alexa Modeling and Performance Evaluation of a Superheterodyne Receiver
ISSN ONLINE(2278-8875) PRINT (2320-3765)

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering
Open Access

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Research Article

Modeling and Performance Evaluation of a Superheterodyne Receiver

Ezeagwu C.O, Ufoaroh S.U, Nnebe S.U, Nwalozie Gerald.C
Lecturer, Dept of ECE, Nnamdi Azikiwe University, Awka Anambra State, Nigeria
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Abstract

There have been high rate of interference between radio stations due to the recent increase in the number of radio stations. This interference leads to poor sound quality of a simple AM/FM receiver. Research has shown that the use of wrong component and poor ICs are the causes of this interference and other drawbacks of a receiver system. These drawbacks include but not limited to cross modulation, local oscillator radiation and blocking. This research work models and evaluates a highly integrated FM/AM radio single-chip receiver optimized for low power consumption and minimum external components, with the operating frequency of 88 MHz - 108 MHz and 550kHz -1600 kHz which covered the standard FM and AM bands respectively. The single-chip receiver also eliminates the drawbacks of the regular receivers, with good selectivity, sensitivity, proper inter-modulation (IM) rejection and audio amplifier. Multisim software is used for the circuit design and performance evaluation of the proposed receiver.

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