Question
Download Solution PDFFor a Citizens band receiver using high-side injection with an RF carrier of 27 MHz and an IF center frequency of 455 kHz, what is the image frequency?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Image frequency: The signal which causes interference is called 'image frequency'.
Image frequency and intermediate frequency are related as follows:
\(f_{si}=f_s+2 \space IF\)
fs = Carrier frequency
fsi = Image frequency
IF = Intermediate frequency
Calculation:
Given, fs = 27 MHz
IF = 455 kHz = 0.455 MHz
\(f_{si}=27 + 2(0.455)\)
fsi = 27.91 MHz
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