Linearizability of TWTAs using predistortion techniques
Predistortion linearization is a very effective technique for improving the linearity and efficiency of traveling wave tube (TWT) amplifiers. In this paper, we will study the effectiveness of predistortion techniques for TWT linearization using single-tone, two-tone, and quadrature-amplitude-modulat...
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| Veröffentlicht in: | IEEE transactions on electron devices 2005-05, Vol.52 (5), p.718-727 |
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| container_title | IEEE transactions on electron devices |
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| creator | Qiu, J.X. Abe, D.K. Antonsen, T.M. Danly, B.G. Levush, B. Myers, R.E. |
| description | Predistortion linearization is a very effective technique for improving the linearity and efficiency of traveling wave tube (TWT) amplifiers. In this paper, we will study the effectiveness of predistortion techniques for TWT linearization using single-tone, two-tone, and quadrature-amplitude-modulation signals. The results from a series of predistortion linearization experiments for five TWTs covering L-, C-, Ku-, and Ka-bands and including both helix- and coupled-cavity TWTs will be presented. We will demonstrate the additional improvement of fifth-order predistortion linearization over the more commonly used third-order predistortion linearization. To circumvent the complexity and limited availability of a pure fifth-order linearizer, a technique for realizing nonlinear functions of order greater than or equal to five using cascaded third-order nonlinear functions is described. The technique can be used to efficiently generate higher order nonlinearities for predistortion linearization applications. We will demonstrate experimentally that the use of two cascaded third-order functions is comparable to a pure fifth-order implementation in performance. |
| doi_str_mv | 10.1109/TED.2005.845838 |
| format | Article |
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In this paper, we will study the effectiveness of predistortion techniques for TWT linearization using single-tone, two-tone, and quadrature-amplitude-modulation signals. The results from a series of predistortion linearization experiments for five TWTs covering L-, C-, Ku-, and Ka-bands and including both helix- and coupled-cavity TWTs will be presented. We will demonstrate the additional improvement of fifth-order predistortion linearization over the more commonly used third-order predistortion linearization. To circumvent the complexity and limited availability of a pure fifth-order linearizer, a technique for realizing nonlinear functions of order greater than or equal to five using cascaded third-order nonlinear functions is described. The technique can be used to efficiently generate higher order nonlinearities for predistortion linearization applications. We will demonstrate experimentally that the use of two cascaded third-order functions is comparable to a pure fifth-order implementation in performance.</description><identifier>ISSN: 0018-9383</identifier><identifier>EISSN: 1557-9646</identifier><identifier>DOI: 10.1109/TED.2005.845838</identifier><identifier>CODEN: IETDAI</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Amplifiers ; Applied sciences ; Availability ; Circuit properties ; Devices ; Electric, optical and optoelectronic circuits ; Electronic tubes, masers ; Electronics ; Exact sciences and technology ; Intermodulation distortion ; Joining ; Linear approximation ; Linearity ; Linearization ; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits ; Microwave power amplifiers ; nonlinear distortion ; Nonlinearity ; predistortion linearization ; Quadrature amplitude modulation ; quadrature-amplitude modulation (QAM) ; Traveling wave amplifiers ; Traveling wave tubes ; traveling wave tubes (TWTs)</subject><ispartof>IEEE transactions on electron devices, 2005-05, Vol.52 (5), p.718-727</ispartof><rights>2005 INIST-CNRS</rights><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 2005</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-5d566a3e6438002af0b6c8c0dae6984c8d68b8804875c21b39b38b93da1116a83</citedby><cites>FETCH-LOGICAL-c381t-5d566a3e6438002af0b6c8c0dae6984c8d68b8804875c21b39b38b93da1116a83</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1424352$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>315,781,785,797,27929,27930,54763</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1424352$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16714732$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Qiu, J.X.</creatorcontrib><creatorcontrib>Abe, D.K.</creatorcontrib><creatorcontrib>Antonsen, T.M.</creatorcontrib><creatorcontrib>Danly, B.G.</creatorcontrib><creatorcontrib>Levush, B.</creatorcontrib><creatorcontrib>Myers, R.E.