Patent ID: 9287860
Filing Date: 2016-03-15
CPC Classification: H03H,H03K

Claim Text:
1. A negative resistance generator, comprising: a first signal end, operable to receive a first signal including a first AC (alternating current) component and a first DC (direct current) component; a second signal end, operable to receive a second signal including a second AC component and a second DC component; a first transistor, including a first high voltage-level electrode, a first low voltage-level electrode and a first gate, in which the first high voltage-level electrode connects with the first signal end; a second transistor, including a second high voltage-level electrode, a second low voltage-level electrode and a second gate, in which the second high voltage-level electrode connects with the second signal end; a power source circuit, one end of the power source circuit coupled with the first and second low voltage-level electrodes, and another end of the power source circuit coupled with a voltage end; a first DC level setting circuit, coupled between the first signal end and the second gate, operable to provide a second gate voltage for the second gate according to a first DC voltage and the first AC component, in which the second gate voltage is lower than the voltage of the first signal and the first DC level setting circuit comprises: a second DC level setting circuit, coupled between the second signal end and the first gate, operable to provide a first gate voltage for the first gate according to a second DC voltage and the second AC component, in which the first gate voltage is lower than the voltage of the second signal and the second DC level setting circuit comprises: wherein the first gate voltage is equal to the voltage of the second signal subtracting the second DC voltage, and the second gate voltage is equal to the voltage of the first signal subtracting the first DC voltage.