POWER OSCILLATOR USING GaN POWER AMPLIFIER
AssigneeWavepia Co., Ltd.
InventorSang-Hun LEE
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Abstract
A power oscillator using a GaN power amplifier, includes: the GaN power amplifier configured of a gallium nitride (GaN) element to amplify and output power of an input signal; a directional coupler for providing part of an output signal of the GaN power amplifier as a feedback signal; a phase shifter for changing a phase of the feedback signal provided by the directional coupler; and a first isolator for adjusting impedance mismatching generated by the phase shifter and transferring the feedback signal to the GaN power amplifier.
Claims6
A power oscillator using a GaN power amplifier, the power oscillator comprising:
- The GaN power amplifier configured of a gallium nitride (GaN) element to amplify and output power of an input signal;
- A directional coupler for providing part of an output signal of the GaN power amplifier as a feedback signal;
- A phase shifter for changing a phase of the feedback signal provided by the directional coupler;
- and
- a first isolator for adjusting impedance mismatching generated by the phase shifter and transferring the feedback signal to the GaN power amplifier.
A power oscillator using a GaN power amplifier, the power oscillator comprising:
- a first GaN power amplifier configured of a gallium nitride (GaN) element to amplify and output power of an input signal;
- a second GaN power amplifier configured of a gallium nitride (GaN) element and connected to the first GaN power amplifier in parallel to amplify and output power of an input signal;
- a power combiner for combining signals amplified and outputted by the first GaN power amplifier and the second GaN power amplifier;
- a directional coupler for providing part of the signal transferred by the power combiner as a feedback signal;
- a phase shifter for changing a phase of the feedback signal provided by the directional coupler;
- a first isolator for adjusting impedance mismatching generated by the phase shifter;
- and
- a power splitter for splitting the feedback signal transferred through the first isolator and transferring the split feedback signals to the first GaN power amplifier and the second GaN power amplifier.
Dependencies are inferred from the claim text.