Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers
This paper presents a theoretical analysis and derives the amplifier output noise power spectral density result in a closed form when the input to the amplifier is a band limited Gaussian noise. From the computed power spectral density the NPR is evaluated by a simple subtraction. The method can be...
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| Format: | Article |
| Language: | English |
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Wiley
2016-01-01
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| Series: | Journal of Applied Mathematics |
| Online Access: | http://dx.doi.org/10.1155/2016/8710860 |
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| _version_ | 1849405400601853952 |
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| author | Rajendra Kumar |
| author_facet | Rajendra Kumar |
| author_sort | Rajendra Kumar |
| collection | DOAJ |
| description | This paper presents a theoretical analysis and derives the amplifier output noise power spectral density result in a closed form when the input to the amplifier is a band limited Gaussian noise. From the computed power spectral density the NPR is evaluated by a simple subtraction. The method can be applied to any amplifier with known input-output characteristics. The method may be applied to analyze various other important characteristics of the nonlinear amplifier such as spectral regrowth that refers to the spreading of the signal bandwidth when a band limited signal is inputted to the nonlinear amplifier. The paper presents numerical results on the NPR as a function of the noise bandwidth, depth level of the notch, and the output power back-off obtained from the analysis presented in the paper. |
| format | Article |
| id | doaj-art-4e65e36ae9874c91b1d67fbaea372327 |
| institution | Kabale University |
| issn | 1110-757X 1687-0042 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Applied Mathematics |
| spelling | doaj-art-4e65e36ae9874c91b1d67fbaea3723272025-08-20T03:36:41ZengWileyJournal of Applied Mathematics1110-757X1687-00422016-01-01201610.1155/2016/87108608710860Theoretical Analysis of the Noise Power Ratio of Nonlinear Power AmplifiersRajendra Kumar0Department of Electrical Engineering, California State University, Long Beach, CA 90840, USAThis paper presents a theoretical analysis and derives the amplifier output noise power spectral density result in a closed form when the input to the amplifier is a band limited Gaussian noise. From the computed power spectral density the NPR is evaluated by a simple subtraction. The method can be applied to any amplifier with known input-output characteristics. The method may be applied to analyze various other important characteristics of the nonlinear amplifier such as spectral regrowth that refers to the spreading of the signal bandwidth when a band limited signal is inputted to the nonlinear amplifier. The paper presents numerical results on the NPR as a function of the noise bandwidth, depth level of the notch, and the output power back-off obtained from the analysis presented in the paper.http://dx.doi.org/10.1155/2016/8710860 |
| spellingShingle | Rajendra Kumar Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers Journal of Applied Mathematics |
| title | Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers |
| title_full | Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers |
| title_fullStr | Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers |
| title_full_unstemmed | Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers |
| title_short | Theoretical Analysis of the Noise Power Ratio of Nonlinear Power Amplifiers |
| title_sort | theoretical analysis of the noise power ratio of nonlinear power amplifiers |
| url | http://dx.doi.org/10.1155/2016/8710860 |
| work_keys_str_mv | AT rajendrakumar theoreticalanalysisofthenoisepowerratioofnonlinearpoweramplifiers |