This paper presented a modified low-power recovery system for implanted micro-system devices to s... more This paper presented a modified low-power recovery system for implanted micro-system devices to stimulate nerves and muscles. The modified system based on ASK modulation techniques and efficient class-E power amplifier, and operated at low-frequency band 13.56 MHZ to avoid the tissue damage according to the industrial, scientific, medical (ISM) band, with low modulation index 15.6% to achieve minimum power consumption.
Journal of Mechanics in Medicine and Biology, Dec 1, 2012
This paper presents a fully integrated system for implanted micro-system devices with efficient p... more This paper presents a fully integrated system for implanted micro-system devices with efficient power and data transfer based on amplitude shift keying (ASK) modulation techniques. A proposed efficient class-E power amplifier is presented. The design presents a full transcutaneous inductive powering system to transfer power and data from an outside human body to implanted devices such as implanted microsystems to stimulate and monitor the nerves and muscles with low band frequency of 13.56 MHz according to the industrial–scientific–medical (ISM) band to avoid the tissue damage. A novel ASK demodulator powered with 1.9 V is proposed with a power recovery system. The modulation index is 13% and the modulation rate 7.3% with data rate 1 Mbit/s, and with power efficiency 66%. The system has been designed using 0.35-μm fabricated CMOS technology. The mathematical model is given and the design is simulated using OrCAD PSpice 16.2 software tool and for real-time simulation, the electronic workbench MULISIM 11 has been used to simulate the class-E power amplifier.
Electronic bio-implanted medical devices are essential due to their effectiveness in monitoring, ... more Electronic bio-implanted medical devices are essential due to their effectiveness in monitoring, disease diagnosis, patient comfort, and safety. Recently, significant efforts have been undertaken to develop implantable and wireless telemetric biomedical systems. Topics such as appropriate near-field wireless communication design, power use, monitoring devices, high-efficiency energy transfer from external to internal parts (implanted), high communication rates, and the need for low energy consumption all significantly influence the advancement of implantable systems. This study reviews various topics related to near-field wireless power transfer (WPT)-based biomedical applications, including WPT types, comparison of WPT types and methods for medical devices, data transmission for WPT-based modulation techniques, and biomedical implantable systems-based WPT. In addition, it extracts research on WPT topologies with related mathematical models—such as power transfer, transfer efficienc...
Wireless power transfer technology features shorter power transmission distances in biomedical ap... more Wireless power transfer technology features shorter power transmission distances in biomedical applications. This is a result of the small size of the implanted coils, biocompatible material conductivity, and the large distances between the receiving and transmitting coils. There have been numerous attempts to improve the power transfer efficiency across longer distances. Multiple coils, including 2-, 3-, 4-, and multi-layered coils, were previously considered. This study proposes a novel approach to achieve higher power transmission efficiency by integrating a single coil on the receiving side and three asymmetric coils on the transmitter side. As such, it delivers power to the sensor implanted within the coronary artery that monitors the blood pressure while introducing a uniquely shaped stent. The efficiency of power transmitted to the stent in its dual implanted forms, helical and zigzag helical, was examined as well, with the wireless power transmission system thereby analyzed ...
This paper presents a modified design of low power recovery circuit in micro-system implanted dev... more This paper presents a modified design of low power recovery circuit in micro-system implanted device to stimulate the human nerve and muscle. The amplitude shift keying ASK was used to modulate data by using operating frequency 6.78MHz ISM industrial scientific medical band to be less invasive to tissue. The proposed system consists of an external part which has ASK modulator and class-E power amplifier with 94.5% efficiency. The internal part has half wave rectifier and voltage regulator to generate very stable 1.8VDC using 0.35um CMOS technology. The Orcad pspice 16.6 and MULTISIM 11 software were used to simulate the design of power recovery and class-E power amplifier respectively. The regulated voltage utilised to power the sub-electronic device implanted inside human body with very stable voltage even change implanted load resistance. The proposed system has 12.5%modulation index and low power consumption.
The inductive coupling link technique is popularly used for transmitting power in many biomedical... more The inductive coupling link technique is popularly used for transmitting power in many biomedical applications, where it helps in transferring power to numerous implanted biomedical devices like a wireless pressure sensor system. It has also been noted that the inductive coupling variables significantly affect the coupling efficiency. In this study, the researchers have investigated the inductive coupling link variables for 3 transmitter coils and one receiver coil. They used a resonant frequency of 27 MHz as the operating frequency, based on the Industrial, Scientific and Medical (ISM) band. The experimental results indicated that the Voltage gain (i.e., Vgain) value of the inductive links was dependent on the Coupling Factor (K) existing between every coil and load resistance (i.e., Rload). It was also noted that the value of the Voltage gain increased with an increase in the implanted resistance, based on a constant coupling factor. Furthermore, the simulation results indicated t...
