Optimum power transfer in RF front end systems using adaptive impedance matching technique
Matching the antenna’s impedance to the RF-front-end of a wireless communications system is challenging as the impedance varies with its surround environment. Autonomously matching the antenna to the RF-front-end is therefore essential to optimize power transfer and thereby maintain the antenna’s ra...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Group Publishing UK
2021
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| Subjects: | |
| Online Access: | https://repository.londonmet.ac.uk/6736/1/Published_Sci%20Rep%2011%2C%2011825%20%282021%29.pdf |
| _version_ | 1804072646098288640 |
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| author | Alibakhshikenari, Mohammad Virdee, Bal Singh Azpilicueta, Leyre See, Chan Abd-Alhameed, Raed Althuwayb, Ayman Abdulhadi Falcone, Francisco Huynen, Isabelle Denidni, Tayeb A. Limiti, Ernesto |
| author_facet | Alibakhshikenari, Mohammad Virdee, Bal Singh Azpilicueta, Leyre See, Chan Abd-Alhameed, Raed Althuwayb, Ayman Abdulhadi Falcone, Francisco Huynen, Isabelle Denidni, Tayeb A. Limiti, Ernesto |
| author_sort | Alibakhshikenari, Mohammad |
| collection | LMU |
| description | Matching the antenna’s impedance to the RF-front-end of a wireless communications system is challenging as the impedance varies with its surround environment. Autonomously matching the antenna to the RF-front-end is therefore essential to optimize power transfer and thereby maintain the antenna’s radiation efficiency. This paper presents a theoretical technique for automatically tuning an LC impedance matching network that compensates antenna mismatch presented to the RF-front-end. The proposed technique converges to a matching point without the need of complex mathematical modelling of the system comprising of non-linear control elements. Digital circuitry is used to implement the required matching circuit. Reliable convergence is achieved within the tuning range of the LC-network using control-loops that can independently control the LC impedance. An algorithm based on the proposed technique was used to verify its effectiveness with various antenna loads. Mismatch error of the technique is less than 0.2%. The technique enables speedy convergence (< 5 μs) and is highly accurate for autonomous adaptive antenna matching networks. |
| first_indexed | 2024-07-09T04:02:27Z |
| format | Article |
| id | oai:repository.londonmet.ac.uk:6736 |
| institution | London Metropolitan University |
| language | English |
| last_indexed | 2024-07-09T04:02:27Z |
| publishDate | 2021 |
| publisher | Nature Group Publishing UK |
| record_format | eprints |
| spelling | oai:repository.londonmet.ac.uk:67362021-06-07T09:55:16Z http://repository.londonmet.ac.uk/6736/ Optimum power transfer in RF front end systems using adaptive impedance matching technique Alibakhshikenari, Mohammad Virdee, Bal Singh Azpilicueta, Leyre See, Chan Abd-Alhameed, Raed Althuwayb, Ayman Abdulhadi Falcone, Francisco Huynen, Isabelle Denidni, Tayeb A. Limiti, Ernesto 620 Engineering & allied operations Matching the antenna’s impedance to the RF-front-end of a wireless communications system is challenging as the impedance varies with its surround environment. Autonomously matching the antenna to the RF-front-end is therefore essential to optimize power transfer and thereby maintain the antenna’s radiation efficiency. This paper presents a theoretical technique for automatically tuning an LC impedance matching network that compensates antenna mismatch presented to the RF-front-end. The proposed technique converges to a matching point without the need of complex mathematical modelling of the system comprising of non-linear control elements. Digital circuitry is used to implement the required matching circuit. Reliable convergence is achieved within the tuning range of the LC-network using control-loops that can independently control the LC impedance. An algorithm based on the proposed technique was used to verify its effectiveness with various antenna loads. Mismatch error of the technique is less than 0.2%. The technique enables speedy convergence (< 5 μs) and is highly accurate for autonomous adaptive antenna matching networks. Nature Group Publishing UK 2021-06-03 Article PeerReviewed text en cc_by_nc_nd_4 https://repository.londonmet.ac.uk/6736/1/Published_Sci%20Rep%2011%2C%2011825%20%282021%29.pdf Alibakhshikenari, Mohammad, Virdee, Bal Singh, Azpilicueta, Leyre, See, Chan, Abd-Alhameed, Raed, Althuwayb, Ayman Abdulhadi, Falcone, Francisco, Huynen, Isabelle, Denidni, Tayeb A. and Limiti, Ernesto (2021) Optimum power transfer in RF front end systems using adaptive impedance matching technique. Scientific Reports, 11 (11825). pp. 1-12. ISSN 2045-2322 https://doi.org/10.1038/s41598-021-91355-4 10.1038/s41598-021-91355-4 |
| spellingShingle | 620 Engineering & allied operations Alibakhshikenari, Mohammad Virdee, Bal Singh Azpilicueta, Leyre See, Chan Abd-Alhameed, Raed Althuwayb, Ayman Abdulhadi Falcone, Francisco Huynen, Isabelle Denidni, Tayeb A. Limiti, Ernesto Optimum power transfer in RF front end systems using adaptive impedance matching technique |
| title | Optimum power transfer in RF front end systems using adaptive impedance matching technique |
| title_full | Optimum power transfer in RF front end systems using adaptive impedance matching technique |
| title_fullStr | Optimum power transfer in RF front end systems using adaptive impedance matching technique |
| title_full_unstemmed | Optimum power transfer in RF front end systems using adaptive impedance matching technique |
| title_short | Optimum power transfer in RF front end systems using adaptive impedance matching technique |
| title_sort | optimum power transfer in rf front end systems using adaptive impedance matching technique |
| topic | 620 Engineering & allied operations |
| url | https://repository.londonmet.ac.uk/6736/1/Published_Sci%20Rep%2011%2C%2011825%20%282021%29.pdf |
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