Saad Mutashar

• Assist. Prof. Phd
• Lecturer at Al-Mustaqbal University

This study aims to evaluate the factors that influence the successful completion of graduation projects, focusing on both theoretical and practical aspects, team dynamics, supervisor involvement, and overall student satisfaction. The goal is to identify challenges and provide recommendations to improve the quality of graduation projects in the futu...

Tissue engineering, a burgeoning multidisciplinary field, seeks to repair or replace damaged tissues and organs by leveraging engineering and biological principles. Central to the advancement of this field is the ability to monitor tissue growth in real-time. This necessitates the use of implantable devices, such as sensors, which need to be powere...

Piezoresistive pressure sensors have transformed biomedical applications, enabling precise diagnostics and monitoring. This concise review explores the fundamental principles, key components, and fabrication techniques of piezoresistive pressure sensors, focusing on critical performance metrics such as sensitivity, accuracy, and response time. Biom...

The shift towards cars electric vehicle (EVs) plays a role in the global effort to combat climate change by reducing dependence on fossil fuels. An important part of this shift involves creating user EV charging systems. This study looks into how a connected coil design in a wireless power transfer system can help overcome challenges in EV charg...

Bio-implanted medical devices with electronic components play a crucial role due to their effectiveness in monitoring and diagnosing diseases, enhancing patient comfort, and ensuring safety. Recently, significant efforts have been conducted to develop implantable and wireless telemetric biomedical systems. Topics such as appropriate near-field wire...

adopting facial expressions in automatic pain recognition is a complicated matter that has intrigued the interest of the scientific community. This paper provides a performance comparison between different Deep Convolution Neural Network (DCNN) architectures with different deepnesses (number of layers and connections): ResNet-50 and DenseNet-121. T...

Undetected pain threatens the quality of human life by prevents them from understanding the nature of their pain. Therefore, an urgent need to find an alternative that can recognize pain in patients suffering from difficulty in express their pain for reasons related to age or the ability of explain feeling of pain. The structure of a proposed syste...

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, monitor...

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...

This paper put forward the design and modeling pertaining to a wireless pressure sensor that can monitor blood pressure within the coronary artery with the help of a capacitive pressure sensor. To adjust the resonance frequency (26.78–27.09 MHz) with regards to this sensor’s applied pressure (0–30 KPa), sensor’s dimension as well as human blood pre...

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...

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...

Nowadays the technological advancement of the information transmission is developing very rapidly and it becomes necessary to achieve a high speed in the transmission of data as well as higher data rate. Developments in optical communication systems address these needs. However, despite all the features and advantages of optical communication syste...

Confusion detection systems (CDSs) that need Noninvasive, mobile, and cost-effective methods use facial expressions as a technique to detect confusion. In previous works, the technology that the system used represents a major gap between this proposed CDS and other systems. This CDS depends on the Facial Action Coding System (FACS) that is used to...

Pain is considered as an emotional experience and a restless feeling associated with tissue damage. When the interpretation begins in the brain, the sensation of pain occurs; a signal transmitted to the brain through the nerve fiber. Pain helps the body to stop further damage to the tissues. Since there are numerous ways to convey and feel pain, th...

This paper deals with designing a simple and efficient simultaneous inductive power and data transmission for transcutaneous Micro-system based on ASK modulation at 6,78 MHz industrial, scientific, and medical (ISM) band to avoid the tissue damage. The modified ASK modulator and inductive coupling link driven by efficient Class-E power amplifier wi...

In-stent restenosis concerning the coronary artery refers to the blood clotting-caused re-narrowing of the blocked section of the artery, which is opened using a stent. The failure rate for stents is in the range of 10% to 15%, where they do not remain open, thereby leading to about 40% of the patients with stent implantations requiring repeat proc...

The efficiency of a WPT system greatly depends on both the geometry and operating frequency of the transmitting and receiving structures. Genetic optimizations algorithms are presented to prepare the proposed design parameters using MATLAB to optimize the link efficiency. Single and double layer PSCs are optimally designed with minimal proximity lo...

