DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cha, J | - |
dc.contributor.author | Kim, I | - |
dc.contributor.author | Hong, S | - |
dc.contributor.author | Kim, B | - |
dc.contributor.author | Lee, JS | - |
dc.contributor.author | Kim, HS | - |
dc.date.accessioned | 2016-04-01T01:41:53Z | - |
dc.date.available | 2016-04-01T01:41:53Z | - |
dc.date.created | 2009-02-28 | - |
dc.date.issued | 2007-01 | - |
dc.identifier.issn | 0192-6225 | - |
dc.identifier.other | 2007-OAK-0000006683 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/23505 | - |
dc.description.abstract | Linear amplification and reduction of the memory effect of a wide bandwidth signal have been realized for a next generation base station power amplifier. Using a simple nonlinear LDMOS model, the third-order intermodulation distortion current is analyzed using a third-order power series. The limitations in shorting the envelope and second harmonics are studied. From the analysis, it is proven that the envelope is a more critical component than the second harmonic for the memory effect and linearity. In order to minimize the envelope voltages, a new matching topology is proposed, which consists Of a series LC circuit for shorting the device at a low frequency while maintaining a matchable impedance at the operating frequency. The proposed power amplifier was constructed using a 90 W PEP LDMOSFET at a 2.14 GHz, center frequency and tested for two-tone and multi-carrier WCDMA signals. The test results show that the memory effect and nonlinearity are drastically reduced for the proposed amplifier. For the two-tone signals, an asymmetry of less than 2 dB up to 60 MHz tone spacing is achieved for the IMD3 and up to 40 MHz for the IMD5. For the WCDMA 20FA signal with a bandwidth of 100 MHz, a linearity improvement of approximately 15 dB is achieved by minimizing the envelope impedances. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | HORIZON HOUSE PUBLICATIONS INC | - |
dc.relation.isPartOf | MICROWAVE JOURNAL | - |
dc.subject | DESIGN | - |
dc.title | Memory effect minimization and wide instantaneous bandwidth operation of a base station power amplifier | - |
dc.type | Article | - |
dc.contributor.college | 전자전기공학과 | - |
dc.author.google | Cha, J | - |
dc.author.google | Kim, I | - |
dc.author.google | Hong, S | - |
dc.author.google | Kim, B | - |
dc.author.google | Lee, JS | - |
dc.author.google | Kim, HS | - |
dc.relation.volume | 50 | - |
dc.relation.issue | 1 | - |
dc.relation.startpage | 66 | - |
dc.contributor.id | 10106173 | - |
dc.relation.journal | MICROWAVE JOURNAL | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | MICROWAVE JOURNAL, v.50, no.1, pp.66 - + | - |
dc.identifier.wosid | 000245119400019 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | + | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 66 | - |
dc.citation.title | MICROWAVE JOURNAL | - |
dc.citation.volume | 50 | - |
dc.contributor.affiliatedAuthor | Kim, B | - |
dc.identifier.scopusid | 2-s2.0-33847038039 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 3 | - |
dc.type.docType | Article | - |
dc.relation.journalWebOfScienceCategory | Engineering, Electrical & Electronic | - |
dc.relation.journalWebOfScienceCategory | Telecommunications | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Telecommunications | - |
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