New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation
Synchronization of large acquisition bandwidth brings great challenges to the traditional second-order phase-locked loop (PLL). To address the contradiction between acquisition bandwidth and noise suppression capability of the traditional PLL, a new second-order PLL coupled with a nonlinear element...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-11-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/7/12/346 |
| _version_ | 1798039631605792768 |
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| author | Lei Zhao Lei Shi Congying Zhu |
| author_facet | Lei Zhao Lei Shi Congying Zhu |
| author_sort | Lei Zhao |
| collection | DOAJ |
| description | Synchronization of large acquisition bandwidth brings great challenges to the traditional second-order phase-locked loop (PLL). To address the contradiction between acquisition bandwidth and noise suppression capability of the traditional PLL, a new second-order PLL coupled with a nonlinear element is proposed. The proposed nonlinear second-order PLL regulates the loop noise bandwidth adaptively by the nonlinear module. When a large input⁻output phase error occurs, this PLL reduces the frequency offset quickly by taking advantage of the large bandwidth. When the phase error is reduced by the loop control, the proposed PLL suppresses noises by using the small bandwidth to increase the tracking accuracy. Simulation results demonstrate that the tracking speed of the proposed PLL is increased considerably, and its acquisition bandwidth is increased to 18.8 kHz compared with that of the traditional second-order PLL (4 kHz). |
| first_indexed | 2024-04-11T21:56:33Z |
| format | Article |
| id | doaj.art-2e8ee6d8293c446fbe1553650b539381 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T21:56:33Z |
| publishDate | 2018-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-2e8ee6d8293c446fbe1553650b5393812022-12-22T04:01:04ZengMDPI AGElectronics2079-92922018-11-0171234610.3390/electronics7120346electronics7120346New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth RegulationLei Zhao0Lei Shi1Congying Zhu2School of Information, Xi’an University of Finance and Economics, Xi’an 710100, ChinaSchool of Aerospace Science and Technology, Xidian University, Xi’an 710126, ChinaSchool of Aerospace Science and Technology, Xidian University, Xi’an 710126, ChinaSynchronization of large acquisition bandwidth brings great challenges to the traditional second-order phase-locked loop (PLL). To address the contradiction between acquisition bandwidth and noise suppression capability of the traditional PLL, a new second-order PLL coupled with a nonlinear element is proposed. The proposed nonlinear second-order PLL regulates the loop noise bandwidth adaptively by the nonlinear module. When a large input⁻output phase error occurs, this PLL reduces the frequency offset quickly by taking advantage of the large bandwidth. When the phase error is reduced by the loop control, the proposed PLL suppresses noises by using the small bandwidth to increase the tracking accuracy. Simulation results demonstrate that the tracking speed of the proposed PLL is increased considerably, and its acquisition bandwidth is increased to 18.8 kHz compared with that of the traditional second-order PLL (4 kHz).https://www.mdpi.com/2079-9292/7/12/346phase-locked loopacquisition bandwidthtracking accuracyadaptiveloop noise bandwidth |
| spellingShingle | Lei Zhao Lei Shi Congying Zhu New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation Electronics phase-locked loop acquisition bandwidth tracking accuracy adaptive loop noise bandwidth |
| title | New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation |
| title_full | New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation |
| title_fullStr | New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation |
| title_full_unstemmed | New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation |
| title_short | New Nonlinear Second-Order Phase-Locked Loop with Adaptive Bandwidth Regulation |
| title_sort | new nonlinear second order phase locked loop with adaptive bandwidth regulation |
| topic | phase-locked loop acquisition bandwidth tracking accuracy adaptive loop noise bandwidth |
| url | https://www.mdpi.com/2079-9292/7/12/346 |
| work_keys_str_mv | AT leizhao newnonlinearsecondorderphaselockedloopwithadaptivebandwidthregulation AT leishi newnonlinearsecondorderphaselockedloopwithadaptivebandwidthregulation AT congyingzhu newnonlinearsecondorderphaselockedloopwithadaptivebandwidthregulation |