Abdullah Eroglu - Academia.edu (original) (raw)
Papers by Abdullah Eroglu
The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI p... more The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI problem occurring in the units. From the drive of an efficient model development of the ECM for HVAC system, a new hierarchical model proposed. This model includes simulation model, standards description, and experimental results. Estimation of conducted EMI by using computer simulation in advance gives the opportunity to design an efficient, and cost effective EMI filter, which meets the law. This manuscript presents simulation and common mode noise measurement modeling, PCB parasitic, drive system modeling, and an EMI filter for an HVAC motor. It is possible to predict conducted EMI emissions from the ECMs from the simulation circuit based on the developed models. Comparison of simulation result and the experimental result shows that they are to be in agreement.
International Journal of Research in Education Methodology, Apr 30, 2013
International Journal of Research in Education Methodology, 2013
Measurement and Instrumentation fundamentals are introduced to electrical and mechanical engineer... more Measurement and Instrumentation fundamentals are introduced to electrical and mechanical engineering students via unique joint course for Electrical and Mechanical Engineering Programs of Purdue University at Fort Wayne Campus. The course has a laboratory component that engages students with practice and illustrates how to apply theory. The students are grouped to conduct experiments in a multidisciplinary format. It has been observed that this type of unique joint course motivates students to solve engineering problems from different perspectives and improves teamwork.
Applied Computational Electromagnetics Society Journal, 2010
Design, simulation, and implementation of microstrip spiral inductors for RF applications at the ... more Design, simulation, and implementation of microstrip spiral inductors for RF applications at the high frequency (HF) range are given. The simplified lumped element equivalent model parameters for spiral inductor are used to obtain the initial physical dimensions for the design. The spiral inductor is then simulated with planar electromagnetic simulator, Sonnet, using the geometry constructed with the physical dimensions obtained for the desired inductance value. The parametric study of the spiral inductor is conducted to investigate the variation on its quality factor, self resonance frequency and inductance value. The spiral inductor is then implemented on a 100mil Alumina substrate and measured in the laboratory. The measurement and simulation results are found to be close.
Planar electromagnetic simulator Sonnet has been used to design, simulate, and validate the measu... more Planar electromagnetic simulator Sonnet has been used to design, simulate, and validate the measurement results for the microstrip type directional couplers to sense forward and reflected power in RF power amplifier applications. Two directional couplers for this purpose have been designed, simulated, and their results are compared with the experimental results. The accuracy of the planar electromagnetic simulator Sonnet has been tested on two-line symmetrical and multi-layer three line directional couplers. It has been shown that Sonnet provides accurate results within acceptable error, and hence, can be used in a microstrip directional coupler design for RF power amplifier applications.
Planar electromagnetic simulator Sonnet has been used to identify the source of the non-uniformit... more Planar electromagnetic simulator Sonnet has been used to identify the source of the non-uniformity in current distribution for parallel-connected transistors for high power applications at HF (3-30MHz) range. S-parameters and current distribution of the main board where resonators and transistors are connected are obtained with Sonnet and used in the time- domain non-linear circuit simulator, Pspice, for RF power amplifier simulation. Source current distribution for individual transistors in conjunction with overall amplifier simulation has been used to identify the hot spots for amplifier when it is terminated with matched load and open load under rated power. It is shown that planar electromagnetic simulator, Sonnet, can be used to identify the non-uniformity in source current distribution among transistors in RF power amplifiers.
Applied Computational Electromagnetics Society, 2021
The resonant characteristics of single split ring resonator-based metamaterial devices with singl... more The resonant characteristics of single split ring resonator-based metamaterial devices with single gap are presented using the analytical formulation developed for the lumped element equivalent circuit model. The characteristics of the metamaterial resonators have been investigated for different ring sizes, gap widths and substrate permittivity. Equivalent circuit model is developed for two ring structures. The analytical, and simulation results are compared and verified. The prototype has been then built and measured. It has been observed that all the results agree. The results presented in this paper can be used to develop devices at the THz range that can operate as sensors, antennas or tuning elements.
Applied Computational Electromagnetics Society, 2021
This paper demonstrates a shape synthesis technique for multi-mode dielectric resonator antennas ... more This paper demonstrates a shape synthesis technique for multi-mode dielectric resonator antennas using binary genetic algorithm and characteristic mode analysis. The cost function for the synthesis process is defined from characteristic modal parameters, such as modal quality factors and self-resonance frequencies. Since only modal parameters are involved in the cost function, the shape synthesis process is made independent of feeds. In the paper, we demonstrate the shape synthesis of a DRA with three self-resonant modes at 3 GHz.
Progress In Electromagnetics Research M, 2020
2016 IEEE 7th Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON), 2016
The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI p... more The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI problem occurring in the units. From the drive of an efficient model development of the ECM for HVAC system, a new hierarchical model proposed. This model includes simulation model, standards description, and experimental results. Estimation of conducted EMI by using computer simulation in advance gives the opportunity to design an efficient, and cost effective EMI filter, which meets the law. This manuscript presents simulation and common mode noise measurement modeling, PCB parasitic, drive system modeling, and an EMI filter for an HVAC motor. It is possible to predict conducted EMI emissions from the ECMs from the simulation circuit based on the developed models. Comparison of simulation result and the experimental result shows that they are to be in agreement.
