Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants
The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite chal...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Cheng, Yuhua [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2017 |
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| Schlagwörter: |
millimeter-sized solenoid coils |
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| Übergeordnetes Werk: |
Enthalten in: IEEE transactions on microwave theory and techniques - New York, NY : IEEE, 1963, 65(2017), 3, Seite 1024-1035 |
|---|---|
| Übergeordnetes Werk: |
volume:65 ; year:2017 ; number:3 ; pages:1024-1035 |
| Links: |
|---|
| DOI / URN: |
10.1109/TMTT.2016.2627564 |
|---|
| Katalog-ID: |
OLC1991977239 |
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| 520 | |a The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. | ||
| 650 | 4 | |a Load modeling | |
| 650 | 4 | |a Solenoids | |
| 650 | 4 | |a millimeter-sized solenoid coils | |
| 650 | 4 | |a Implants | |
| 650 | 4 | |a wireless power transmission (WPT) | |
| 650 | 4 | |a Magnetic separation | |
| 650 | 4 | |a Analytical model | |
| 650 | 4 | |a Analytical models | |
| 650 | 4 | |a distributed neural interface | |
| 650 | 4 | |a Optimization | |
| 650 | 4 | |a Coils | |
| 700 | 1 | |a Wang, Gaofeng |4 oth | |
| 700 | 1 | |a Ghovanloo, Maysam |4 oth | |
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10.1109/TMTT.2016.2627564 doi PQ20170721 (DE-627)OLC1991977239 (DE-599)GBVOLC1991977239 (PRQ)c1314-75efe164f3b399b8d5d6011545bc534fc1f1c894846f142977f372ae8ae2191a0 (KEY)0017514520170000065000301024analyticalmodelingandoptimizationofsmallsolenoidco DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Cheng, Yuhua verfasserin aut Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. Load modeling Solenoids millimeter-sized solenoid coils Implants wireless power transmission (WPT) Magnetic separation Analytical model Analytical models distributed neural interface Optimization Coils Wang, Gaofeng oth Ghovanloo, Maysam oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 65(2017), 3, Seite 1024-1035 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:65 year:2017 number:3 pages:1024-1035 http://dx.doi.org/10.1109/TMTT.2016.2627564 Volltext http://ieeexplore.ieee.org/document/7801885 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_4313 53.00 AVZ AR 65 2017 3 1024-1035 |
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10.1109/TMTT.2016.2627564 doi PQ20170721 (DE-627)OLC1991977239 (DE-599)GBVOLC1991977239 (PRQ)c1314-75efe164f3b399b8d5d6011545bc534fc1f1c894846f142977f372ae8ae2191a0 (KEY)0017514520170000065000301024analyticalmodelingandoptimizationofsmallsolenoidco DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Cheng, Yuhua verfasserin aut Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. Load modeling Solenoids millimeter-sized solenoid coils Implants wireless power transmission (WPT) Magnetic separation Analytical model Analytical models distributed neural interface Optimization Coils Wang, Gaofeng oth Ghovanloo, Maysam oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 65(2017), 3, Seite 1024-1035 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:65 year:2017 number:3 pages:1024-1035 http://dx.doi.org/10.1109/TMTT.2016.2627564 Volltext http://ieeexplore.ieee.org/document/7801885 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_4313 53.00 AVZ AR 65 2017 3 1024-1035 |
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10.1109/TMTT.2016.2627564 doi PQ20170721 (DE-627)OLC1991977239 (DE-599)GBVOLC1991977239 (PRQ)c1314-75efe164f3b399b8d5d6011545bc534fc1f1c894846f142977f372ae8ae2191a0 (KEY)0017514520170000065000301024analyticalmodelingandoptimizationofsmallsolenoidco DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Cheng, Yuhua verfasserin aut Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. Load modeling Solenoids millimeter-sized solenoid coils Implants wireless power transmission (WPT) Magnetic separation Analytical model Analytical models distributed neural interface Optimization Coils Wang, Gaofeng oth Ghovanloo, Maysam oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 65(2017), 3, Seite 1024-1035 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:65 year:2017 number:3 pages:1024-1035 http://dx.doi.org/10.1109/TMTT.2016.2627564 Volltext http://ieeexplore.ieee.org/document/7801885 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_4313 53.00 AVZ AR 65 2017 3 1024-1035 |
