How to design an Integrator except using Op-Amp!!!
It's possible to construct an integrator using differential amplifier structure? The operating frequency of this integrator is up to 1-2GHz.
Thank You.
Realy I can't see what you mean. But the easier integrador is a Low-Pass Filter. Or a corrected centered band pass. Or do you need to integrate the power of the RF signal?
Try the same circuit topology as is used with resistors to get from differential to single ended gain. Start with the usual resistor to the inverting node and a capacitor from the inverting node to the output. Instead of grounding the noninverting node, run a resistor from it to the other circuit input and a capacitor from it to ground. Have both capacitors in the circuit the same value.
Op_amps can work at few MHz maximum.
1-2GHz No chanse.
Idea with Low pass filter is good.
You must be careful with parasit capacity on those frequencies.
Mr.Cube
There are several companies that make 1 GHz+ op amps. I heard of one at 5 GHz but I cannot find the company that makes them.
GBW of the OPAMPS are limited to 1GHz.But you can realize an opamp with discrete components. For instance a emitter follower with a current source and 2 transistor output stage with a current source that is biased with the same current source of follower.
It's not very difficult. If you use wideband transistors of Philips , ( or other brand ) it will be very nice Opamp up to 2-3 GHz. It's good to try..
The only point that should be pointed out that is stability. Others are classic.
If you can build it up with discretes , you can also use it as an integrator.
Is it all kinds of low pass filter can work as an integrator?
Best rgd.