I am simulating a 3 transistor based XNOR cell using HSPICE. The circuit is shown in the picture.
In the case of A=1 and B=1, the output is charged through the N1 transistor. You know NMOS passes the Vs=Vdd to its drain as Vdd-Vth. The problem is when Vth>Vdd/2, the drain voltage becomes less than Vdd/2 and it is assumed as approximately zero, while the desired output is Vdd. So, if I connect this output to the gate of a PMOS, it will be turned on, which is not the desired case.
I want to amplify this output using few transistor and no resistances, just the case A=1 and B=1, to become close to Vdd. How is it possible to amplify this output?