I ran in to this picture of a pcb in a datasheet. It was just weird for me to see this metal pattern on the top layer. Any thoughts on why this exists?
How can you tune the matching circuit? The copper squares surround the microstrip, and are not tunable.
Could it be a metal filling rule? something like on-chip design rules?
How can you tune the matching circuit? The copper squares surround the microstrip, and are not tunable.
Could it be a metal filling rule? something like on-chip design rules?
They are just to connect a SMD component where the matching is proper.The designer may make a fine tuning to shift left and right the matching component.
There are also stub optional pads around it.They are for to tune the length of the stub too..