• 2022-06-12
    若载波uc(t)=Ucmcosωct,调制信号uΩ(t)= UΩmcosΩt,则调相波的表达式为
    A: uFM(t)=Ucmcos(ωct+mpcosΩt)
    B: uFM(t)=Ucmcos(ωct+mfsinΩt)
    C: uFM(t)=Ucm(1+mpcosΩt)cosωct
    D: uFM(t)=kUΩmUcmcosωctcosΩt