I have a common base amplifier with a source resistance and a load resistor. I am trying to solve for the system gain including the source resistor with both the hybrid-pi and T model but seem to be getting different answers.
When solving the hybrid-pi model for Vbe by looking at the currents at the emitter I end up with an extra gm term due to the voltage controlled current source. I do not get this term when I solve for the same circuit with the T-model. Any help? Its probably something simple I am missing.