The superheterodyne receiver is the most common configuration for radio communications. Its basic principle of operation is the translation of all received channels into an intermediate frequency (IF) band where weak input signals are amplified before being applied to a detecto
Heterodyne and superheterodyne principles:
A superheterodyne receiver combines amplification with frequency mixing and is the most popular architecture for a microwave receiver. Heterodyne means mixing two signals of different frequencies together, resulting in a "beat" frequency.
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