A hybrid digital/RF envelope predistortion linearization system for power amplifiers
This paper presents an adaptive wide-band digitally controlled RF envelope predistortion linearization system for power amplifiers (PAs). A field-programmable gate-array-based lookup table is indexed by a digitized envelope power signal, and instantaneously adjusts the input signal amplitude and pha...
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| Veröffentlicht in: | IEEE transactions on microwave theory and techniques 2005-01, Vol.53 (1), p.229-237 |
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| creator | Wangmyong Woo Miller, M.D. Kenney, J.S. |
| description | This paper presents an adaptive wide-band digitally controlled RF envelope predistortion linearization system for power amplifiers (PAs). A field-programmable gate-array-based lookup table is indexed by a digitized envelope power signal, and instantaneously adjusts the input signal amplitude and phase via an RF vector modulator to compensate for the AM-AM and AM-PM distortion. The advantages of this predistortion architecture over conventional baseband digital approaches are that a 20%-33% wider correction bandwidth is achievable at the same clock speeds, and linearization can be performed without the need for a digital baseband input signal. The timing match between the input RF signal and predistorting signal, which is one of the critical factors for performance, was investigated and adjusted to obtain optimum performance. Using three-carrier cdmaOne and wide-band multitone signals, the linearization performances for a 0.5-W GaAs heterostructure field-effect transistor, a 90-W peak-envelope-power (PEP) silicon LDMOS PA, and a 680-W PEP LDMOS PA were examined. In addition, the predistortion performance variation for different signals was studied in terms of signal envelope statistics, output powers, and PA power capacities. |
| doi_str_mv | 10.1109/TMTT.2004.839306 |
| format | Article |
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A field-programmable gate-array-based lookup table is indexed by a digitized envelope power signal, and instantaneously adjusts the input signal amplitude and phase via an RF vector modulator to compensate for the AM-AM and AM-PM distortion. The advantages of this predistortion architecture over conventional baseband digital approaches are that a 20%-33% wider correction bandwidth is achievable at the same clock speeds, and linearization can be performed without the need for a digital baseband input signal. The timing match between the input RF signal and predistorting signal, which is one of the critical factors for performance, was investigated and adjusted to obtain optimum performance. Using three-carrier cdmaOne and wide-band multitone signals, the linearization performances for a 0.5-W GaAs heterostructure field-effect transistor, a 90-W peak-envelope-power (PEP) silicon LDMOS PA, and a 680-W PEP LDMOS PA were examined. In addition, the predistortion performance variation for different signals was studied in terms of signal envelope statistics, output powers, and PA power capacities.</description><identifier>ISSN: 0018-9480</identifier><identifier>EISSN: 1557-9670</identifier><identifier>DOI: 10.1109/TMTT.2004.839306</identifier><identifier>CODEN: IETMAB</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Adaptive control ; Adjustment ; Amplifiers ; Applied sciences ; Base station ; Baseband ; Broadband amplifiers ; Circuit properties ; Digital ; Digital control ; Digitization ; Electric, optical and optoelectronic circuits ; Electronic circuits ; Electronics ; envelope ; Envelopes ; Exact sciences and technology ; field programmable gate array (FPGA) ; Gallium arsenide ; Linearization ; lookup table (LUT) ; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits ; mixed signal ; multicarrier power amplifier (MCPA) ; power amplifier (PA) ; Power amplifiers ; Predistortion ; Programmable control ; Radio frequencies ; Radio frequency ; Radiofrequency amplifiers ; RF signals</subject><ispartof>IEEE transactions on microwave theory and techniques, 2005-01, Vol.53 (1), p.229-237</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-c383t-e552fdbe6c5894545fb88d1b8d755192f1d55f450590d26319eb4f3848b9bbd93</citedby><cites>FETCH-LOGICAL-c383t-e552fdbe6c5894545fb88d1b8d755192f1d55f450590d26319eb4f3848b9bbd93</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/1381693$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>309,310,314,777,781,786,787,793,4036,4037,23911,23912,25121,27905,27906,54739</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/1381693$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16449583$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Wangmyong Woo</creatorcontrib><creatorcontrib>Miller, M.D.