How does the inter-stage matching network of a narrowband LNA compare to that of a wideband LNA for the same multistage design? I've read somewhere that narrowband LNA does not necessarily require a matching network between the stages and can be ignored when the design consists just of identical single-stage design in cascade.
Shouldn't the matching network be necessary for matching the impedance of the stages? Or, does it serve another purpose?
Here is the link: Design, Analysis and Optimization of Multistage LNA at KU- Band.