High-efficiency power amplification apparatus using saturated operation and method for controlling the same
AssigneesSamsung Electronics Co., Ltd., Postech Academy-Industry Foundation
InventorsYoung-Yun Woo, Bum-Man Kim, Jang-Heon Kim, Cheol-Soo Seo, Jung-Hwan Moon, Jung-Joon Kim
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Abstract
A saturated power amplification apparatus and a method for controlling the same are provided, in which a power device is provided, and an output matcher matches a load impedance of the power device. The load impedance is a complex impedance exceeding an impedance generated during power matching in the saturated power amplification apparatus.
Claims18
A saturated power amplification apparatus comprising:
- a power device;
- and
- an output matcher configured to match a load impedance of the power device,
- wherein the load impedance is a complex impedance exceeding an impedance generated during power matching in the saturated power amplification apparatus, and
- wherein a phase of the complex impedance is determined so that the saturated power amplification apparatus can operate in both linear and knee regions on a DC I-V characteristic curve.
A method for controlling a saturated power amplification apparatus comprising:
- matching a load impedance of a power device,
- wherein the load impedance is a complex impedance exceeding an impedance generated during power matching in the saturated power amplification apparatus, and
- wherein a phase of the complex impedance is determined so that the saturated power amplification apparatus can operate in both linear and knee regions on a DC I-V characteristic curve.
A saturated power amplification apparatus comprising:
- a power device having a current source and an output capacitor;
- and
- an output matcher configured to match a load impedance of the power device,
- wherein the load impedance is a complex impedance exceeding an impedance generated during power matching in the saturated power amplification apparatus, and
- wherein a phase of the complex impedance is determined so that a phase difference between a second harmonic voltage generated through the output capacitor and a fundamental-frequency voltage generated by the complex impedance is a predetermined angle.
A method for controlling a saturated power amplification apparatus comprising:
- matching a load impedance of a power device,
- wherein the load impedance is a complex impedance exceeding an impedance generated during power matching in the saturated power amplification apparatus, and
- wherein when the power device includes a current source and an output capacitor, a phase of the complex impedance is determined so that a phase difference between a second harmonic voltage generated through the output capacitor and a fundamental-frequency voltage generated by the complex impedance is a predetermined angle.
Dependencies are inferred from the claim text.