Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm
In order to keep the adaptive digital predistortion algorithms valid,usually the output power level of the TWTA must be reduced,which corresponded a reduced efficiency of the TWTA.A predistortion technique was proposed by combining RF predistortion linearizer with adaptive digital predistortion algo...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2012-07-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)07-0158-06/ |
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| _version_ | 1841539909184126976 |
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| author | Xin HU Gang WNAG Zi-cheng WANG Ji-run LUO |
| author_facet | Xin HU Gang WNAG Zi-cheng WANG Ji-run LUO |
| author_sort | Xin HU |
| collection | DOAJ |
| description | In order to keep the adaptive digital predistortion algorithms valid,usually the output power level of the TWTA must be reduced,which corresponded a reduced efficiency of the TWTA.A predistortion technique was proposed by combining RF predistortion linearizer with adaptive digital predistortion algorithm.The gain and phase change of the TWTA with a RF predistortion linearizer circuit from small-signal input drive to saturated input drive were improved,respectively.Then the adaptive digital predistortion algorithm was used for the TWTA with the RF predistortion linearizer.The good linearity improvement can be reached with the less reduction for the output power level with this method. |
| format | Article |
| id | doaj-art-871f8d971e184deb96d2fe3939a2b6ea |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2012-07-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-871f8d971e184deb96d2fe3939a2b6ea2025-01-14T06:32:27ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2012-07-013315816359663738Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithmXin HUGang WNAGZi-cheng WANGJi-run LUOIn order to keep the adaptive digital predistortion algorithms valid,usually the output power level of the TWTA must be reduced,which corresponded a reduced efficiency of the TWTA.A predistortion technique was proposed by combining RF predistortion linearizer with adaptive digital predistortion algorithm.The gain and phase change of the TWTA with a RF predistortion linearizer circuit from small-signal input drive to saturated input drive were improved,respectively.Then the adaptive digital predistortion algorithm was used for the TWTA with the RF predistortion linearizer.The good linearity improvement can be reached with the less reduction for the output power level with this method.http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)07-0158-06/TWTAnonlinear distortiondigital predistortionRF predistortion |
| spellingShingle | Xin HU Gang WNAG Zi-cheng WANG Ji-run LUO Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm Tongxin xuebao TWTA nonlinear distortion digital predistortion RF predistortion |
| title | Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm |
| title_full | Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm |
| title_fullStr | Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm |
| title_full_unstemmed | Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm |
| title_short | Effect on the linearity improvement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm |
| title_sort | effect on the linearity improvement of twta by combining rf predistortion linearizer and digital predistortion algorithm |
| topic | TWTA nonlinear distortion digital predistortion RF predistortion |
| url | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)07-0158-06/ |
| work_keys_str_mv | AT xinhu effectonthelinearityimprovementoftwtabycombiningrfpredistortionlinearizeranddigitalpredistortionalgorithm AT gangwnag effectonthelinearityimprovementoftwtabycombiningrfpredistortionlinearizeranddigitalpredistortionalgorithm AT zichengwang effectonthelinearityimprovementoftwtabycombiningrfpredistortionlinearizeranddigitalpredistortionalgorithm AT jirunluo effectonthelinearityimprovementoftwtabycombiningrfpredistortionlinearizeranddigitalpredistortionalgorithm |