A frequency modulation (FM) receiver has a post-discriminator bandwidth of 15kHz and is designed to operate with carrier

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A frequency modulation (FM) receiver has a post-discriminator bandwidth of 15kHz and is designed to operate with carrier

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A Frequency Modulation Fm Receiver Has A Post Discriminator Bandwidth Of 15khz And Is Designed To Operate With Carrier 1
A Frequency Modulation Fm Receiver Has A Post Discriminator Bandwidth Of 15khz And Is Designed To Operate With Carrier 1 (82.57 KiB) Viewed 37 times
A frequency modulation (FM) receiver has a post-discriminator bandwidth of 15kHz and is designed to operate with carrier deviations of up to 85kHz. Calculate the discriminator output signal-to-noise ratio (SNR) when an FM signal transmitting a 10kHz tone with a deviation of 75kHz produces a carrier-tonoise ratio of 45 dB at the discriminator input. What would be the corresponding output SNR if the amplitude of the 10kHz tone was reduced by 10 dB ? [9 Marks] It may be assumed for an FM discriminator: SNRout ​=2ηfo​3Sc​​{fo​Δfc​​}2 where Δfc​ is the carrier deviation Sc​ is the average carrier power fo​ is the maximum baseband response η is the noise power spectral density but any other assumptions made should be clearly stated.
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