When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not?
This paper tries to get a response to the following question: When can a narrowband power amplifier (PA) be considered to be memoryless and when can it not be considered memoryless? To this end, a thorough and consistent analysis of the notions and definitions related with the above topic is carried...
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2018-05-01
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| Series: | International Journal of Electronics and Telecommunications |
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| Online Access: | https://journals.pan.pl/Content/103873/PDF/34_1303-4321-1-PB.pdf |
| _version_ | 1798040737662631936 |
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| author | Andrzej Borys |
| author_facet | Andrzej Borys |
| author_sort | Andrzej Borys |
| collection | DOAJ |
| description | This paper tries to get a response to the following question: When can a narrowband power amplifier (PA) be considered to be memoryless and when can it not be considered memoryless? To this end, a thorough and consistent analysis of the notions and definitions related with the above topic is carried out. In the considerations presented, two models of the narrowband PA are exploited interchangeably: the black box model widely used in the literature and a model developed here, which is based on the Volterra series. These two models complement each other. In this paper, the conditions for a linear or nonlinear narrowband PA to be memoryless or approximately memoryless or possessing memory are derived and illustrated. They are formulated in terms of the signal delay as well as in terms of the amplitude-to-phase (AM/PM) conversion of the amplifier. Furthermore, the two possible interpretations of the amplitude-to-amplitude (AM/AM) and AM/PM conversions are given a mathematical framework. That is these conversions are presented through some operations. One set of these operations allows to treat the AM/AM and AM/PM conversions as distortions of the modulating signals. Or equivalently as distortions of a given signal constellation when it passes through the PA. Finally, it is proved that the Saleh’s and Ghorbani’s models of the AM/AM and AM/PM conversions occurring in the PAs, which were published in the literature, are not memoryless ones. |
| first_indexed | 2024-04-11T22:11:42Z |
| format | Article |
| id | doaj.art-5c7ccafc42d24ee9ab1827572725dbd0 |
| institution | Directory Open Access Journal |
| issn | 2081-8491 2300-1933 |
| language | English |
| last_indexed | 2024-04-11T22:11:42Z |
| publishDate | 2018-05-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | International Journal of Electronics and Telecommunications |
| spelling | doaj.art-5c7ccafc42d24ee9ab1827572725dbd02022-12-22T04:00:32ZengPolish Academy of SciencesInternational Journal of Electronics and Telecommunications2081-84912300-19332018-05-01vol. 64No 2https://doi.org/10.24425/119393When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not?Andrzej BorysThis paper tries to get a response to the following question: When can a narrowband power amplifier (PA) be considered to be memoryless and when can it not be considered memoryless? To this end, a thorough and consistent analysis of the notions and definitions related with the above topic is carried out. In the considerations presented, two models of the narrowband PA are exploited interchangeably: the black box model widely used in the literature and a model developed here, which is based on the Volterra series. These two models complement each other. In this paper, the conditions for a linear or nonlinear narrowband PA to be memoryless or approximately memoryless or possessing memory are derived and illustrated. They are formulated in terms of the signal delay as well as in terms of the amplitude-to-phase (AM/PM) conversion of the amplifier. Furthermore, the two possible interpretations of the amplitude-to-amplitude (AM/AM) and AM/PM conversions are given a mathematical framework. That is these conversions are presented through some operations. One set of these operations allows to treat the AM/AM and AM/PM conversions as distortions of the modulating signals. Or equivalently as distortions of a given signal constellation when it passes through the PA. Finally, it is proved that the Saleh’s and Ghorbani’s models of the AM/AM and AM/PM conversions occurring in the PAs, which were published in the literature, are not memoryless ones.https://journals.pan.pl/Content/103873/PDF/34_1303-4321-1-PB.pdfnarrowband power amplifiers (pas)modelling memory in pasconditions for pa to be memoryless |
| spellingShingle | Andrzej Borys When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not? International Journal of Electronics and Telecommunications narrowband power amplifiers (pas) modelling memory in pas conditions for pa to be memoryless |
| title | When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not? |
| title_full | When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not? |
| title_fullStr | When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not? |
| title_full_unstemmed | When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not? |
| title_short | When Can a Narrowband Power Amplifier BeConsidered to Be Memoryless and when Not? |
| title_sort | when can a narrowband power amplifier beconsidered to be memoryless and when not |
| topic | narrowband power amplifiers (pas) modelling memory in pas conditions for pa to be memoryless |
| url | https://journals.pan.pl/Content/103873/PDF/34_1303-4321-1-PB.pdf |
| work_keys_str_mv | AT andrzejborys whencananarrowbandpoweramplifierbeconsideredtobememorylessandwhennot |