Patent ID: 8324971

Claim:
A bias network for field effect transistors comprising: a field effect transistor, the field effect transistor having an internal gate-diode, a source electrode connected to ground and a drain electrode connected to a load; a radio frequency network connected to the gate electrode of the field effect transistor; a gate bias network connected to the gate electrode of the field effect transistor; and a device having a non-linear characteristic provided in series between the gate electrode of the field effect transistor and the gate bias network, the radio frequency network and the gate bias network are connected to the gate electrode of the field effect transistor via a gate bias-T device comprising a capacitor and wherein the device having non-linear characteristic is provided between the gate bias-T device and the gate bias network, and further wherein the device having a non-liner characteristic is arranged such that a negative current passes through the device but a positive current is blocked or reduced.