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Radio Wave Calculations & SNR

A radio wave with a frequency of 450 kHz has a wavelength of 666.66 meters. A signal with a period of 0.1057 seconds has a frequency of 9.46 Hz. A signal of 5 volts corrupted by 7 mV rms of noise has a signal-to-noise ratio of 142.85 dB.

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Jeremeh Pande
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1K views1 page

Radio Wave Calculations & SNR

A radio wave with a frequency of 450 kHz has a wavelength of 666.66 meters. A signal with a period of 0.1057 seconds has a frequency of 9.46 Hz. A signal of 5 volts corrupted by 7 mV rms of noise has a signal-to-noise ratio of 142.85 dB.

Uploaded by

Jeremeh Pande
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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1. What is the wavelength of a radio wave with a given frequency of 450 kHz?

c 3 ×10 8 m/s
λ= = =666.66 m
f 450 kHz
2. What would be the frequency of a signal with a period of 0.1057?

1 1
f= = =9.46 Hz
T 0.1057
3. A signal of 5 volts is corrupted by 7 mV rms of noise in a circuit. What is the S/N at this point?

SNR=20 log 10 ( VV ns )=20 log10( 0.007


5
)=142.85 dB

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