Electronic Tunability and Cancellation of Serial Losses in Wire Coils
This work presents a novel methodology to adjust the inductance of real coils (electronically) and to cancel out serial losses (up to tens or even hundreds of Ohms in practice) electronically. This is important in various fields of electromagnetic sensors (inductive sensors), energy harvesting, meas...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-09-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/19/7373 |
| _version_ | 1797476979272843264 |
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| author | Roman Sotner Jan Jerabek Ladislav Polak Radek Theumer Lukas Langhammer |
| author_facet | Roman Sotner Jan Jerabek Ladislav Polak Radek Theumer Lukas Langhammer |
| author_sort | Roman Sotner |
| collection | DOAJ |
| description | This work presents a novel methodology to adjust the inductance of real coils (electronically) and to cancel out serial losses (up to tens or even hundreds of Ohms in practice) electronically. This is important in various fields of electromagnetic sensors (inductive sensors), energy harvesting, measurement and especially in the instrumentation of various devices. State-of-the-art methods do not solve the problem of cancellation of real serial resistance, which is the most important parasitic feature in low- and middle-frequency bands. In this case, the employment of serial negative resistance is not possible due to stability issues. To solve this issue, two solutions allowing the cancellation of serial resistance by the value of the passive element and an electronically adjustable parameter are introduced. The operational ranges are between 0.1 and 1 mH and 0.1 and 10 mH, valid in bandwidths from hundreds of Hz up to hundreds of kHz. The proposed concepts are experimentally tested in two applications: an electronically tunable oscillator of LC type and an electronically tunable band-pass RLC filter. The presented methodology offers significant improvements in the process of circuit design employing inductors and can be beneficially used for on-chip design, where serial resistance issues can be very significant. |
| first_indexed | 2024-03-09T21:11:29Z |
| format | Article |
| id | doaj.art-d215ec3732ad4864a52cde680c1ae5c8 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T21:11:29Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-d215ec3732ad4864a52cde680c1ae5c82023-11-23T21:48:08ZengMDPI AGSensors1424-82202022-09-012219737310.3390/s22197373Electronic Tunability and Cancellation of Serial Losses in Wire CoilsRoman Sotner0Jan Jerabek1Ladislav Polak2Radek Theumer3Lukas Langhammer4Department of Radio Electronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3082/12, 616 00 Brno, Czech RepublicDepartment of Telecommunications, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3082/12, 616 00 Brno, Czech RepublicDepartment of Radio Electronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3082/12, 616 00 Brno, Czech RepublicDepartment of Radio Electronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3082/12, 616 00 Brno, Czech RepublicDepartment of Radio Electronics, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technicka 3082/12, 616 00 Brno, Czech RepublicThis work presents a novel methodology to adjust the inductance of real coils (electronically) and to cancel out serial losses (up to tens or even hundreds of Ohms in practice) electronically. This is important in various fields of electromagnetic sensors (inductive sensors), energy harvesting, measurement and especially in the instrumentation of various devices. State-of-the-art methods do not solve the problem of cancellation of real serial resistance, which is the most important parasitic feature in low- and middle-frequency bands. In this case, the employment of serial negative resistance is not possible due to stability issues. To solve this issue, two solutions allowing the cancellation of serial resistance by the value of the passive element and an electronically adjustable parameter are introduced. The operational ranges are between 0.1 and 1 mH and 0.1 and 10 mH, valid in bandwidths from hundreds of Hz up to hundreds of kHz. The proposed concepts are experimentally tested in two applications: an electronically tunable oscillator of LC type and an electronically tunable band-pass RLC filter. The presented methodology offers significant improvements in the process of circuit design employing inductors and can be beneficially used for on-chip design, where serial resistance issues can be very significant.https://www.mdpi.com/1424-8220/22/19/7373active filtercurrent conveyorelectronic adjustmentinductance simulatorloss cancellationoscillator |
| spellingShingle | Roman Sotner Jan Jerabek Ladislav Polak Radek Theumer Lukas Langhammer Electronic Tunability and Cancellation of Serial Losses in Wire Coils Sensors active filter current conveyor electronic adjustment inductance simulator loss cancellation oscillator |
| title | Electronic Tunability and Cancellation of Serial Losses in Wire Coils |
| title_full | Electronic Tunability and Cancellation of Serial Losses in Wire Coils |
| title_fullStr | Electronic Tunability and Cancellation of Serial Losses in Wire Coils |
| title_full_unstemmed | Electronic Tunability and Cancellation of Serial Losses in Wire Coils |
| title_short | Electronic Tunability and Cancellation of Serial Losses in Wire Coils |
| title_sort | electronic tunability and cancellation of serial losses in wire coils |
| topic | active filter current conveyor electronic adjustment inductance simulator loss cancellation oscillator |
| url | https://www.mdpi.com/1424-8220/22/19/7373 |
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