Hoffmann, K. - Škvor, Z.: On Radio Interference Filter Measurement. In ARFTG /Automatic RF Techniques Group/ Differential Measurements. Piscataway: IEEE, 2003, s. 227-231. ISBN 0-7803-7143-7.
A new measurement method for on site testing of multiport radio interference filters (RIF) on shielded chamber is designed. The method is based on scalar measurement only and makes possible a pessimistic estimate of the filters damping in frequency band from DC-3 GHz. More than 120 dB dynamic of measurement can be expected. At the time being there is no acceptable standard for these multiport measurements.