The first issue of the Journal of Electrical Bioimpedance saw the light in 2010 by the personal initiative of two men from the University of Oslo, Prof. Sverre Grimnes and Prof. Ørjan G. Martinsen, who has been the editor-in-chief of our Journal during all these ten years. With the sense of gratitude, we hope that he continues his persistent work also during the approaching next decade in the new conditions with a growing number of bioimpedance publications worldwide. However, every success creates new problems, some of which are discussed below.
Different excitation signals are applicable in the wideband impedance spectroscopy in general. However, in electrical bioimpedance (EBI) measurements, there are limitations that set specific demands on the properties of the excitation signals. This paper compares the efficiency of different excitation signals in a graspable presentation and gives recommendations for their use. More exactly, the paper deals with finding the efficient excitation waveforms for the fast spectroscopy of electrical bioimpedance. Nevertheless, the described solutions could be useful also in other implementations of impedance spectroscopy intended for frequency domain characterization of different objects.