Q2) A wideband FM signal is generated from a narrowband FM generator by Armstrong's method as shown below. The desired carrier frequency, fc is 100 MHz and frequency deviation Af = 75 kHz. The message signal to be broadcast is given by: m(t) = cos(30000nt) The following information is given: m(1) Freq. Multiplier (k.) Freq Multiplier (ka) NBFM BPF fo = 100 kHz, Afo = 10 Hz, kz = 50 termine: a. Frequency Multiplier k,. b. Carrier frequencies f, and f and the corresponding frequency deviations Af and Af2. c. The oscillator frequency fLo- d. The center frequency and bandwidth of the bandpass filter.
Q2) A wideband FM signal is generated from a narrowband FM generator by Armstrong's method as shown below. The desired carrier frequency, fc is 100 MHz and frequency deviation Af = 75 kHz. The message signal to be broadcast is given by: m(t) = cos(30000nt) The following information is given: m(1) Freq. Multiplier (k.) Freq Multiplier (ka) NBFM BPF fo = 100 kHz, Afo = 10 Hz, kz = 50 termine: a. Frequency Multiplier k,. b. Carrier frequencies f, and f and the corresponding frequency deviations Af and Af2. c. The oscillator frequency fLo- d. The center frequency and bandwidth of the bandpass filter.
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Transcribed Image Text:Q2) A wideband FM signal is generated from a narrOwband FM generator by
Armstrong's method as shown below.
The desired carrier frequency, fc is 100 MHz and frequency deviation
Af = 75 kHz. The message signal to be broadcast is given by:
m(t) = cos(30000nt)
%3D
The following information is given:
m(()
Freq
Multiplier (k)
Freq
Multiplier (ka)
NBFM
BPF
fo = 100 kHz, Af = 10 Hz,
kz = 50
Determine:
a. Frequency Multiplier k,.
b. Carrier frequencies fi and f; and the corresponding frequency
deviations Af, and Af2-
c. The oscillator frequency fLo-
d. The center frequency and bandwidth of the bandpass filter.
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