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Design of Unsymmetrical Doherty Power Amplifier for 460MHz LTE-Advanced Applications
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ma, Chuan Hui Pan, Wen Sheng Tang, You Xi Qing, Chao Jin |
| Copyright Year | 2013 |
| Abstract | An unsymmetrical Doherty power amplifier (DPA) at 460MHz is presented in this paper. The carrier and peaking amplifier of the DPA, which base on two equal-sized devices, are matched with different networks to mitigate the performance degradation caused by the limited load modulation. Measured with continuous wave (CW), the unsymmetrical DPA saturates at an output power of 49.2dBm and achieves a drain efficiency of 51% at 6dB back-off. Using a one-carrier long term evolution advanced (LTE-Advanced) signal with 20MHz bandwidth, the unsymmetrical DPA exhibits a drain efficiency of 48.7% at an average output power of 42.1dBm, along with adjacent channel leakage ratio (ACLR) of-34.1dBc and-53.3dBc before and after digital pre-distortion (DPD), respectively. |
| Starting Page | 1768 |
| Ending Page | 1772 |
| Page Count | 5 |
| File Format | PDF HTM / HTML |
| DOI | 10.4028/www.scientific.net/AMM.347-350.1768 |
| Volume Number | 347-350 |
| Alternate Webpage(s) | https://download.atlantis-press.com/article/5843.pdf |
| Alternate Webpage(s) | https://doi.org/10.4028/www.scientific.net%2FAMM.347-350.1768 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
