Swing of the I and Q signals for passive mixer

please tell about the swing of the I an Q signals from oscillator good enough for 2.4 GHz application

Typically a large swing is required compare to a gilbert cell type mixer. Like me, i typically use swing as large as possible without burning too much power on the LO buffer and without introducing too much harmonics. Also, you have to make sure that it passes relibalility that swing across all terminals do not over the limits