Indonesian Journal of Electrical Engineering and Computer Science, 2022
In this study, the researchers have proposed an alternative technique for designing an asymmetric... more In this study, the researchers have proposed an alternative technique for designing an asymmetric 4 coil-resonance coupling module based on the series-to-parallel topology at 27 MHz industrial scientific medical (ISM) band to avoid the tissue damage, for the constant monitoring of the in-stent restenosis coronary artery. This design consisted of 2 components, i.e., the external part that included 3 planar coils that were placed outside the body and an internal helical coil (stent) that was implanted into the coronary artery in the human tissue. This technique considered the output power and the transfer efficiency of the overall system, coil geometry like the number of coils per turn, and coil size. The results indicated that this design showed an 82% efficiency in the air if the transmission distance was maintained as 20 mm, which allowed the wireless power supply system to monitor the pressure within the coronary artery when the implanted load resistance was 400 Ω.
Abstract—This paper presented a modified efficient inductive powering link based on ASK modulator... more Abstract—This paper presented a modified efficient inductive powering link based on ASK modulator and proposed efficient class-E power amplifier. The design presents the external part which is located outside the body to transfer power and data to the implanted devices such as implanted Microsystems to stimulate and monitoring the nerves and muscles. The system operated with low band frequency 10MHZ according to industrial-scientific–medical (ISM) band to avoid the tissue heating.
2017 2nd -AL-Sadiq International Science Conference on Multidisciplinary in IT and Communication Science and Technologies - 2nd- AIC – MITC – Baghdad – IRAQ, 2017
A miniaturized wideband bandpass filter (BPF) substrate integrated waveguide (SIW) has been propo... more A miniaturized wideband bandpass filter (BPF) substrate integrated waveguide (SIW) has been proposed in this paper for the operation in X-band applications. The design of the suggested filter is carried out by etching a complementary folded ring resonator (CFRR) cell embedded with a meander line slot on the top layer of the structure. The filter performance has been evaluated of the proposed filter have been carried out using the Microwave Studio Suite, CST electromagnetic simulator. A parametric study has been conducted to explore the influence the various filter elements on its performance. The results show that the application of the (CFRR) cells makes the filter to possess a more compact size and a broader bandwidth. The SIW cavity dimensions are 13 × 9.4 mm 2 while the overall filter dimensions are 18 × 10 mm 2 using a substrate having a relative dielectric constant of 6 and thickness of 0.508 mm. The realized results demonstrate a return loss of less than-45 dB and insertion l...
This paper presented a modified low-power recovery system for implanted micro-system devices to s... more This paper presented a modified low-power recovery system for implanted micro-system devices to stimulate nerves and muscles. The modified system based on ASK modulation techniques and efficient class-E power amplifier, and operated at low-frequency band 13.56 MHZ to avoid the tissue damage according to the industrial, scientific, medical (ISM) band, with low modulation index 15.6% to achieve minimum power consumption.
Journal of Mechanics in Medicine and Biology, Dec 1, 2012
This paper presents a fully integrated system for implanted micro-system devices with efficient p... more This paper presents a fully integrated system for implanted micro-system devices with efficient power and data transfer based on amplitude shift keying (ASK) modulation techniques. A proposed efficient class-E power amplifier is presented. The design presents a full transcutaneous inductive powering system to transfer power and data from an outside human body to implanted devices such as implanted microsystems to stimulate and monitor the nerves and muscles with low band frequency of 13.56 MHz according to the industrial–scientific–medical (ISM) band to avoid the tissue damage. A novel ASK demodulator powered with 1.9 V is proposed with a power recovery system. The modulation index is 13% and the modulation rate 7.3% with data rate 1 Mbit/s, and with power efficiency 66%. The system has been designed using 0.35-μm fabricated CMOS technology. The mathematical model is given and the design is simulated using OrCAD PSpice 16.2 software tool and for real-time simulation, the electronic workbench MULISIM 11 has been used to simulate the class-E power amplifier.
Electronic bio-implanted medical devices are essential due to their effectiveness in monitoring, ... more Electronic bio-implanted medical devices are essential due to their effectiveness in monitoring, disease diagnosis, patient comfort, and safety. Recently, significant efforts have been undertaken to develop implantable and wireless telemetric biomedical systems. Topics such as appropriate near-field wireless communication design, power use, monitoring devices, high-efficiency energy transfer from external to internal parts (implanted), high communication rates, and the need for low energy consumption all significantly influence the advancement of implantable systems. This study reviews various topics related to near-field wireless power transfer (WPT)-based biomedical applications, including WPT types, comparison of WPT types and methods for medical devices, data transmission for WPT-based modulation techniques, and biomedical implantable systems-based WPT. In addition, it extracts research on WPT topologies with related mathematical models—such as power transfer, transfer efficienc...
