jesuschrist
Member level 4
Hell everyone. I've been designing a 3-stage LNA for 2.4 GHz and today I tested the LNA but for some reason when I connect the LNA to voltage source it voltage supply drops from 4V(correct value) to 2.7V.
Then i used seperate voltage sources for 3 seperate stages and it seems the second stage voltage is dropping down. All the stages are equal hence i cascaded them , not a single thing is different from the other stages. So does anyone have an idea about the cause of the problem ? I checked the resistors that divides the voltage and they are fine. Could it be the dc block capacitor is not working between the first and second stage ?
Then i used seperate voltage sources for 3 seperate stages and it seems the second stage voltage is dropping down. All the stages are equal hence i cascaded them , not a single thing is different from the other stages. So does anyone have an idea about the cause of the problem ? I checked the resistors that divides the voltage and they are fine. Could it be the dc block capacitor is not working between the first and second stage ?