RECEIVERS


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RECEIVERS
RECEIVERSMost radio receivers must perform multiple functions to produce the desired results. The antenna must receive the transmitted wave and produce a current flow into the antenna coupler. The antenna's current is produced through the process of electromagnetic induction. The tuner selects and passes only one frequency and blocks the others.One or more preamplifiers are used to amplify the weak signal received from the tuner. In some cases an amplifier is also connected directly to the antenna in order to receive extremely weak signals. Once the input signal is amplified sufficiently, the RF carrier wave is separated from the AF wave by a detector circuit. The AF wave is then amplified again and directed to the receiver output, typically a …
Citation
Thomas K. Eismin: Aircraft Electricity and Electronics, Sixth Edition. RECEIVERS, Chapter (McGraw-Hill Professional, 2014), AccessEngineering Export