def test_reflection_coefficient(self):
self.assertRaises(ZeroDivisionError, reflection_coefficient, -50)
self.assertEqual(reflection_coefficient(50), 0)
self.assertEqual(reflection_coefficient(75), 0.2)
def vswr_transformed(cls, z, ratio=49) -> float:
refl = reflection_coefficient(z / ratio)
mag = abs(refl)
if mag == 1:
return 1
return (1 + mag) / (1 - mag)