Question
Download Solution PDFm=1 সহ একটি AM-এ, একটি সাইডব্যান্ডের শক্তি হল:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFসঠিক বিকল্প হল 1
ধারণা:
একটি প্রেরিত AM তরঙ্গের শক্তি দেওয়া হয়:
\(P_t = {P_c}\left( {1 + \frac{{{μ ^2}}}{2}} \right)\)
\(P_t = {P_c} + P_c\frac{μ ^2}{2}\)
বাহকের শক্তি = P c
উভয় সাইডব্যান্ডের শক্তি দ্বারা দেওয়া হয়:
\(P_s= frac{{P_c}{μ^2}}}{2}\)
যেহেতু পাওয়ারটি সাইডব্যান্ডের বাম এবং ডানদিকে সমানভাবে বিতরণ করা হয়, তাই সাইডব্যান্ডগুলির একটিতে শক্তি দেওয়া হয়:
\(P_{s1}= \frac{{{P_c}{u^2}}}{4}\) ............(1)
ব্যাখ্যা:
প্রদত্ত মডুলেশন সূচক হল 1
আমাদের সমীকরণ 1 এ মড্যুলেশন সূচক =1 রাখছি
\(P_{s1}= \frac{{{P_c}{1^2}}}{4} = \frac{{{P_c}{}}}{4}\)
তাই সাইডব্যান্ডের শক্তি মোট শক্তির এক-চতুর্থাংশ।
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