Design choices

AN4016

4/17

Doc ID 022523 Rev 1

Therefore, a compact design can be realized: only one RF output matching network, with

one impedance transformer T2, and an RF input matching network that supports the phase

and amplitude signals on each of the two gates STAC4932B (electrical symmetry).

The schematic incorporates the necessary input / output biasing networks for proper feed

biasing on the gates and drains.

Finally, planar microstrip technology was the main choice for the design of RF circuits: in

particular, the design of transformers T1 and T2 is fully embedded into the substrate (PCB)

itself as RF planar structures, and allows easy assembly of the design.