A periodic composite signal contains sine harmonics with frequencies from 5 KHz

Question

A periodic composite signal contains sine harmonics with frequencies from 5 KHz to 40

KHz. The fundamental frequency of the first harmonic of this composite signal is 5 KHz and

all harmonics in the range 5-40 KHz are included in the composite signal. The signal is

transmitted over a channel that has attenuation of - dB for all frequencies less than or equal

to 20 KHz and attenuation of -3 dB for all frequencies larger than 20 KHz. All harmonics

have a maximum power of 40 milliwatts (mW) at the sender

Explanation / Answer

a) You have described a 20 kHz low pass filter.

b) All the harmonics go through the filter, but those above 20 kHz are attenuated.

c) 20 kHz.

d) The power attenuation is 5 dB per decade above 20 kHz

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.