ACES Publication Search
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| Title: | ACES Journal October 2021 Cover |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 1444 KB |
| Title: | ACES Journal October 2021 Front/Back Matter |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 251 KB |
| Title: | ACES Journal October 2021 Full |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 63389 KB |
| Title: | Analysis of Bi-Isotropic Media using Hybrid Boundary Element Method |
| Abstract: | This paper proposes the application of the hybrid boundary element method (HBEM) for analysis of bi-isotropic media of Tellegen type. In previous applications of this method it was possible to analyze only the electromagnetic problems in isotropic media. The main contribution of this paper is the modification of the method itself, in order to solve a large scale of quasistatic TEM problems in bi-isotropic media. Detailed theoretical analysis and HBEM procedure are described and applied. Characteristic parameters of a microstrip line with bi-isotropic substrate are analyzed. Obtained results have been compared with available numerical and software simulation results. A close results match can be noticed. |
| Author(s): | M. T. Peric, S. S. Ilic, A. N. Vuckovic, N. B. Raicevic |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 530 KB |
| Title: | Efficient Method Based on SMW Formula for Analyzing PEC Targets with Partial and Thin Coatings |
| Abstract: | The analysis of the electromagnetic scattering from the perfect electric conductor (PEC) partially coated with thin material is a significant task in stealth design. Previous research has shown the scattering can be calculated by only discretizing the current on PEC in the case of thin coating layers. However, it has a downside that it will recalculate a complete solution when the geometry or electromagnetic properties of the coating changes. In this paper, a Sherman–Morrison–Woodbury (SMW) formula-based method is proposed to address this problem. According to the SMW formulation, it can reuse the inverse impedance matrix of the PEC part to efficiently obtain the solutions when local coating changes, so it can avoid the subsequent complete inverse of the new impedance matrix. Furthermore, it employs the fast direct solution method based on the SMW formulation to accelerate the calculation of inverse matrix of the PEC part. Numerical results demonstrate the performance of the proposed method. |
| Author(s): | Z. Dong, X. Chen, G. Yu, Z. Li, L. Lu, C. Gu |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 20153 KB |
| Title: | Research on EBE-FEM Parallel Algorithm Combined with Fast Color Marking Method Based on CUDA Platform |
| Abstract: | The element-by-element finite element method (EBE-FEM) parallel algorithm has been realized on Compute Unified Device Architecture (CUDA) platform in this paper. An improved fast color marking method (FCM) combined with tabu search algorithm is proposed to solve the problem that the elements sharing a node wait for accessing the same memory space in parallel computation. The elements in the same color can be processed at the same time without waiting. This method can get more even color grouping faster than the classical coloring method (CCM). Combining it with the EBE parallel algorithm can achieve faster element-level operations. The validity and accuracy of the method has been verified by comparing the computed results with the analytical solution of the magnetic field produced by the solenoid. The parallel program is applied to analyze the main magnetic field of a single-phase transformer, which shows higher speedup performance. |
| Author(s): | X. Ren, X. Yan, J. Lan, Z. Ren, Y. Zhang |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 1024 KB |
| Title: | Uncertainty Quantification and Global Sensitivity Analysis of Radiated Susceptibility in Multiconductor Transmission Lines using Adaptive Sparse Polynomial Chaos Expansions |
| Abstract: | This study analyzes the uncertainties of the radiated susceptibility in multiconductor transmission lines (MTLs), and introduces an adaptive sparse polynomial chaos expansion combining hyperbolic truncation scheme with orthogonal matching pursuit method (AS-PCE (OMP)). This method is used as the basis to realize the uncertainty quantification (UQ) of radiated susceptibility and global sensitivity analysis (GSA) of input variables to output variables. GSA considers the influencing factors of the incident field and transmission-line geometric parameters. The global sensitivity indices of each input variable are calculated for varying impedance loads. The accuracy and efficiency of the proposed method are verified compared with the results of the polynomial chaos expansion based least angle regression method and Monte Carlo methods. |
| Author(s): | Y. Zhu, Y. Wang, Q. Yu, D. Wu, Y. Zhang, T. Zhang |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 1113 KB |
