Login
Registrati
Reimposta password
Pubblica & Distribuisci
Soluzioni Editoriali
Soluzioni di Distribuzione
Temi
Architettura e design
Arti
Business e Economia
Chimica
Chimica industriale
Farmacia
Filosofia
Fisica
Geoscienze
Ingegneria
Interesse generale
Legge
Letteratura
Linguistica e semiotica
Matematica
Medicina
Musica
Scienze bibliotecarie e dell'informazione, studi library
Scienze dei materiali
Scienze della vita
Scienze informatiche
Scienze sociali
Sport e tempo libero
Storia
Studi classici e del Vicino Oriente antico
Studi culturali
Studi ebraici
Teologia e religione
Pubblicazioni
Riviste
Libri
Atti
Editori
Blog
Contatti
Cerca
EUR
USD
GBP
Italiano
English
Deutsch
Polski
Español
Français
Italiano
Carrello
Home
Riviste
Journal of Electrical Bioimpedance
Volume 9 (2018): Numero 1 (January 2018)
Accesso libero
On the selection of excitation signals for the fast spectroscopy of electrical bioimpedance
Jaan Ojarand
Jaan Ojarand
e
Mart Min
Mart Min
| 31 dic 2018
Journal of Electrical Bioimpedance
Volume 9 (2018): Numero 1 (January 2018)
INFORMAZIONI SU QUESTO ARTICOLO
Articolo precedente
Articolo Successivo
Sommario
Articolo
Immagini e tabelle
Bibliografia
Autori
Articoli in questo Numero
Anteprima
PDF
Cita
CONDIVIDI
Pubblicato online:
31 dic 2018
Pagine:
133 - 141
Ricevuto:
11 dic 2018
DOI:
https://doi.org/10.2478/joeb-2018-0018
Parole chiave
Impedance measurement
,
bioimpedance
,
signal design
,
signal to noise ratio
,
optimization
© 2018 J. Ojarand, M. Min published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.
Fig.1
Simplified structure of the EBI spectroscopy system.
Fig.2
Waveform (a) and magnitude spectrum (b) of the pulse with relative duration t = (64/1000).
Fig.3
Waveform (a) and magnitude spectrum (b) of the exponentially modulated short chirp with relative duration t = 0.5.
Fig.4
Rectangular waveform (a) and its magnitude spectrum (b).
Fig.5
Waveforms (a) and magnitude spectrum (b) of the step waveform with a rise time of 1/500 of the signal period. Note that the first part of the time scale is magnified by 20. Diagonal hatch illustrates the energy content of the signal starting from zero and cross-hatches the energy content of the signal starting from -1.
Fig.6
Waveforms of the sinusoidal (a) and signum-chirp (b).
Fig.7
Relative deviation of RMS magnitudes of the frequency components from their mean values of the linear sinusoidal chirp with normalized frequencies in the range from 10 to 50.
Fig.8
Relative deviation of RMS magnitudes of frequency components from their mean values of the signum chirp with normalized frequencies in the range from 10 to 50.
Fig.9
Waveform of the 3-rd order MLBS (a) and its magnitude spectrum (b).
Fig.10
BMS waveform (a) and its magnitude spectrum (b) with four equally emphasized components (frequency bins 1, 3, 5, 7).
Fig.11
BMS (a) and its magnitude spectrum (b) with rising levels of components (frequency bins 1, 3, 5, 7).
Fig.12
CF of the optimized multisine signal with a consequent frequency distribution (i = 1,2,3,4 …. k), for a k in the range from 4 to 40. A green line level corresponds to the CF of a single sine wave.
Fig.13
Normalized RMS magnitudes of consecutively and logarithmically distributed frequency components of optimized multisines (MS, dashed lines) and BMS (solid lines) vs. a number of frequency decades a signal covers.