Small signal RF amplifier schematic . Is this a good schematic?

Thread Starter

Zeno53

Joined Sep 23, 2020
2
Hi guys, I have created this circuit with several AD8099s in series. According to the simulator in Proteus with 100uV of input signal I can reach 1Volt output with a bandwidth of absolute respect. The only problem is that in simulation with an input signal of 1Ghz the signal is out of phase. What do you think? Is it a limitation in the simulation or is there something to improve on the circuit? Thank you all.

Schematic

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Thread Starter

Zeno53

Joined Sep 23, 2020
2
@bertus Yes, I know it will be low and will likely gain very little or nothing at 1Ghz. The problem is to find an Amp that amplifies very low signals (10 / 100uV) with good bandwidth. There are OpAmp that amplify even weaker signals but do not go up in frequency. But would the series configuration as in the circuit work? Thanks.
 
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