| Title: | Convolution Operations on Coding Metasurface for RCS Reduction |
| Abstract: | In this paper, a polarization conversion unit is designed as the coding unit. The units are arranged in a regular cross-arrangement. Convolution operation is composed of the Dirac-delta function and the principle of scattering-pattern shift. The Dirac-delta is optimized by generalized Snell’s law and addition theorem. According to the convolution operations, the cross-arrangement pattern is shifted to multiple directions to reduce the backscattering field. Compared with regularly arranged metasurface, this method can reduce the radar cross section (RCS) of single station by at least 10 dB. Compared with the traditional intelligent optimization algorithm, this method provides a new route to reduce RCS by random distribution of elements. |
| Author(s): | T. Shang, J. Zhao, J. Xu |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 935 KB |
| Title: | Fast Power Series Solution of Large 3-D Electrodynamic Integral Equation for PEC Scatterers |
| Abstract: | This paper presents a new fast power series solution method to solve the Hierarchal Method of Moment (MoM) matrix for a large complex, perfectly electric conducting (PEC) 3D structures. The proposed power series solution converges in just two (2) iterations which is faster than the conventional fast solver–based iterative solution. The method is purely algebraic in nature and, as such applicable to existing conventional methods. The method uses regular fast solver Hierarchal Matrix (H-Matrix) and can also be applied to Multilevel Fast Multipole Method Algorithm (MLFMA). In the proposed method, we use the scaling of the symmetric near-field matrix to develop a diagonally dominant overall matrix to enable a power series solution. Left and right block scaling coefficients are required for scaling near-field blocks to diagonal blocks using Schur’s complement method. However, only the righthand scaling coefficients are computed for symmetric near-field matrix leading to saving of computation time and memory. Due to symmetric property, the left side-block scaling coefficients are just the transpose of the right-scaling blocks. Next, the near-field blocks are replaced by scaled near-field diagonal blocks. Now the scaled near-field blocks in combination with far-field and scaling coefficients are subjected to power series solution terminating after only two terms. As all the operations are performed on the near-field blocks, the complexity of scaling coefficient computation is retained as O(N). The power series solution only involves the matrix-vector product of the far-field, scaling coefficients blocks, and inverse of scaled near-field blocks. Hence, the solution cost remains O(NlogN). Several numerical results are presented to validate the efficiency and robustness of the proposed numerical method. |
| Author(s): | Y. K. Negi, N. Balakrishnan, S. M. Rao |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 970 KB |
| Title: | Novel Broadband Circularly Polarized Monopole Antenna for Multi-communication Systems |
| Abstract: | This paper proposes a novel coplanar waveguide (CPW) fed broadband circularly polarized (CP) monopole antenna, which applies to C-band and various wireless communication systems. The antenna consists of the double circular-shaped patch (DCSP) with square and L-shaped slots, and an improved asymmetric ground plane. The prototype of the designed antenna has been fabricated. The results of the measurement show that the 10-dB impedance bandwidth (ZBW) is 117.8% (2.2–8.5 GHz), the 3-dB axial ratio bandwidth (ARBW) is 62% (4.45–8.45 GHz). |
| Author(s): | H. Chen, Q. Feng, Y. Wen, Q. Fu |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 1257 KB |
| Title: | A Dual-Array Antenna System for 5G Millimeter-Wave Applications |
| Abstract: | Millimeter-wave (mm-Wave) technology has opened a new era of wireless communication systems in various fields like automotive, mobile devices, Internet of Things (IoT), military, medical, and others. The benefit of adopting the unconventional frequency spectrum of large bandwidth under an mm-Wave spectrum is the availability of large bandwidth and lesser chances of interferences from various technologies. In the recent 5G communication systems either cellular or other wireless applications, many researchers have focused on mm- Wave antennas and arrays. In this paper, a dual-array antenna system is designed for various 5G mm-Wave wireless applications. It has two arrays on the same substrate edges with a series feed line compact technique. The profile antenna system has two 1×16 arrays on the same substrate edges. Each array gives 17.3 dB and 16.4 dB simulated and measured gains and impedance bandwidth 31.30 GHz to 39 GHz at 38 GHz center frequency. The feature to use both arrays at the same time for two different applications within the operational band for same or different center frequencies makes this proposed dual-array antenna system a good candidate for 5G mm-Wave wireless IoT and broadcast applications. |
