As the spectrum becomes more fully utilized, there is increasing probability of interference among users as well as electronic equipment malfunctions that result from electromagnetic fields (EMF) radiated by a wide range of devices. Research to enable the prediction of near and far field radiation from UHF/VHF portable radios, such as cellular or Personal Communication Service (PCS) telephones, is a primary focus. Measurement of EMF to ensure levels conform with Health Canada's safety standards is of critical importance. In addition, research is conducted to establish EMF tolerance zones for the operation of electronic equipment.

Both measurement and mathematical modelling are being conducted to enable better understanding of the impact of EM waves on equipment used in communication, financial, medical, and military applications. Such equipment is increasingly dependent on electronic controls, with a resulting greater susceptibility to strong EM fields. To provide protection, interference mechanisms must be understood and characterized. As well, the effectiveness of shielding techniques must be evaluated.

Work is also under way to develop a near-field probe and probe arrays to allow instantaneous automatic field mapping. In related areas, CRC is working with DND on research concerned with EM hardening and the use of high-power microwaves for neutralization of land mines. In addition to R&D;, consulting services and validation measurements are being carried out on behalf of Canadian industry.

Further Information:

Wilf Lauber
Manager
Electromagnetic Compatibility Research
Tel: (613) 998-2377
Fax: (613) 998-4077
E-mail: wilf.lauber@crc.ca