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12.已知G(s)=G1(s)G2(s),且已分别测试得到:
G1(jω)的幅频特性|G1(jω)|=A1(ω) ,相频∠G1(jω)=ψ1(ω)
G2(Jω)的幅频特性|G2(jω)|=2 ,相频∠G2(jω)=-0.1ω

A G(jω)=2A1(ω).e-j0.1ωψ1(ω)
B G(jω)=[2+A1(ω)].ej[ψ1(ω)-0.1ω]
C G(jω)=2A1(ω).ej[ψ1(ω)-0.1ω]
D G(jω)=[2+A1(ω)].E-j0.1ωψ1(ω)

参考答案