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10.1109/TMTT.2016.2627564 doi PQ20170721 (DE-627)OLC1991977239 (DE-599)GBVOLC1991977239 (PRQ)c1314-75efe164f3b399b8d5d6011545bc534fc1f1c894846f142977f372ae8ae2191a0 (KEY)0017514520170000065000301024analyticalmodelingandoptimizationofsmallsolenoidco DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Cheng, Yuhua verfasserin aut Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. Load modeling Solenoids millimeter-sized solenoid coils Implants wireless power transmission (WPT) Magnetic separation Analytical model Analytical models distributed neural interface Optimization Coils Wang, Gaofeng oth Ghovanloo, Maysam oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 65(2017), 3, Seite 1024-1035 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:65 year:2017 number:3 pages:1024-1035 http://dx.doi.org/10.1109/TMTT.2016.2627564 Volltext http://ieeexplore.ieee.org/document/7801885 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_4313 53.00 AVZ AR 65 2017 3 1024-1035 |
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10.1109/TMTT.2016.2627564 doi PQ20170721 (DE-627)OLC1991977239 (DE-599)GBVOLC1991977239 (PRQ)c1314-75efe164f3b399b8d5d6011545bc534fc1f1c894846f142977f372ae8ae2191a0 (KEY)0017514520170000065000301024analyticalmodelingandoptimizationofsmallsolenoidco DE-627 ger DE-627 rakwb eng 620 DNB 53.00 bkl Cheng, Yuhua verfasserin aut Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants 2017 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. Load modeling Solenoids millimeter-sized solenoid coils Implants wireless power transmission (WPT) Magnetic separation Analytical model Analytical models distributed neural interface Optimization Coils Wang, Gaofeng oth Ghovanloo, Maysam oth Enthalten in IEEE transactions on microwave theory and techniques New York, NY : IEEE, 1963 65(2017), 3, Seite 1024-1035 (DE-627)129547344 (DE-600)218509-X (DE-576)01499822X 0018-9480 nnns volume:65 year:2017 number:3 pages:1024-1035 http://dx.doi.org/10.1109/TMTT.2016.2627564 Volltext http://ieeexplore.ieee.org/document/7801885 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 GBV_ILN_2004 GBV_ILN_2016 GBV_ILN_4313 53.00 AVZ AR 65 2017 3 1024-1035 |
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However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. 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analytical modeling and optimization of small solenoid coils for millimeter-sized biomedical implants |
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Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants |
| abstract |
The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. |
| abstractGer |
The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. |
| abstract_unstemmed |
The new trend towards minimally invasive millimeter-sized and free-floating distributed implants promises to enable emerging applications, such as chronic neural recording with minimal damage to the surrounding tissue. However, wireless power transmission (WPT) to these medical devices is quite challenging. The magnetic field produced by external transmitter (Tx) coils at the position of small implants can be considered homogeneous to separate the optimization of Tx and receiver (Rx) coils for efficient WPT. This paper focuses on the optimization of the solenoid-type Rx coils, which are suitable for this application. We have developed an analytical model of solenoid coils that includes the impact of tissue and coating around the coils, verified through simulations and measurements. Using the proposed model, under a given size restriction and a specific load, we find the optimal operating frequency and coil geometry to maximize a figure of merit (FoM) for the Rx that includes the loaded quality factor and its internal efficiency as well as a factor related to the coupling coefficient. For a millimeter-sized coil, the optimal operating frequency for the Rx and the number of turns are found to be 500 MHz and six, respectively, if the coil is closely wound using AWG36 copper wires. If the pitch is also optimized, then 700 MHz and four turns provide the best FoM for the solenoid Rx. |
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Analytical Modeling and Optimization of Small Solenoid Coils for Millimeter-Sized Biomedical Implants |
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