Name
Abstract | ||
|---|---|---|
In this brief, we present a 60-W power amplifier that is linearized using an RF predistorter for multicarrier wideband code-division multiple-access (WCDMA) applications. The proposed RF predistorter is fully composed of RF or analog circuits, and it has a moderate memory effect compensation capability using a delayed third-order intermodulation (IM3) component path. It also includes the IM5 generation circuits and a compact IM3 generator that is capable of autocanceling for the fundamental component. The proposed RF predistorter was implemented and applied to a 60-W high-power WCDMA amplifier. For a four-carrier downlink WCDMA signal, the RF predistorter improved the adjacent channel leakage power ratio at a 5-MHz offset by 6.19 dB at an average output power of 48 dBm. The total efficiency of the system is as high as 13.6% at the same output power level. At an output power level of 60 W, the linearized power amplifier complies with the linearity specification of the WCDMA system. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1109/TCSII.2009.2015385 | IEEE Trans. on Circuits and Systems |
Keywords | Field | DocType |
wcdma system,proposed rf predistorter,60-w high-power wcdma amplifier,linearized power amplifier complies,60-w multicarrier wcdma power,rf predistorter,output power level,average output power,adjacent channel leakage power,60-w power amplifier,four-carrier downlink wcdma signal,power generation,downlink,intermodulation,power amplifier,intermodulation distortion,rf circuits,radio frequency,code division multiple access,wideband code division multiple access,memory effect,analog circuits | Wideband,Analogue electronics,Adjacent channel,Linearity,Electronic engineering,Radio frequency,Intermodulation,RF power amplifier,Electrical engineering,Mathematics,Amplifier | Journal |
Volume | Issue | ISSN |
56 | 4 | 1549-7747 |
Citations | PageRank | References |
5 | 1.08 | 1 |
Authors | ||
10 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Kyung-Hoon Lim | 1 | 5 | 1.08 |
| Gunhyun Ahn | 2 | 5 | 1.08 |
| Sung-Chan Jung | 3 | 25 | 4.42 |
| Hyunchul Park | 4 | 341 | 17.56 |
| Minsu Kim | 5 | 414 | 64.12 |
| Ju-Ho Van | 6 | 5 | 1.08 |
| Hanjin Cho | 7 | 46 | 10.00 |
| Jonghyuk Jeong | 8 | 7 | 1.52 |
| Cheon-Seok Park | 9 | 12 | 2.14 |
| Youngoo Yang | 10 | 79 | 21.71 |