winglj
Full Member level 4
if the PA output is 1 W, with 50 Ohm matching, how can I determine the RF current at output and the corresponding co-planar waveguide (CPW) trace width?
This is my calculation:
Maximum current: Imax=sqrt[1W/50ohm]*sqrt(2)=200mA.
But do I need to consider the skin effect for the RF signal? If yes, how can I determine the minimum trace width of the CPW that can sufficiently handle such high RF current?
This is my calculation:
Maximum current: Imax=sqrt[1W/50ohm]*sqrt(2)=200mA.
But do I need to consider the skin effect for the RF signal? If yes, how can I determine the minimum trace width of the CPW that can sufficiently handle such high RF current?