A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers
This work presents a comprehensive theoretical analysis of current-mode power amplifiers as a function of input power for different biasing classes under the common simplifying assumption of constant transconductance and hard current cut-off/saturation. Typically, the theoretical analysis of power a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/21/7042 |
| _version_ | 1797512541121806336 |
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| author | Chiara Ramella Paolo Colantonio Marco Pirola |
| author_facet | Chiara Ramella Paolo Colantonio Marco Pirola |
| author_sort | Chiara Ramella |
| collection | DOAJ |
| description | This work presents a comprehensive theoretical analysis of current-mode power amplifiers as a function of input power for different biasing classes under the common simplifying assumption of constant transconductance and hard current cut-off/saturation. Typically, the theoretical analysis of power amplifier performance and behavior are carried out only at maximum output power. However, to achieve high data-rates, modern telecommunication systems adopt signals characterized by a very high peak-to-average power ratio, thus it is useful to analyze the power amplifier behavior as a function of power back-off. Moreover, in many cases, to enhance the efficiency and/or to apply harmonic shaping techniques, a clipped drain-source current, which approaches a square wave, is required. The classical analysis can be extended to low power levels only under the assumption of power-independent conduction angle, which is true only for class-A and class-B amplifiers, and does not take into account possible waveform clipping at maximum current. This work presents a complete theoretical Fourier analysis of FET-based power amplifiers as a function of quiescent drain-source current at any input power level and accounting for the clipped current case, up to the square-wave limit, reorganizing and completing the material that can be found in classical textbooks in the field. |
| first_indexed | 2024-03-10T06:03:15Z |
| format | Article |
| id | doaj.art-02d25e2271de47adaa2693fda1a7566c |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T06:03:15Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-02d25e2271de47adaa2693fda1a7566c2023-11-22T20:42:41ZengMDPI AGEnergies1996-10732021-10-011421704210.3390/en14217042A Comprehensive Harmonic Analysis of Current-Mode Power AmplifiersChiara Ramella0Paolo Colantonio1Marco Pirola2Department of Electronics and Telecommunications, Politecnico di Torino, 10129 Turin, ItalyMicrowave Engineering Center for Space Applications (MECSA), 00133 Rome, ItalyDepartment of Electronics and Telecommunications, Politecnico di Torino, 10129 Turin, ItalyThis work presents a comprehensive theoretical analysis of current-mode power amplifiers as a function of input power for different biasing classes under the common simplifying assumption of constant transconductance and hard current cut-off/saturation. Typically, the theoretical analysis of power amplifier performance and behavior are carried out only at maximum output power. However, to achieve high data-rates, modern telecommunication systems adopt signals characterized by a very high peak-to-average power ratio, thus it is useful to analyze the power amplifier behavior as a function of power back-off. Moreover, in many cases, to enhance the efficiency and/or to apply harmonic shaping techniques, a clipped drain-source current, which approaches a square wave, is required. The classical analysis can be extended to low power levels only under the assumption of power-independent conduction angle, which is true only for class-A and class-B amplifiers, and does not take into account possible waveform clipping at maximum current. This work presents a complete theoretical Fourier analysis of FET-based power amplifiers as a function of quiescent drain-source current at any input power level and accounting for the clipped current case, up to the square-wave limit, reorganizing and completing the material that can be found in classical textbooks in the field.https://www.mdpi.com/1996-1073/14/21/7042high-frequency power amplifierscurrent-mode power amplifiersharmonic analysis |
| spellingShingle | Chiara Ramella Paolo Colantonio Marco Pirola A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers Energies high-frequency power amplifiers current-mode power amplifiers harmonic analysis |
| title | A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers |
| title_full | A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers |
| title_fullStr | A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers |
| title_full_unstemmed | A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers |
| title_short | A Comprehensive Harmonic Analysis of Current-Mode Power Amplifiers |
| title_sort | comprehensive harmonic analysis of current mode power amplifiers |
| topic | high-frequency power amplifiers current-mode power amplifiers harmonic analysis |
| url | https://www.mdpi.com/1996-1073/14/21/7042 |
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