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(a) Diagram of thermoacoustic effect induced by microwave illumination, and (b) its equivalent series RLC resonance circuit model driven by voltage source v(t).
Diagram of the experimental setup for the observation of both TA and TAR effect induced by single pulse and multi-pulse microwave source.
(a) Incident multi-pulse and single pulse microwave waveform in time domain; (b) induced acoustic signals (dashed box) after band-pass filtering by TAR and TA effects with regards to the incident microwave source.
Model fitting of (a) microwave source in experiment (blue) and voltage source in circuit simulation (red); (b) induced acoustic signal in experiment (green) and current in circuit simulation (red).
Spectrum of TAR signal (solid blue line), TA signal (dotted green line), and noise (solid dotted blue line).
Proposed coherent demodulation scheme by treating biological tissue as a RLC communication channel to extract the depth-resolved information.
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