Negative resistance generator, load including negative resistance and load of amplifier

摘要

A negative resistance generator is disclosed herein. The negative resistance generator includes a first signal end for receiving a first signal which includes first AC/DC components, a second signal end for receiving a second signal which includes second AC/DC components, first and second transistors, a power source circuit, a first and a second DC level setting circuits. The power source circuit is coupled to the first and second transistors. The first DC level setting circuit provides a second gate voltage for a second gate of the second transistor according to a first DC voltage and the first AC component. The second DC level setting circuit provides a first gate voltage for a first gate of the first transistor according to a second DC voltage and the second AC component. The second gate voltage and first gate voltage are lower than the voltages of the first and the second signal respectively.

主权项

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 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.