High Efficiency HBT Power Amplifier Utilizing Optimum Phase of Second Harmonic Source Impedance
A new type of source matching for improving the efficiency of an inverse Class-F (Class-F-1) amplifier is presented. The squared waveform voltage is generated by adjusting the phase of finite second harmonic voltage shift. To verify the superior performance of the proposed technique, two-stage HBT PAs with different types of source matching were fabricated using a commercial process. The proposed PA delivers approximately 4.8% improvement in efficiency over a conventional PA. The peak output power is enhanced by 2 dB.
- Issue Date
- 2015-11
- Language
- English
- Article Type
- Article
- Citation
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.25, no.11, pp.721 - 723
- ISSN
- 1531-1309
- Appears in Collection
- EE-Journal Papers(저널논문)
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