Discrete-Level Broadband Excitation Signals: Binary/Ternary Chirps

摘要

Chirps (fast frequency sweeps) and chirp-like signals have become popular excitation signals in measurement techniques, particularly as the stimulus in bioimpedance measurement [1,2]. The main advantage of chirps is the independent scalability in time and frequency domains: the duration of a pulse (usually short) and its frequency range (usually wide) can be adjusted separately. This feature is important in biomedical investigations for quick monitoring of the changing state of living tissue and cells.