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Analog Receivers - TikZ Figures

TRF receiver: antenna cascaded tuned RF amplifiers envelope detector AF amplifier speaker; all resonators track together
Fig: TRF receiver: antenna cascaded tuned RF amplifiers envelope detector AF amplifier speaker; all resonators track together
Superheterodyne receiver: antenna RF amp mixer (fed by the local oscillator) fixed-IF amp detector AF amp speaker, with AGC feedback to the RF/IF stages
Fig: Superheterodyne receiver: antenna RF amp mixer (fed by the local oscillator) fixed-IF amp detector AF amp speaker, with AGC feedback to the RF/IF stages
Mixer frequency conversion: f_RF and f_LO in; the IF filter selects the difference f_IF=f_RF-f_LO and discards the sum
Fig: Mixer frequency conversion: f_RF and f_LO in; the IF filter selects the difference f_IF=f_RF-f_LO and discards the sum
Superheterodyne FM receiver: RF amp mixer/LO IF amp limiter discriminator de-emphasis AF amp speaker; a slow discriminator error feeds AFC back to the LO
Fig: Superheterodyne FM receiver: RF amp mixer/LO IF amp limiter discriminator de-emphasis AF amp speaker; a slow discriminator error feeds AFC back to the LO