| Author(s): | H. U. Tahseen, L. Yang, W. Hongjin |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 566 KB |
| Title: | Dual-band (28/38 GHz) Yagi–Uda Antenna with Corrugated Radiator and Triangular Reflectors for 5G Mobile Phones |
| Abstract: | A novel printed design of a Yagi–Uda antenna is introduced for dual-band operation at 28/38 GHz. A corrugated strip dipole with a capacitively end-coupled extension strip is employed as the driven element. The proposed antenna has two triangular-shaped reflectors and one director. The driven dipole is fed through a coaxial feed line constructed as three unequal length transition strips. A four-port MIMO antenna system constructed using the proposed Yagi–Uda is suggested for mobile phones. CSTr simulator is used to study the effect of the different design parameters on the antenna gain and the operating bands. Numerical and experimental investigations are achieved to assess the performance of both the single-element antenna and the four-port MIMO antenna system. It is shown that the simulation results agree with the experimental measurements and both show good performance of the single antenna as well as the MIMO antenna system. The bandwidths achieved around 28 GHz and 38 GHz are about 4 GHz and 1.4 GHz, respectively. The gain of the antenna is about 9 and 10 dB at 28 and 38 GHz, respectively. The four-antenna configuration shows radiation pattern diversity required for MIMO system. The envelope correlation coefficient (ECC) and the diversity gain (DG) are calculated and the results show that the proposed MIMO antenna system is suitable for the forthcoming 5G mobile communications. |
| Author(s): | A. E. Farahat, K. F. A. Hussein |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 14915 KB |
| Title: | Possible Leaky Wave Antennas for Propagation Therapy using SAR Analysis |
| Abstract: | This paper presents an overview of design and functionality of three novel leaky wave antennas (LWAs) that are proposed as a possible hyperthermia system using LWA logic. LWAs are best known for their interesting property of frequency scanning. This makes them appealing for beam steering applications such as biomedical hyperthermia and radar applications. Regarding the biomedical hyperthermia application, the property of beam scanning could be used for treatment of tumors found in different regions and depths of a given tissue. The proposed antennas are as follows: (1) mushroom-typed leaky wave antenna, (2) two-dimensionally (2D) periodically slotted leaky wave antenna, (3) belt-shaped leaky wave antenna. Each antenna provides distinguished advantages for hyperthermia therapy which will be discussed in the corresponding sections. For example, the belt-shaped leaky wave antenna is a conformal antenna that could follow the cylindrical shape of the patient’s neck and focus the electromagnetic beam on the neck tumors. Two-dimensional LWAs such as mushroom-typed leaky wave antennas provide more beam steering flexibility compared to 1D types such as 1D slotted leaky wave antennas. |
| Author(s): | M. Sarabi, W. F. Perger |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 12901 KB |
| Title: | T-Junction Power Divider Based on Rectangular Microcoaxial Structure in W-band |
| Abstract: | In this paper, a W-band T-junction power divider based on rectangular microcoaxial structure is proposed. Rectangular microcoaxial line is a threedimensional (3D) structure with the merits of wide operation bandwidth, low loss, and high integration, which is suitable for the design of radio frequency (RF) devices. A two-way power divider is designed based on the rectangular microcoaxial structure. And the two-way power divider is expanded into a four-way power divider to further illustrate the design method. Moreover, a back-to-back configuration including two identical two-way power dividers is fabricated and measured. The insertion loss of the back-to-back configuration is about 0.11–1.18 dB in W band, which agrees with the simulation one reasonably and shows good performance. |
| Author(s): | Z.-Y. Huang, B.-Y. Liu, Y. Jiang, W.-T. Yuan, Q.-P. Wang, W.-D. Hu, N.-C. Yuan |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 2707 KB |
| Title: | Investigation of Electromagnetic Exposure of WPT Coil to Human Body Based on Biological Electromagnetic Safety Assessment |
