Matakuliah : H0122 / Dasar Telekomunikasi Tahun : 2008. Modulasi Frekuensi Pertemuan 4. Learning Outcomes. Mahasiswa dapat menjelaskan teknik modulasi frekuensi dan karakteristiknya. Outline Materi. Prinsip Modulasi Frekuensi Bandwidth Hubungan dengan Modulasi Fasa. Angle Modulation.
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Tahun : 2008
Mahasiswa dapat menjelaskan teknik modulasi frekuensi dan karakteristiknya.
m(t) = Vccos [ωct + (t)]
Kfis the frequency deviation sensitivity
The frequency of a harmonic carrier signal is varied in such a way that the instantaneous frequency deviation i.e. the difference between the instantaneous frequency and the carrier frequency is linearly related to the size of the modulating signal at a given instant of time.
m = Kf Vm/ωm
Jn (m) is the Bessel function of the first kind
the carrier by ωm
from the carrier by 2ωm
the carrier by nωm
FM modulator: f = 10 kHz, fm = 10 kHz, Vc = 10 V, fc = 500 kHz, m=1
Kf is the deviation sensitivity