디지털전자회로정보통신산업기사 · 2010년03월07일 · 14/80
14.반송파 vc(t) = Vc cos ωct, 신호파 vs(t) = Vs cosωst라 할 때, FM 피변조파 vm(t)를 표시한 것은?
1
vm(t) = Vc(1+mf cos ωst) cos ωct
2
vm(t) = Vc cos(ωct+mf sin ωst)정답
3
v m (t) = V c cos(ω c t+ v s (t))
[IMG]https://img.comcbt.com/cbt/data/fu/fu20100307/fu20100307m14b3-1.gif?1547555418
4
v m (t) = V c cos(ω c t+ V s cos ω s t)
[IMG]https://img.comcbt.com/cbt/data/fu/fu20100307/fu20100307m14b4-1.gif?1547555418