The efficiency of the wireless power transfer system is greatly affected by the geometry of the planar spiral coils and operating frequency. The size of the implanted PSC is the main challenge to the designers. In this paper, the generic optimizations algorithms are used to prepare the proposed design parameters using the MATLAB program to optimize...

Abstract The efficiency of a WPT system greatly depends on both the geometry and operating frequency of the transmitting and receiving structures. Genetic optimizations algorithms are presented to prepare the proposed design parameters using MATLAB to optimize the link efficiency. Single and double layer PSCs are optimally designed with minimal pro...

Human motion detection, classification, and perceiving, the dynamics of moving objects in the environment, are crucial in many applications. Many sensors have been used to this detection; the radar represents one of the promising sensors. Kalman filter (KF) and convolutional neural network (CNN) represents a powerful tool for estimation and classif...

Mobile robots are expected to be used in harsh and non-organized environments. Such as the applications that robots need to Collection of information from complex conditions for their functioning which have become very common, especially in places that are hard to reach by humans. The wireless capability, avoid obstacles and speed/position controll...

Abstract: Human motion detection, classification, and perceiving, the dynamics of moving objects in the environment, are crucial in many applications. Many sensors have been used to this detection; the radar represents one of the promising sensors. Kalman filter (KF) and convolutional neural network (CNN) represents a powerful tool for estimation a...

This paper introduces a new hybrid E/F power amplifier for subcutaneous applications. The proposed design is based on Amplitude Shift Keying (ASK) modulation technique with Industrial Scientific Medical (ISM) band operating at 135 kHz to avoid the tissue damage. The Hybrid E/F power amplifier combines the tuning network circuits and uses a control...

One of the major problems of the inductive coupling link in the biomedical implantable devices is the misalignment between coils. This paper produces two simple suggested methods to avoid and reduce the misalignment between two coils. The first one is to split the implanted coil into two identical coils with 450 μH of inductance where the external...

In this paper, a combination of the dual-mode technique and the fractal based resonator geometry has been adopted to design a compact band reject filter. The proposed filter structure relies mainly on that of the triangular patch resonators with an embedded slit structure. The Koch fractal geometry has been applied to the uncoupled side lengths of...

In this paper, the mathematical analysis and optimization of inductive power transmission system with serial to parallel topology for implanted biomedical devices is presented. The mathematical analysis based on the mesh coupling method is used to determine the dissipated power on the implanted remote electronics. In addition, the reflected impedan...

This paper introduce the designand implementation of an efficient electronic circuit to power and transfer data to the internal implantable biomedical devices. The proposed system is designed and implemented using ASK modulation techniques at 10 MHz operated frequency with 11.6 % of modulation index. The system involves a modified ASK modulator, a...

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...

This paper deals to design and investigated two proposed loop antenna for pill shaped bio-implants objects such as wireless capsule endoscopy. In additional it's help in developing an understanding of how the fields decay with distance. The first proposed loop antenna is the planar printed square loop antenna with outer dimensions 9 mm and inner di...

This paper present an efficient micro-system stimulator to transfer data and power in biomedical implanted device by using Amplitude shift keying (ASK) modulation technique. The proposed system operates with low frequency 6.78MHz accordance to the industrial-scientific-medical (ISM) bands to avoid the biological tissue damage. The system design inc...

Unique design of inductive coupling links is very essential in designing batteries bio-implantable devices. This paper, introduce a small size and efficient spiral circular coils (pancake) at 6.78 MHz to be used for bio-implantable devices. A mathematical model for the proposed coil is developed based on the number and width of turns for each coil...

Switch mode power amplifier is used in biomedical devices widely. The power amplifier supplies the required operating power to the implanted devices. Zero voltage switching (ZVS) operation of class-E power amplifier leads to convert DC voltage to AC with high efficiency and workings frequency. Frequency has a great function in powering most of the...

With the development of communication technologies, the use of wireless systems in biomedical implanted devices has become very useful. Bio-implantable devices are electronic devices which are used for treatment and monitoring brain implants, pacemakers, cochlear implants, retinal implants and so on. The inductive coupling link is used to transmit...

