As discussed in Parts 1 & 2 of this FAQ series, RF transformers are complex devices and include parasitic resistances, inductances, and capacitances, which are non-linear and complex effects that compromise performance. Several fabrication methods including core-and-wire, low-temperature cofired ceramics (LTCC), and transmission line topologies have been developed to mitigate the impact of the various […]
RF transformer fabrication – Making the best of a non-ideal situation
As discussed in part 1 of this series, physical RF transformers are non-ideal devices and include parasitic resistances, inductances, and capacitances, which are non-linear and complex effects that compromise performance. Several fabrication methods have been developed to mitigate the impact of the various parasitics and help to optimize RF transformer characteristics for the needs of […]
Dealing with non-ideal transformers – Basic RF transformer theory of operation
When current goes through the primary winding of a theoretical (ideal) transformer, it generates a magnetic field which induces a voltage across the secondary winding. Connecting a load to the secondary causes an AC current to flow in the load. However, a physical transformer is far from ideal and includes parasitic resistances, inductances, and capacitances, […]