如何使用 UliEngineering 在 Python 中计算信号传播延迟
你可以使用 UliEngineering Python 库轻松地计算信号通过传输线的传播延迟：
propagation_delay.py
from UliEngineering.Electronics.PropagationSpeed import *
from UliEngineering.EngineerIO import *
# 计算 10cm FR4 PCB 走线的传播延迟
delay = propagation_delay("10cm", 4.5)
print(f"Delay for 10cm FR4 trace: {format_value(delay, 's')}")
# 计算 1m 电缆（εr=1.0）的传播延迟
delay = propagation_delay("1m", 1.0)
print(f"Delay for 1m air: {format_value(delay, 's')}")示例输出
propagation_delay_output.txt
Delay for 10cm FR4 trace: 1.58 ns
Delay for 1m air: 3.33 ns传播延迟使用以下公式计算：$t = \frac{l}{c \cdot VF}$，其中 $l$ 为长度，$c$ 为光速，$VF = \frac{1}{\sqrt{\varepsilon_r}}$ 为速度因子。
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