</creatorcontrib><creatorcontrib>Kenney, J.S.</creatorcontrib><title>A hybrid digital/RF envelope predistortion linearization system for power amplifiers</title><title>IEEE transactions on microwave theory and techniques</title><addtitle>TMTT</addtitle><description>This paper presents an adaptive wide-band digitally controlled RF envelope predistortion linearization system for power amplifiers (PAs). A field-programmable gate-array-based lookup table is indexed by a digitized envelope power signal, and instantaneously adjusts the input signal amplitude and phase via an RF vector modulator to compensate for the AM-AM and AM-PM distortion. The advantages of this predistortion architecture over conventional baseband digital approaches are that a 20%-33% wider correction bandwidth is achievable at the same clock speeds, and linearization can be performed without the need for a digital baseband input signal. The timing match between the input RF signal and predistorting signal, which is one of the critical factors for performance, was investigated and adjusted to obtain optimum performance. Using three-carrier cdmaOne and wide-band multitone signals, the linearization performances for a 0.5-W GaAs heterostructure field-effect transistor, a 90-W peak-envelope-power (PEP) silicon LDMOS PA, and a 680-W PEP LDMOS PA were examined. In addition, the predistortion performance variation for different signals was studied in terms of signal envelope statistics, output powers, and PA power capacities.</description><subject>Adaptive control</subject><subject>Adjustment</subject><subject>Amplifiers</subject><subject>Applied sciences</subject><subject>Base station</subject><subject>Baseband</subject><subject>Broadband amplifiers</subject><subject>Circuit properties</subject><subject>Digital</subject><subject>Digital control</subject><subject>Digitization</subject><subject>Electric, optical and optoelectronic circuits</subject><subject>Electronic circuits</subject><subject>Electronics</subject><subject>envelope</subject><subject>Envelopes</subject><subject>Exact sciences and technology</subject><subject>field programmable gate array (FPGA)</subject><subject>Gallium arsenide</subject><subject>Linearization</subject><subject>lookup table (LUT)</subject><subject>Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits</subject><subject>mixed signal</subject><subject>multicarrier power amplifier (MCPA)</subject><subject>power amplifier (PA)</subject><subject>Power amplifiers</subject><subject>Predistortion</subject><subject>Programmable control</subject><subject>Radio frequencies</subject><subject>Radio frequency</subject><subject>Radiofrequency amplifiers</subject><subject>RF signals</subject><issn>0018-9480</issn><issn>1557-9670</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp90U1r3DAQBmAREugm7b3Qiwk0OXkjWR87OoaQj0JKoLhnIVujVMFrOZI3Zfvro-0GAj30JAY9M8zwEvKZ0SVjVF-039t22VAqlsA1p-qALJiUq1qrFT0kC0oZ1FoA_UCOc34qpZAUFqS9rH5tuxRc5cJjmO1w8eOmwvEFhzhhNSV0Ic8xzSGO1RBGtCn8sX-rvM0zrisfUzXF35gqu56G4AOm_JEceTtk_PT2npCfN9ft1V19_3D77eryvu458LlGKRvvOlS9BC2kkL4DcKwDt5KS6cYzJ6Uve0pNXaM409gJz0FAp7vOaX5CzvdzpxSfN5hnsw65x2GwI8ZNNqBVIxSTtMiz_8oGqFgJBQWe_gOf4iaN5QoDqgguNSuI7lGfYs4JvZlSWNu0NYyaXRpml4bZpWH2aZSWr29zbe7t4JMd-5Df-5QQWgIv7sveBUR8_-bAlOb8FRSiktU</recordid><startdate>200501</startdate><enddate>200501</enddate><creator>Wangmyong Woo</creator><creator>Miller, M.D.</creator><creator>Kenney, J.S.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><general>The Institute of Electrical and Electronics Engineers, Inc. (IEEE)</general><scope>97E</scope><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>7U5</scope><scope>F28</scope><scope>FR3</scope></search><sort><creationdate>200501</creationdate><title>A hybrid digital/RF envelope predistortion linearization system for power amplifiers</title><author>Wangmyong Woo ; Miller, M.D. ; Kenney, J.