| Abstract: | When the wireless power transmission (WPT) system of electric vehicle (EV) is working, the leakage of high frequency electromagnetic field (EMF) to the nonworking area will be a threat to human safety. According to SAE J2954 standard, the coupling coils modeling of WPT and car shell modeling are established. WPT’s bit-directional guidance technology and deviation correction control strategy are given. According to the harm degree of SAR, power density P, current density J, and magnetic induction intensity B to human body when the human model is in different positions of standing, lying, and sitting, the comprehensive harm index of electromagnetic radiation Σhurt is creatively proposed to assess the electromagnetic radiation hazard of EV. Field circuit co-simulation helps us to study the bio-electromagnetic safety of WPT in vehicle environment. A human exposure EMF joint test system is designed and made to measure vehicle’s surrounding EMF. Through simulation and experimental verification, WPT coil’s electromagnetic exposure level to the human body inside the EV meets the requirements of ICNIRP, the EMF at the ankle outside the EV exceeds the standard and needs to be protected. |
| Author(s): | H. Sun, S. Hou, Y. Zhao, W. Yan, Y. Wu |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 3073 KB |
| Title: | A Novel Dual-band Ambient RF Energy Harvesting System for Autonomous Wireless Sensor Node Application |
| Abstract: | This paper presents a novel dual-band ambient Wi-Fi energy harvesting system for an autonomous wireless sensor node (AWSN) which operates independently without other external power source. While conventional wireless sensor nodes are employing batteries with limited lifespans, an AWSN is supplied by harvested energy and does not require frequent battery replacement. Due to that reason, research on the energy harvesting aspect of AWSNs has been carried out intensively in recent years. By optimizing the matching network, the proposed ambient Wi-Fi energy harvesting system achieves a relatively good efficiency in dual-band at 2.45 GHz and 5.8 GHz. The efficiency reaches a peak at 47.45% and 42% at 2.45 GHz and 5.8 GHz, respectively. The proposed idea is numerically and experimentally demonstrated with the Wi-Fi source in building. |
| Author(s): | M. T. Le, D. A. Pham, H. T. Vu, V. D. Ngo, Q. C. Nguyen |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 684 KB |
| Title: | Crosstalk Prediction of Handmade Cable Bundles for New Energy Vehicles |
| Abstract: | This paper presents an effective solution for the crosstalk prediction of handmade cable bundles. The outer- and inner-layer topology of the cross section are analyzed respectively, combined with the actual physical model of the cable bundles. The cascading method is used to deal with the relationship between the structure of cable bundles and the distributed per unit length (p.u.l.) parameter matrices. The random exchange of the wires in the cable bundles is equivalent to the row– column transformation of the p.u.l. parameter matrix, and the values of the p.u.l. parameter matrix after the transformation are modified by equal interval rotation degree. Then, the unconditionally stable finite difference time domain (FDTD) method is used to solve the crosstalk. The verification analysis shows that the change of the element value of the p.u.l. parameter matrix caused by the rotation of the cross-section relative to the ground cannot be ignored. The accuracy of the proposed method is evaluated through comparison to the probability method for a seven-core handmade cable bundles, especially in the high frequency. |
| Author(s): | J. Guo, Y. Liu |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 722 KB |
| Title: | Design and Analysis of a Novel Linear Oscillating Actuator with Dual Stator Rectangular Geometry |
| Abstract: | This paper proposes a new design of a linear oscillating actuator (LOA) with rectangular topology of stator and mover. The shape of a permanent magnet (PM) has a major impact on cost, mechanical strength, and generation of magnetic flux density. This design uses rectangular PMs that are relatively cheaper than tubular PMs. Proposed LOA operates on single phase AC loading source. All the design parameters are optimized by using parametric sweep and the response of the LOA in terms of thrust force is compared. The electromagnetic (EM) force received by the mover is investigated at various mover positions as well as at different values of the current. Motor constant is examined toward both directions of the force. Resonance phenomena is analyzed using input and output power of the LOA, which is the unique advantage of the LOA. Compared to the conventional LOA designs, the output parameters of the LOA, such as EM force, stroke, operating frequency and power, show great improvement with regards of volume of the proposed LOA. This topology shows significant development in terms of thrust force, motor constant, easy manufacturing and cost. Moreover, range of the stroke of proposed LOA is feasible for linear refrigeration system. |
| Author(s): | M. Jawad, Y. Haitao, Z. Ahmad, Y. Liu |
| File Type: | Journal Paper |
| Issue: | Volume: 36 Number: 10 Year: 2021 |
| Download Link: | Click here to download PDF File Size: 11234 KB |