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The modem must control ____ to produce the desired carrier frequency.(a) filter(b) low noise amplifier(c) power amplifier(d) antenna-matching unitThe question was asked in examination.Enquiry is from Hardware Architecture in chapter Software Defined Radio Architecture of Cognitive Radio

Answer»

Correct answer is (c) power amplifier

The best explanation: The MODEM controls external RF ELEMENTS, including transmit and RECEIVE mode, carrier frequency and SMART antenna. The modem controls power amplifier and local OSCILLATORS to produce the desire carrier frequency.



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