• 2022-06-12
    5.若载波uC(t)=UCcosωCt,调制信号uΩ(t)= UΩcosΩt,则调相波的表达式为 ( )
    A: A.uPM(t)=UCcos(ωCt+mfsinΩt)
    B: B.uPM(t)=UCcos(ωCt+mpcosΩt)
    C: C.uPM(t)=UC(1+mpcosΩt)cosωCt
    D: D.uPM(t)=kUΩUCcosωCtcosΩt