Wireless power transfer technology features shorter power transmission distances in biomedical ap... more Wireless power transfer technology features shorter power transmission distances in biomedical applications. This is a result of the small size of the implanted coils, biocompatible material conductivity, and the large distances between the receiving and transmitting coils. There have been numerous attempts to improve the power transfer efficiency across longer distances. Multiple coils, including 2-, 3-, 4-, and multi-layered coils, were previously considered. This study proposes a novel approach to achieve higher power transmission efficiency by integrating a single coil on the receiving side and three asymmetric coils on the transmitter side. As such, it delivers power to the sensor implanted within the coronary artery that monitors the blood pressure while introducing a uniquely shaped stent. The efficiency of power transmitted to the stent in its dual implanted forms, helical and zigzag helical, was examined as well, with the wireless power transmission system thereby analyzed ...
This paper presents a modified design of low power recovery circuit in micro-system implanted dev... more This paper presents a modified design of low power recovery circuit in micro-system implanted device to stimulate the human nerve and muscle. The amplitude shift keying ASK was used to modulate data by using operating frequency 6.78MHz ISM industrial scientific medical band to be less invasive to tissue. The proposed system consists of an external part which has ASK modulator and class-E power amplifier with 94.5% efficiency. The internal part has half wave rectifier and voltage regulator to generate very stable 1.8VDC using 0.35um CMOS technology. The Orcad pspice 16.6 and MULTISIM 11 software were used to simulate the design of power recovery and class-E power amplifier respectively. The regulated voltage utilised to power the sub-electronic device implanted inside human body with very stable voltage even change implanted load resistance. The proposed system has 12.5%modulation index and low power consumption.
The inductive coupling link technique is popularly used for transmitting power in many biomedical... more The inductive coupling link technique is popularly used for transmitting power in many biomedical applications, where it helps in transferring power to numerous implanted biomedical devices like a wireless pressure sensor system. It has also been noted that the inductive coupling variables significantly affect the coupling efficiency. In this study, the researchers have investigated the inductive coupling link variables for 3 transmitter coils and one receiver coil. They used a resonant frequency of 27 MHz as the operating frequency, based on the Industrial, Scientific and Medical (ISM) band. The experimental results indicated that the Voltage gain (i.e., Vgain) value of the inductive links was dependent on the Coupling Factor (K) existing between every coil and load resistance (i.e., Rload). It was also noted that the value of the Voltage gain increased with an increase in the implanted resistance, based on a constant coupling factor. Furthermore, the simulation results indicated t...
Indonesian Journal of Electrical Engineering and Computer Science, 2022
In this study, the researchers have proposed an alternative technique for designing an asymmetric... more In this study, the researchers have proposed an alternative technique for designing an asymmetric 4 coil-resonance coupling module based on the series-to-parallel topology at 27 MHz industrial scientific medical (ISM) band to avoid the tissue damage, for the constant monitoring of the in-stent restenosis coronary artery. This design consisted of 2 components, i.e., the external part that included 3 planar coils that were placed outside the body and an internal helical coil (stent) that was implanted into the coronary artery in the human tissue. This technique considered the output power and the transfer efficiency of the overall system, coil geometry like the number of coils per turn, and coil size. The results indicated that this design showed an 82% efficiency in the air if the transmission distance was maintained as 20 mm, which allowed the wireless power supply system to monitor the pressure within the coronary artery when the implanted load resistance was 400 Ω.
Abstract—This paper presented a modified efficient inductive powering link based on ASK modulator... more Abstract—This paper presented a modified efficient inductive powering link based on ASK modulator and proposed efficient class-E power amplifier. The design presents the external part which is located outside the body to transfer power and data to the implanted devices such as implanted Microsystems to stimulate and monitoring the nerves and muscles. The system operated with low band frequency 10MHZ according to industrial-scientific–medical (ISM) band to avoid the tissue heating.
2017 2nd -AL-Sadiq International Science Conference on Multidisciplinary in IT and Communication Science and Technologies - 2nd- AIC – MITC – Baghdad – IRAQ, 2017
A miniaturized wideband bandpass filter (BPF) substrate integrated waveguide (SIW) has been propo... more A miniaturized wideband bandpass filter (BPF) substrate integrated waveguide (SIW) has been proposed in this paper for the operation in X-band applications. The design of the suggested filter is carried out by etching a complementary folded ring resonator (CFRR) cell embedded with a meander line slot on the top layer of the structure. The filter performance has been evaluated of the proposed filter have been carried out using the Microwave Studio Suite, CST electromagnetic simulator. A parametric study has been conducted to explore the influence the various filter elements on its performance. The results show that the application of the (CFRR) cells makes the filter to possess a more compact size and a broader bandwidth. The SIW cavity dimensions are 13 × 9.4 mm 2 while the overall filter dimensions are 18 × 10 mm 2 using a substrate having a relative dielectric constant of 6 and thickness of 0.508 mm. The realized results demonstrate a return loss of less than-45 dB and insertion l...
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Papers by Saad Mutashar