Question
Download Solution PDFAM रेडिओ ग्राहीमध्ये, 1545 kHz च्या RF सिग्नलसाठी, स्थानीय दोली वारंवारतेचे मूल्य ______ असेल.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFयोग्य पर्याय 1 आहे.
संकल्पना:
fLO = स्थानीय दोली वारंवारता, ज्याची गणना खालीलप्रमाणे केली जाते:
fLO = fs + IF
f s = सिग्नलची मेलित वारंवारता
I IF = मध्य वारंवारता
हे खालील स्पेक्ट्रम विश्लेषणाच्या मदतीने स्पष्ट केले आहे:
गणना :
AM रेडिओ ग्राहीचा IF स्टेज सहसा 455 kHz ची मानक IF वारंवारता वापरतो.
fLO = fs + IF = 1545k + 455k
fLO = 2000 kHz
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