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c383t-e552fdbe6c5894545fb88d1b8d755192f1d55f450590d26319eb4f3848b9bbd93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Adaptive control</topic><topic>Adjustment</topic><topic>Amplifiers</topic><topic>Applied sciences</topic><topic>Base station</topic><topic>Baseband</topic><topic>Broadband amplifiers</topic><topic>Circuit properties</topic><topic>Digital</topic><topic>Digital control</topic><topic>Digitization</topic><topic>Electric, optical and optoelectronic circuits</topic><topic>Electronic circuits</topic><topic>Electronics</topic><topic>envelope</topic><topic>Envelopes</topic><topic>Exact sciences and technology</topic><topic>field programmable gate array (FPGA)</topic><topic>Gallium arsenide</topic><topic>Linearization</topic><topic>lookup table (LUT)</topic><topic>Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits</topic><topic>mixed signal</topic><topic>multicarrier power amplifier (MCPA)</topic><topic>power amplifier (PA)</topic><topic>Power amplifiers</topic><topic>Predistortion</topic><topic>Programmable control</topic><topic>Radio frequencies</topic><topic>Radio frequency</topic><topic>Radiofrequency amplifiers</topic><topic>RF signals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wangmyong Woo</creatorcontrib><creatorcontrib>Miller, M.D.</creatorcontrib><creatorcontrib>Kenney, J.S.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 2005-present</collection><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><jtitle>IEEE transactions on microwave theory and techniques</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Wangmyong Woo</au><au>Miller, M.D.</au><au>Kenney, J.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A hybrid digital/RF envelope predistortion linearization system for power amplifiers</atitle><jtitle>IEEE transactions on microwave theory and techniques</jtitle><stitle>TMTT</stitle><date>2005-01</date><risdate>2005</risdate><volume>53</volume><issue>1</issue><spage>229</spage><epage>237</epage><pages>229-237</pages><issn>0018-9480</issn><eissn>1557-9670</eissn><coden>IETMAB</coden><abstract>This paper presents an adaptive wide-band digitally controlled RF envelope predistortion linearization system for power amplifiers (PAs). A field-programmable gate-array-based lookup table is indexed by a digitized envelope power signal, and instantaneously adjusts the input signal amplitude and phase via an RF vector modulator to compensate for the AM-AM and AM-PM distortion. The advantages of this predistortion architecture over conventional baseband digital approaches are that a 20%-33% wider correction bandwidth is achievable at the same clock speeds, and linearization can be performed without the need for a digital baseband input signal. The timing match between the input RF signal and predistorting signal, which is one of the critical factors for performance, was investigated and adjusted to obtain optimum performance. Using three-carrier cdmaOne and wide-band multitone signals, the linearization performances for a 0.5-W GaAs heterostructure field-effect transistor, a 90-W peak-envelope-power (PEP) silicon LDMOS PA, and a 680-W PEP LDMOS PA were examined. In addition, the predistortion performance variation for different signals was studied in terms of signal envelope statistics, output powers, and PA power capacities.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TMTT.2004.839306</doi><tpages>9</tpages></addata></record> |
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| subjects | Adaptive control Adjustment Amplifiers Applied sciences Base station Baseband Broadband amplifiers Circuit properties Digital Digital control Digitization Electric, optical and optoelectronic circuits Electronic circuits Electronics envelope Envelopes Exact sciences and technology field programmable gate array (FPGA) Gallium arsenide Linearization lookup table (LUT) Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits mixed signal multicarrier power amplifier (MCPA) power amplifier (PA) Power amplifiers Predistortion Programmable control Radio frequencies Radio frequency Radiofrequency amplifiers RF signals |
| title | A hybrid digital/RF envelope predistortion linearization system for power amplifiers |
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