Linearization of Ka-band high power amplifiers
Increased commercial use of satellite terminals, broadband wireless communications and high-data link has created a strong demand for Ka-band high power amplifiers (HPAs) coupled with high power efficiency and good linearity performance. To meet the stringent linearity requirement without largely sa...
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| creator | Bo Shi Jijun Yao Chia, M. Y. W. |
| description | Increased commercial use of satellite terminals, broadband wireless communications and high-data link has created a strong demand for Ka-band high power amplifiers (HPAs) coupled with high power efficiency and good linearity performance. To meet the stringent linearity requirement without largely sacrificing output power and efficiency, linearization is the only solution. This paper demonstrates the effectiveness of digital predistortion (DPD) in linearization of Ka-band HPAs by presenting the experimental results from our memory polynomial predistorter based wideband DPD testbed. Tested on an in-house developed 15W Ka-band solid state power amplifier (SSPA), it is shown that with linearization 15-25 dB linearity improvement is achieved for 64-QAM and 8-tone signals. While meeting the required linearity, this will lead to an significant increase on the output power and efficiency, compared to the conventional back-off method. |
| doi_str_mv | 10.1109/RFIT.2012.6401653 |
| format | Conference Proceeding |
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While meeting the required linearity, this will lead to an significant increase on the output power and efficiency, compared to the conventional back-off method.</description><subject>Bandwidth</subject><subject>Digital predistortion</subject><subject>Ka-band power amplifiers</subject><subject>Linearity</subject><subject>Linearization</subject><subject>Microwave amplifiers</subject><subject>Microwave communication</subject><subject>Polynomials</subject><subject>Power efficiency</subject><subject>Predistortion</subject><isbn>9781467323031</isbn><isbn>1467323039</isbn><isbn>1467323047</isbn><isbn>9781467323055</isbn><isbn>1467323055</isbn><isbn>9781467323048</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2012</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNo1j81Kw0AUhUekoLZ5AHGTF0i8N3d-Oksp1hYDgmRfbubHjrRJSAqiT2_BujqcxXf4jhD3CCUi2Mf39bYpK8Cq1BJQK7oSdyi1oYpAmmuRWbP874Q3IpumTwA4s9pWcCvKOnWBx_TDp9R3eR_zVy5a7ny-Tx_7fOi_wpjzcTikmMI4LcQs8mEK2SXnolk_N6tNUb-9bFdPdZEsnAoL0TFJidIr61RLMQbPVi2jB-NYSWJCydGghbNWcKxjq32wjMpJIpqLh7_ZFELYDWM68vi9uzykX4MsQ6U</recordid><startdate>201211</startdate><enddate>201211</enddate><creator>Bo Shi</creator><creator>Jijun Yao</creator><creator>Chia, M. 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W.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan All Online (POP All Online) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP All) 1998-Present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Bo Shi</au><au>Jijun Yao</au><au>Chia, M. Y. W.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Linearization of Ka-band high power amplifiers</atitle><btitle>2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)</btitle><stitle>RFIT</stitle><date>2012-11</date><risdate>2012</risdate><spage>180</spage><epage>182</epage><pages>180-182</pages><isbn>9781467323031</isbn><isbn>1467323039</isbn><eisbn>1467323047</eisbn><eisbn>9781467323055</eisbn><eisbn>1467323055</eisbn><eisbn>9781467323048</eisbn><abstract>Increased commercial use of satellite terminals, broadband wireless communications and high-data link has created a strong demand for Ka-band high power amplifiers (HPAs) coupled with high power efficiency and good linearity performance. To meet the stringent linearity requirement without largely sacrificing output power and efficiency, linearization is the only solution. This paper demonstrates the effectiveness of digital predistortion (DPD) in linearization of Ka-band HPAs by presenting the experimental results from our memory polynomial predistorter based wideband DPD testbed. Tested on an in-house developed 15W Ka-band solid state power amplifier (SSPA), it is shown that with linearization 15-25 dB linearity improvement is achieved for 64-QAM and 8-tone signals. While meeting the required linearity, this will lead to an significant increase on the output power and efficiency, compared to the conventional back-off method.</abstract><pub>IEEE</pub><doi>10.1109/RFIT.2012.6401653</doi><tpages>3</tpages></addata></record> |
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| ispartof | 2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), 2012, p.180-182 |
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| language | eng |
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| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Bandwidth Digital predistortion Ka-band power amplifiers Linearity Linearization Microwave amplifiers Microwave communication Polynomials Power efficiency Predistortion |
| title | Linearization of Ka-band high power amplifiers |
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