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2015
Introduction to RF Power Amplifier Design and Simulation, 2015
Progress In Electromagnetics Research, 2007
Progress In Electromagnetics Research B, 2013
Progress In Electromagnetics Research B, 2011
Communications and Network, 2012
2013 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), 2013
ABSTRACT Design, simulation, implementation, and measurement of three variations of an F-antenna ... more ABSTRACT Design, simulation, implementation, and measurement of three variations of an F-antenna that can be interfaced with an electric machine in the ultra-high frequency (UHF) range for monitoring and control of an HVAC system wirelessly are presented for the first time. The development is broken down into three stages: ideal antenna optimization and simulation, implementing and testing antennas in an HVAC system, and research into the effects of varying environmental and orientation aspects of the antenna subsystem. The antennas are designed and simulated using the 3D electromagnetic simulator, Ansoft High Frequency Structure Simulator (HFSS). The performance of each antenna including gain, bandwidth and directivity are compared for various conditions. In addition, link quality indicator (LQI) tests were conducted to measure the quality of the communication link for each antenna when they are located in HVAC system. It is shown that the UHF antennas presented in this paper can be used to control and monitor HVAC systems wirelessly using the integrated approach as detailed in this paper. Furthermore, it is also shown that optimization of the antennas via electromagnetic simulator such as HFSS facilitates the design process and improves the performance of the antennas that will be interfaced with electric machines in HVAC systems.
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012
ABSTRACT A low profile UHF RFID antenna is designed using Electromagnetic Bang Gap (EBG) structur... more ABSTRACT A low profile UHF RFID antenna is designed using Electromagnetic Bang Gap (EBG) structures with high permittivity materials. The effect of dielectric permittivity constant, dielectric thickness, feed location, feed types such as probe-fed and inset-fed on antenna gain, bandwidth, and return loss when matching to the feed point has been done using transmission line and cavity models which have been studied extensively with 3D electromagnetic simulator, HFSS. The optimum microstrip patch antenna design method to have an increased reading distance with low profile is presented in detail. The results have been compared with existing results and improvement has been demonstrated.
The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI p... more The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI problem occurring in the units. From the drive of an efficient model development of the ECM for HVAC system, a new hierarchical model proposed. This model includes simulation model, standards description, and experimental results. Estimation of conducted EMI by using computer simulation in advance gives the opportunity to design an efficient, and cost effective EMI filter, which meets the law. This manuscript presents simulation and common mode noise measurement modeling, PCB parasitic, drive system modeling, and an EMI filter for an HVAC motor. It is possible to predict conducted EMI emissions from the ECMs from the simulation circuit based on the developed models. Comparison of simulation result and the experimental result shows that they are to be in agreement.
International Journal of Research in Education Methodology, Apr 30, 2013
International Journal of Research in Education Methodology, 2013
Measurement and Instrumentation fundamentals are introduced to electrical and mechanical engineer... more Measurement and Instrumentation fundamentals are introduced to electrical and mechanical engineering students via unique joint course for Electrical and Mechanical Engineering Programs of Purdue University at Fort Wayne Campus. The course has a laboratory component that engages students with practice and illustrates how to apply theory. The students are grouped to conduct experiments in a multidisciplinary format. It has been observed that this type of unique joint course motivates students to solve engineering problems from different perspectives and improves teamwork.
Applied Computational Electromagnetics Society Journal, 2010
Design, simulation, and implementation of microstrip spiral inductors for RF applications at the ... more Design, simulation, and implementation of microstrip spiral inductors for RF applications at the high frequency (HF) range are given. The simplified lumped element equivalent model parameters for spiral inductor are used to obtain the initial physical dimensions for the design. The spiral inductor is then simulated with planar electromagnetic simulator, Sonnet, using the geometry constructed with the physical dimensions obtained for the desired inductance value. The parametric study of the spiral inductor is conducted to investigate the variation on its quality factor, self resonance frequency and inductance value. The spiral inductor is then implemented on a 100mil Alumina substrate and measured in the laboratory. The measurement and simulation results are found to be close.
Planar electromagnetic simulator Sonnet has been used to design, simulate, and validate the measu... more Planar electromagnetic simulator Sonnet has been used to design, simulate, and validate the measurement results for the microstrip type directional couplers to sense forward and reflected power in RF power amplifier applications. Two directional couplers for this purpose have been designed, simulated, and their results are compared with the experimental results. The accuracy of the planar electromagnetic simulator Sonnet has been tested on two-line symmetrical and multi-layer three line directional couplers. It has been shown that Sonnet provides accurate results within acceptable error, and hence, can be used in a microstrip directional coupler design for RF power amplifier applications.
