EMfox
Newbie level 6
what make clamping circuit
I am working on a RFID front-end. The very first component is the clamp circuit that limits the RF input to a modest range. However, this simple clamp circuit (see figure) wouldn't work. The reason is that if the input signal is a 50% modulated ASK signal, at high power level, the output of this clamp circuit is always high. I tried to find reference papers on IEEE, but it looks that there are not many about this circuit block. Would anybody suggest anything? Thanks!
I am working on a RFID front-end. The very first component is the clamp circuit that limits the RF input to a modest range. However, this simple clamp circuit (see figure) wouldn't work. The reason is that if the input signal is a 50% modulated ASK signal, at high power level, the output of this clamp circuit is always high. I tried to find reference papers on IEEE, but it looks that there are not many about this circuit block. Would anybody suggest anything? Thanks!
