STM32F407VG Programming Circuit.

Actually i am working on Digital predistortion of power amplifiers, need a fast feedback to respond to the power amplifier to linearize the output gain of power amplifiers and also have to control 10 to 15 analog sensors.

Actually i am working on Digital predistortion of power amplifiers, need a fast feedback to respond to the power amplifier to linearize the output gain of power amplifiers and also have to control 10 to 15 analog sensors.

ishi

Yes I thought it must be something like that
Is that 10 to 15 per channel ?
It may be easier to use several slower micros than one *very* fast one.

Have you got the high speed ADCs, what are they ?

actually this project is more complex, from stm32 i am generating fast sweep (of 500MHz bandwidth in less than time period of 1ms) also controlling the linearity of RF amplifier, the RF amplifier response time is more then 300MHz, so using slower micro-controller will not suitable for it even i use multiple.

and also if you suggest some 90 degree phase shifters IC of 1GHz, a all-pass filter can do this kind of stuff but i am not good in filter designing.

actually this project is more complex, from stm32 i am generating fast sweep (of 500MHz bandwidth in less than time period of 1ms) also controlling the linearity of RF amplifier, the RF amplifier response time is more then 300MHz, so using slower micro-controller will not suitable for it even i use multiple.

and also if you suggest some 90 degree phase shifters IC of 1GHz, a all-pass filter can do this kind of stuff but i am not good in filter designing.

ishi

I think you need a specialist Radio website.

I pretty sure none of the mods here, including Ajay, know much about
1GHz, all-pass filters
Frankly I don't understand what you are doing well enough to give advice.

Thanks ExperimenterUK for your kind reply