传输线入门经典资料Transmission LinesComplex Numbers, Phasors and CircuitsComplex numbers are defined by points or vectors in the complex plane, and can be represented in Cartesian coordinatesz = a + jbor in polar (exponential) formj = 1z = A exp( jφ) = A cos ( φ ) + jA sin ( φ ) a = A cos ( φ ) real part b = A sin ( φ ) imaginary partwhereA= a + b22φ = tan1 b a1 Amanogawa, 2006 ……