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In this paper the electromagnetic inductance (EM1)-shielding of metaland ferroelectric-particle filled polymers is described. The composite, containing only metallic fillers, has a shielding effectiveness comparable to conventional products. The addition of a few percent of ferroelectric material to this composite enhances the shielding behavior by several orders of magnitude-without increasing its electrical conductivity. In this three component composite the shielding effectiveness reaches a maximum close to the ferroelectric/paraelectric transition temperature. The synergetic effect, obtained by the addition of ferroelectrical particles, is related to the high dielectric losses of ferroelectric material close to its transition temperature.

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A double probe nearfield scanner,for measurement in time domain is presented in this paper. The advantages of measurements in time domain compared with measurements in frequency domain are time efjciency and the simplified capture offrequency hopping signals. The double probe set-up allows measurements of the absolute value of thejeld strength as well us of the phase. It is also possible to measure occasionally appearing transient pulses. This allows not only the representation of field strengths on the measurement plane but also the illustration of wave propagation or radiation inform of an animated picture sequence. Results of various measurements are shown in this paper.

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