A Simplified One-Parallel-Element Automatic Impedance-Matching Network Applied to Electromagnetic Acoustic Transducers Driving †
Abstract
:1. Introduction
Contribution
2. Backgound Theory
2.1. Ultrasonic Waves and Electromagnetic Acoustic Transducer
2.2. Maximum Power Transfer Theorem
3. Impedance-Matching Networks
3.1. L-Networks
3.2. Simplified One-Parallel-Element ()
4. EMAT Impedance-Matching Theoretical Assessment
5. Experimental Validation
5.1. Experimental Setup
Hardware Peak Detector
5.2. Experimental Results
Hardware Peak Detector
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Optimal Capacitance Found [nF] | No Network pk-pk [V] | Optimal Network pk-pk [V] | Gain [db] | Time for Full Sweep [s] | |
---|---|---|---|---|---|
2 MHz Man. | 3.06 | 691.5 | 1307.9 | 5.5352 | 1481.9 |
3 MHz Man. | 1.235 | 661.4 | 1180.1 | 5.0283 | 1372.7 |
4 MHz Man. | 0.61 | 608.8 | 1029.7 | 4.5647 | 1241.7 |
2 MHz Aut. | 2.56 | 834.4 | 1104.9 | 2.4386 | 754.4 |
3 MHz Aut. | 1.0 | 732.8 | 1052.3 | 3.1424 | 719.3 |
4 MHz Aut. | 0.50 | 759.1 | 1022.2 | 2.5843 | 718.3 |
Optimal Capacitance Found [nF] | No Network pk-pk [V] | Optimal Network pk-pk [V] | Gain [db] | |
---|---|---|---|---|
2 MHz Aut. | 3.06 | 1045.1 | 1488.1 | 3.0698 |
3 MHz Aut. | 1.235 | 1002.5 | 1515.9 | 3.5917 |
4 MHz Aut. | 0.61 | 852.2 | 1338.1 | 3.9191 |
RPDR’s EMAT | HWS2225 | |||||||
---|---|---|---|---|---|---|---|---|
Optimun Capacitance Found [nF] | No Network pk-pk [V] | Optimal Network pk-pk [V] | Gain [db] | Optimun Capacitance Found [nF] | No Network pk-pk [V] | Optimal Network pk-pk [V] | Gain [db] | |
2 MHz Aut. | 2.45 | 402.9 | 897.15 | 6.9533 | 2.795 | 360.75 | 981.75 | 8.6958 |
3 MHz Aut. | 1 | 352.65 | 621.15 | 4.9170 | 1.235 | 289.5 | 694.8 | 7.6042 |
4 MHz Aut. | 0.5 | 356.7 | 403.35 | 1.0675 | 0.61 | 276 | 459 | 4.4180 |
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Andrade, J.P.T.; Bazan, P.L.F.C.; Medeiros, V.S.; Kubrusly, A.C. A Simplified One-Parallel-Element Automatic Impedance-Matching Network Applied to Electromagnetic Acoustic Transducers Driving. Automation 2023, 4, 378-395. https://doi.org/10.3390/automation4040022
Andrade JPT, Bazan PLFC, Medeiros VS, Kubrusly AC. A Simplified One-Parallel-Element Automatic Impedance-Matching Network Applied to Electromagnetic Acoustic Transducers Driving. Automation. 2023; 4(4):378-395. https://doi.org/10.3390/automation4040022
Chicago/Turabian StyleAndrade, João Pedro T., Pedro Leon F. C. Bazan, Vivian S. Medeiros, and Alan C. Kubrusly. 2023. "A Simplified One-Parallel-Element Automatic Impedance-Matching Network Applied to Electromagnetic Acoustic Transducers Driving" Automation 4, no. 4: 378-395. https://doi.org/10.3390/automation4040022