Alternative Biasing Techniques for Inductive Source Degeneration LNA with Chebyshev BPF

Hi,
As my understanding on biasing circuit, biasing circuit is used to provide certain voltage level to make sure the amplifier is operated in desired region (eg. saturated region). The question raised when I'm designing an inductive source degeneration LNA with Chebyshev bandpass filter as input matching network. The biasing voltage, Vbias1 is connected through the inductor in bandpass filter as shown in the attached.I've tried current mirror configuration as a biasing circuit to bias the amplifier, but looks like the biasing circuit is treated as part of input matching, the s-parameter is affected. As what I found on other papers, the researchers just connected the voltage supply without biasing circuit. 
Instead of connecting the bias voltage directly to the inductor, is there any other biasing technique without affecting the s-parameter?

You need to connect a bypass capacitor between Vbias1 and ground. The capacitance and lead-inductance of the capacitor will affect your s-parameter model, and will mask the effect of the biasing circuit. An appropriate choice of capacitor will have small effect on your s-parameter model. The attached drawing is missing from your post.