The RF signal and the DC current supplying the amplifier use the cable simultaneously. Check another FM antenna booster circuit diagram. The RF signal is however prevented by LC filters from flowing ...

Figure 2 A signal and noise diagram for the measuring system of Fig ... demodulators were analog and were built with a switched, +1/-1 gain amplifier combination. One possible circuit is shown in ...

Gain in this basic inverting amplifier is equal to R2 over R1 (G=R2/R1) so the last option is the correct one. Since the example circuit is direct coupled for amplification of a small AC signal, we ...

In a balanced op-amp circuit, the op-amp inputs see equal impedances looking into the circuit. Balanced circuits provide better performance by cancelling some input errors and have a simple R F /R ...