, signal generators, amplifiers, antennas and probes.

The facilities include complex data / signal processing capabilities.

 
The main areas of work include:

• Determination of EM environments
• Problem solving and consultancy
• Railway and train testing
• Research and development
• Shielding and coupling assessments
• Radiation hazards to personnel, flammable atmospheres and electro explosive devices (detonators)
• Site surveys of radiated and conducted EM environments
• Suppression to mitigate against unwanted effects
• Training / Courses
• TV shadowing/reflection problem
• Whole aircraft testing and certification

 
The EM Group consists of EM management, Measurement and Modelling
EM modelling using single analytical expressions or complex modelling tools can help predict the risks to electronic equipment, human health and explosive environments from a range of EM threats. Field strengths inside a building due to external threats

 
The main benefits of modelling are:

• Large area coverage can be achieved
• Proposed and non-operational systems can be assessed
• Statistical factors can be applied to determine increased risks over long periods.
  For example, it is important to consider the effects of new mobile telephone base-stations being built in the vicinity
• "What-if" scenarios can easily be tried to optimise a system by minimising the risk and costs.
  For example, the impact of installing shielding, or varying antenna placement may be investigated.
• The underlying mechanisms can be investigated 

 
Key services

• The effect of the environment on large infrastructures (e.g. buildings and railways). This includes threats external to the infrastructure, such as mobile base-stations, radars, etc and could require designing shielding to mitigate any possible impact.
• The effect of the large infrastructure on the environment e.g. TV assessments
• The compatibility of the building/infrastructure with possible internal threats and equipment that could be adversely impacted. This could include assessments of minimum cable separations, field strengths from power distribution, zoning of areas where sensitive equipment must not be placed.
  

Contact our application engineers for further details click here.