Planar electromagnetic simulator Sonnet has been used to identify the source of the non-uniformit... more Planar electromagnetic simulator Sonnet has been used to identify the source of the non-uniformity in current distribution for parallel-connected transistors for high power applications at HF (3-30MHz) range. S-parameters and current distribution of the main board where resonators and transistors are connected are obtained with Sonnet and used in the time- domain non-linear circuit simulator, Pspice, for RF power amplifier simulation. Source current distribution for individual transistors in conjunction with overall amplifier simulation has been used to identify the hot spots for amplifier when it is terminated with matched load and open load under rated power. It is shown that planar electromagnetic simulator, Sonnet, can be used to identify the non-uniformity in source current distribution among transistors in RF power amplifiers.
Applied Computational Electromagnetics Society, 2021
The resonant characteristics of single split ring resonator-based metamaterial devices with singl... more The resonant characteristics of single split ring resonator-based metamaterial devices with single gap are presented using the analytical formulation developed for the lumped element equivalent circuit model. The characteristics of the metamaterial resonators have been investigated for different ring sizes, gap widths and substrate permittivity. Equivalent circuit model is developed for two ring structures. The analytical, and simulation results are compared and verified. The prototype has been then built and measured. It has been observed that all the results agree. The results presented in this paper can be used to develop devices at the THz range that can operate as sensors, antennas or tuning elements.
Applied Computational Electromagnetics Society, 2021
This paper demonstrates a shape synthesis technique for multi-mode dielectric resonator antennas ... more This paper demonstrates a shape synthesis technique for multi-mode dielectric resonator antennas using binary genetic algorithm and characteristic mode analysis. The cost function for the synthesis process is defined from characteristic modal parameters, such as modal quality factors and self-resonance frequencies. Since only modal parameters are involved in the cost function, the shape synthesis process is made independent of feeds. In the paper, we demonstrate the shape synthesis of a DRA with three self-resonant modes at 3 GHz.
Progress In Electromagnetics Research M, 2020
2016 IEEE 7th Annual Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON), 2016
The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI p... more The full simulation and modeling of ECM for HVAC systems is an obligation to understand the EMI problem occurring in the units. From the drive of an efficient model development of the ECM for HVAC system, a new hierarchical model proposed. This model includes simulation model, standards description, and experimental results. Estimation of conducted EMI by using computer simulation in advance gives the opportunity to design an efficient, and cost effective EMI filter, which meets the law. This manuscript presents simulation and common mode noise measurement modeling, PCB parasitic, drive system modeling, and an EMI filter for an HVAC motor. It is possible to predict conducted EMI emissions from the ECMs from the simulation circuit based on the developed models. Comparison of simulation result and the experimental result shows that they are to be in agreement.
2015 International Conference on Electromagnetics in Advanced Applications (ICEAA), 2015
Introduction to RF Power Amplifier Design and Simulation, 2015
Progress In Electromagnetics Research, 2007
Progress In Electromagnetics Research B, 2013
Progress In Electromagnetics Research B, 2011
Communications and Network, 2012
2013 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC), 2013
ABSTRACT Design, simulation, implementation, and measurement of three variations of an F-antenna ... more ABSTRACT Design, simulation, implementation, and measurement of three variations of an F-antenna that can be interfaced with an electric machine in the ultra-high frequency (UHF) range for monitoring and control of an HVAC system wirelessly are presented for the first time. The development is broken down into three stages: ideal antenna optimization and simulation, implementing and testing antennas in an HVAC system, and research into the effects of varying environmental and orientation aspects of the antenna subsystem. The antennas are designed and simulated using the 3D electromagnetic simulator, Ansoft High Frequency Structure Simulator (HFSS). The performance of each antenna including gain, bandwidth and directivity are compared for various conditions. In addition, link quality indicator (LQI) tests were conducted to measure the quality of the communication link for each antenna when they are located in HVAC system. It is shown that the UHF antennas presented in this paper can be used to control and monitor HVAC systems wirelessly using the integrated approach as detailed in this paper. Furthermore, it is also shown that optimization of the antennas via electromagnetic simulator such as HFSS facilitates the design process and improves the performance of the antennas that will be interfaced with electric machines in HVAC systems.
Proceedings of the 2012 IEEE International Symposium on Antennas and Propagation, 2012
ABSTRACT A low profile UHF RFID antenna is designed using Electromagnetic Bang Gap (EBG) structur... more ABSTRACT A low profile UHF RFID antenna is designed using Electromagnetic Bang Gap (EBG) structures with high permittivity materials. The effect of dielectric permittivity constant, dielectric thickness, feed location, feed types such as probe-fed and inset-fed on antenna gain, bandwidth, and return loss when matching to the feed point has been done using transmission line and cavity models which have been studied extensively with 3D electromagnetic simulator, HFSS. The optimum microstrip patch antenna design method to have an increased reading distance with low profile is presented in detail. The results have been compared with existing results and improvement has been demonstrated.