The use of wireless communication using inductive links to transfer data and power to implantable microsystems to stimulate and monitor nerves and muscles is increasing. This paper deals with the development of the theoretical analysis and optimization of an inductive link based on coupling and on spiral circular coil geometry. The coil dimensions...

The development of implanted devices is essential because of their direct effect on the lives and safety of humanity. This paper presents the current issues and challenges related to all methods used to harvest energy for implantable biomedical devices. The advantages, disadvantages, and future trends of each method are discussed. The concept of ha...

This paper deals with the development of bio-implanted micro-system with low-power and high data rate based on amplitude shift keying (ASK) modulation technique to stimulate nerves and muscles. The modified system is operated by a low-frequency band 13.56 MHz according to the industrial-scientific-medical (ISM) bands to avoid the biological tissue...

Abstract Use of transcutaneous inductive links is a widely known method for the wireless powering of bio-implanted devices such as implanted microsystems. The design of the coil for inductive links is generally not optimal. In this study, inductive links were used on the basis of the small loop antenna theory to reduce the effects of lateral coil m...

The implanted biomedical devices require very efficient RF-DC rectified signal, which provides the essential DC voltage, delivered to the implanted device. In this paper, a switch-only rectifier based on CMOS switch controlled by a timing control circuit is used to improve the rectified signal. This rectifier is used instead of the conventional rec...

This paper deals with the modified wireless power transmission system for biomedical implanted devices. The system consists of efficient class-E power amplifier and inductive power links based on spiral circular transmitter and receiver coils. The model of the class-E power amplifier operated with 13.56 MHz is designed, discussed and analyzed in wh...

Abstract|This paper deals with the design of small-sized bio- implanted spiral circular coils (pancake) with an operating frequency of 13.56 MHz. The external and internal coils' geometric dimensions are dout = 56 mm, din = 10mm and dout = 11:6 mm, din = 5 mm, respectively, in which the electrical performance is veri¯ed through the commercial ¯eld...

This paper presents a modified sub-electronic circuit with low-power recovery circuits to be implemented in implanted micro-sensor used to stimulate the human and animals' nerves and muscles. The system based on ASK modulation techniques operated with 13.56 MHz according to industrial, scientific, medical (ISM). The modulation index is 12.6% to ach...

This paper presented a proposed design for transcutaneous inductive powering links. The design used 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 13.56 MHZ according to industrial- scientific – medical (ISM) band to a...

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 MH Z to avoid the tissue damage according to the industrial, scientific, medical (ISM) ba...

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 s...

This paper presents a fully integrated system for implanted micro-system devices with e±cient power and data transfer based on amplitude shift keying (ASK) modulation techniques. A proposed e±cient class-E power ampli¯er is presented. The design presents a full transcutaneous inductive powering system to transfer power and data from an outside huma...

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 sy...

__ Inductive coupling link is widely used in transcutaneous power transmission to transfer data and power to the implanted biomedical devices such as implanted micro-sensor system. The inductive coupling variables play a strong rule in coupling efficiency. In this paper the coupling link variables is investigated and analyzed. The resonant frequenc...

This paper introduces a modified an efficient design for different Class-E power amplifiers suitable to be use in biomedical implantable devices and in biomedical wireless telemetry devices which is usually have a small load resistor (several Ohms) due to its inductive powering. The different Class-E amplifiers operated according to the frequency c...

This paper introduces a modified an efficient design for different Class-E power amplifiers suitable to be use in biomedical implantable devices and in biomedical wireless telemetry devices which is usually have a small load resistor (several Ohms) due to its inductive powering. The different Class-E amplifiers operated according to the frequency c...

Implanted medical devices are very important electronic devices because of their usefulness in monitoring and diagnosis, safety and comfort for patients. Since 1950s, remarkable efforts have been undertaken for the development of bio-medical implanted and wireless telemetry bio-devices. Issues such as design of suitable modulation methods, use of p...

In this paper, the current mechanisms and theoretical performance as solar cell of hydrogenated amorphous silicon/ crystalline silicon heterojunction are evaluated also their dependence with the amorphous silicon doping level ND, the interface states density are studied. We have found that the dominant dark current mechanism is multitunnelling acro...