</creatorcontrib><title>Linearizability of TWTAs using predistortion techniques</title><title>IEEE transactions on electron devices</title><addtitle>TED</addtitle><description>Predistortion linearization is a very effective technique for improving the linearity and efficiency of traveling wave tube (TWT) amplifiers. In this paper, we will study the effectiveness of predistortion techniques for TWT linearization using single-tone, two-tone, and quadrature-amplitude-modulation signals. The results from a series of predistortion linearization experiments for five TWTs covering L-, C-, Ku-, and Ka-bands and including both helix- and coupled-cavity TWTs will be presented. We will demonstrate the additional improvement of fifth-order predistortion linearization over the more commonly used third-order predistortion linearization. To circumvent the complexity and limited availability of a pure fifth-order linearizer, a technique for realizing nonlinear functions of order greater than or equal to five using cascaded third-order nonlinear functions is described. The technique can be used to efficiently generate higher order nonlinearities for predistortion linearization applications. We will demonstrate experimentally that the use of two cascaded third-order functions is comparable to a pure fifth-order implementation in performance.</description><subject>Amplifiers</subject><subject>Applied sciences</subject><subject>Availability</subject><subject>Circuit properties</subject><subject>Devices</subject><subject>Electric, optical and optoelectronic circuits</subject><subject>Electronic tubes, masers</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Intermodulation distortion</subject><subject>Joining</subject><subject>Linear approximation</subject><subject>Linearity</subject><subject>Linearization</subject><subject>Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits</subject><subject>Microwave power amplifiers</subject><subject>nonlinear distortion</subject><subject>Nonlinearity</subject><subject>predistortion linearization</subject><subject>Quadrature amplitude modulation</subject><subject>quadrature-amplitude modulation (QAM)</subject><subject>Traveling wave amplifiers</subject><subject>Traveling wave tubes</subject><subject>traveling wave tubes (TWTs)</subject><issn>0018-9383</issn><issn>1557-9646</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp90E1LAzEQBuAgCtbq2YOXRVBP2-Z7J8dS6wcUvFQ8hmw2qynb3ZpsD_XXm9JCwYOnMOSZGeZF6JrgESFYjRezxxHFWIyAC2BwggZEiCJXkstTNMCYQK4YsHN0EeMylZJzOkDF3LfOBP9jSt_4fpt1dbb4WExitom-_czWwVU-9l3ofddmvbNfrf_euHiJzmrTRHd1eIfo_Wm2mL7k87fn1-lknlsGpM9FJaQ0zEnOAGNqalxKCxZXxkkF3EIloQTAHAphKSmZKhmUilWGECINsCF62M9dh263t9crH61rGtO6bhO1SocoYFwkef-vpJAopirB2z9w2W1Cm67QIAsOUoodGu-RDV2MwdV6HfzKhK0mWO_y1ilvvctb7_NOHXeHsSZa09TBtNbHY5ssCC8YTe5m77xz7vjNKWeCsl88LYae</recordid><startdate>20050501</startdate><enddate>20050501</enddate><creator>Qiu, J.X.</creator><creator>Abe, D.K.</creator><creator>Antonsen, T.M.</creator><creator>Danly, B.G.</creator><creator>Levush, B.</creator><creator>Myers, R.E.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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In this paper, we will study the effectiveness of predistortion techniques for TWT linearization using single-tone, two-tone, and quadrature-amplitude-modulation signals. The results from a series of predistortion linearization experiments for five TWTs covering L-, C-, Ku-, and Ka-bands and including both helix- and coupled-cavity TWTs will be presented. We will demonstrate the additional improvement of fifth-order predistortion linearization over the more commonly used third-order predistortion linearization. To circumvent the complexity and limited availability of a pure fifth-order linearizer, a technique for realizing nonlinear functions of order greater than or equal to five using cascaded third-order nonlinear functions is described. The technique can be used to efficiently generate higher order nonlinearities for predistortion linearization applications. We will demonstrate experimentally that the use of two cascaded third-order functions is comparable to a pure fifth-order implementation in performance.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TED.2005.845838</doi><tpages>10</tpages></addata></record> |
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| subjects | Amplifiers Applied sciences Availability Circuit properties Devices Electric, optical and optoelectronic circuits Electronic tubes, masers Electronics Exact sciences and technology Intermodulation distortion Joining Linear approximation Linearity Linearization Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits Microwave power amplifiers nonlinear distortion Nonlinearity predistortion linearization Quadrature amplitude modulation quadrature-amplitude modulation (QAM) Traveling wave amplifiers Traveling wave tubes traveling wave tubes (TWTs) |
| title | Linearizability of TWTAs using predistortion techniques |
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