Yan Li, Qinwei Hu, Zhiming Rao. High-Precision TOF Readout Circuits for THz Radars[J]. Laser & Optoelectronics Progress, 2025, 62(3): 0325001
- Laser & Optoelectronics Progress
- Vol. 62, Issue 3, 0325001 (2025)
Fig. 1. Schematic of THz radar TOF readout
Fig. 2. TOF readout circuit internal frame diagram
Fig. 3. Schematic of high-speed comparator
Fig. 4. Schematic of TDC-GP22
Fig. 5. TDC-GP22 measurement principle diagram
Fig. 6. FPGA software design flowchart
Fig. 7. Performance calibration platform
Fig. 8. Linear fit plot
Fig. 9. Accuracy test. (a) 0.1 µs time difference; (b) 1 µs time difference
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Table 1. Measurements at different time intervals
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