仿真
热分析
FR4、铜和过孔中的稳态传导，加上两个面的对流，在 GPU 上求解。
FR4（面内 0.8 W/mK，垂直 0.3 W/mK）、铜片和过孔桶中的稳态传导，双面对流，在 GPU 上通过预条件共轭梯度法求解。
name = "lna-thermal"
kind = "thermal"
layout = "lna"
cell = 0.2 # default 0.2 mm
ambient = 25.0
# h_top = 10.0 # W/m2K, still air; 25+ with a fan
# h_bottom = 10.0
[[sources]]
ref = "U1"
power = "0.45W"
theta_jc = 65.0 # adds a junction estimate: pads + P x theta
pads = ["2"] # the pads the heat leaves through, default all映射：每个铜层的温度。读数：电路板峰值、每个源的焊盘和结温。