inass57
Member level 2
Hi guys!
I've designed a simple common emitter LNA at 10GHz, i ve used it in many CW applications with no major problems. However i tried to amplify a 4us pulse (a cosine of constant magnitude) and i notice a pulse distortion when the LNA is saturated, where the signal magnitude is higher at the begining of the pulse and it keeps dropping for 500~1000ns, until it reaches a constant magnitude for the rest of the pulse, i tried filtering the harmonics and while this helps a little bit the distortion is still present. have any way of you encountred the same problem? or have an idea wht it might be?
Thank you in advance. I can provide the schematic/Layout of the LNA if required.
I've designed a simple common emitter LNA at 10GHz, i ve used it in many CW applications with no major problems. However i tried to amplify a 4us pulse (a cosine of constant magnitude) and i notice a pulse distortion when the LNA is saturated, where the signal magnitude is higher at the begining of the pulse and it keeps dropping for 500~1000ns, until it reaches a constant magnitude for the rest of the pulse, i tried filtering the harmonics and while this helps a little bit the distortion is still present. have any way of you encountred the same problem? or have an idea wht it might be?
Thank you in advance. I can provide the schematic/Layout of the LNA if required.