Fig. 1. Typical multi-echo phenomenon

Fig. 2. Schematic of PDSH circuit

Fig. 3. Error model of PDSH circuit

Fig. 4. Schematic of multi-echo peak detection circuit

Fig. 5. Simulaion output with different channel numbers (input pulse amplitude of 500 mV, pulse width of 5 ns)

Fig. 6. First stage PDSH circuit

Fig. 7. Second stage of PDSH circuit

Fig. 8. Block diagram of control circuit

Fig. 9. Time sequence of the logic control

Fig. 10. Micrograph of multi-echo peak detection circuit

Fig. 11. Measured transient response

Fig. 12. Measured results of input and output amplitudes of each channel

Fig. 13. Measured results of relative error of output voltage between channels