ACES Publication Search
There are 12 search results for:
| Title: | ACES Journal November 2022 Cover |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 1967 KB |
| Title: | ACES Journal November 2022 Front/Back Matter |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 342 KB |
| Title: | ACES Journal November 2022 Full |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 13561 KB |
| Title: | A Low-Profile Wideband Circularly Polarized Metasurface Antenna Based on Characteristic Mode Theory |
| Abstract: | A novel low-profile wideband circularly polarized metasurface (MTS) antenna is proposed. The characteristic mode analysis is used to investigate the operating mechanism of the MTS antenna. Then, the desired modes are chosen and excited by the annular ring slot combined with an L-shaped microstrip line. Simulation studies revealed that this type of feeding structure effectively excites the desired modes to accomplish wideband circular polarization and high-gain radiation. Experimental results show that the antenna has both the wide impedance bandwidth (IBW) and axial ratio bandwidth (ARBW), with a maximum radiation gain of 9.3 dBi and a –10 dB relative IBW and 3 dB relative ARBW of 39.8% and 30%, respectively. |
| Author(s): | S. Liu, L. Yang, X. Wu |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 2290 KB |
| Title: | A Noninvasive Method for Measuring the Blood Glucose Level Using a Narrow Band Microstrip Antenna |
| Abstract: | In this paper, a narrowband and compact antenna resonating at 6.1 GHz with a peak realized gain of 3.3 dBi is proposed to monitor the glucose concentration in the blood without taking invasive blood samples. The proposed antenna is fabricated using a low-cost FR-4 substrate with compact dimensions of 30 mm × 30 mm × 1.6 mm. The impedance bandwidth of this antenna ranges from 5.2 to 7.1 GHz. For measuring blood glucose levels, a human finger phantom model with dimensions of 15 mm × 12 mm × 10 mm is constructed using the EM simulation (HFSS) environment. The finger phantom consists of different layers such as skin, fat, muscle, blood, and bone modeled at 6.1 GHz using various dielectric materials for various glucose concentrations. The finger phantom model is placed at different locations around the antenna to measure the frequency shift for monitoring glucose concentration in blood samples. The proposed finger phantom model is validated by conducting an experimental study by placing a real human finger around the fabricated antenna and measuring the frequency shift. This study shows a very good agreement with the results obtained by the simulated phantom model. The advantages and outperformance of the proposed sensor are highlighted in terms of the sensitivity obtained and compared with other techniques given in the literature. |
| Author(s): | A. R. Megdad, R. W. Aldhaheri, N. M. Sobahi |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 4194 KB |
| Title: | Non-Destructive Detection of Pipe Line Cracks Using Ultra Wide Band Antenna with Machine Learning Algorithm |
| Abstract: | In this article, an Ultra-Wide Band (UWB) antenna for the pipeline crack detection process is proposed. A UWB antenna has been designed with the dimension of 32 x 32 mm2 and it resonates from 3 GHz to 10.8 GHz. The designed antenna produces a peak gain of 4.36 dB. A pair of UWB antennas are employed in various pipeline scenarios and the received pulse from antenna 1 to antenna 2 is used for further processing and detection of pipeline cracks. Through the suitable machine learning data classifier algorithm the dimension of the crack has been detected. The various features such as mean, standard deviation (s), mean average deviation (mad), skewness, and kurtosis have been extracted from the received pulse. Then the three different machine learning algorithms namely Support Vector Machine (SVM), k-Nearest Neighbor (kNN), and Na¨ıve Bayse (NB) were trained and tested using extracted features, and the dimension of the void has been identified. Out of these three machine learning algorithms, kNN provides better accuracy and precision. It predicts the small cracks with 100% accuracy having a dimension as small as 1 mm width. |
| Author(s): | B. Ananda Venkatesan, K. Kalimuthu |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 1254 KB |
| Title: | Single-band Series Absorptive Common-mode Noise Filter |
| Abstract: | A Single-band Series Absorptive Common Mode Noise Filter (ACMF) is proposed. The ACMF is embedded in a four-layer printed circuit board (PCB) and consists of three parts: a Reflective Common Mode Noise Filter (RCMF), a matching circuit, and an absorber. The RCMF is designed using mushroom-type resonators. The matching circuit is designed using meander lines to reduce the size of the filter dimensions. The absorber of the Common Mode noise (CM) is a series resistor. The designed operating frequency is 2.45 GHz. The simulation results are as follows: the insertion loss of CM (Scc21) is –22.49 dB at the frequency of 2.61 GHz, the return loss of CM (Scc11) is –18.62 dB at the frequency of 2.5 GHz, while the integrity of the Differential Mode signals (DM) can be maintained with a very small insertion loss (Sdd21) of –1 dB at the frequency range of 0-8 GHz, and the achieved Absorption Efficiency (AE) is 93% at the frequency of 2.54 GHz. The proposed ACMF dimension is 10.3 x4.6 mm. The fractional bandwidth is 19%. The measurement results of the fabricated ACMF do not deviate significantly the simulation results. They are as follows: Scc21 is –17.87 dB at the frequency of 2.31 GHz, Scc11 is –20.87 dB at the frequency of 2.38 GHz, Sdd21 is –2.8 dB at the frequency range of 0–8 GHz, the Absorption Efficiency is 97% at the frequency of 2.32 GHz, and the fractional bandwidth is 17%. Therefore, the results of the ACMF design carried out by simulation can be implemented into a fabricated ACMF with measurement results similar to the calculation results in the design. |
| Author(s): | D.-B. Lin, E. Ali, T. Adiprabowo, C.-Y. Zhuang |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 2416 KB |
| Title: | A Band Stop to Band Pass Filter Transformation Utilizing 3-D Printing Technique for C-band Applications |
| Abstract: | In this paper, a band-pass filter (BPF) based on split-ring resonator (SRR) using a 3-D printing technique for C-band applications is introduced. The proposed filter is designed to operate at a frequency of 3.9 GHz. An innovative technique for printing the substrate with a size of 24 × 24 × 1.1 mm3 using PLA dielectric material is implemented. The copper sheet with a thickness of 0.1 mm is printed on the upper and lower faces of the substrate. First, the SRR band stop filter (BSF) is introduced then two L-Stubs are inserted to implement an additional band stop region, and this rejoin is adjusted to obtain a band-pass region between the two stopbands. The BPF is operated at a 3-dB bandwidth extended from 3.5 GHz to 4.3 GHz with an S21 level of –0.2 dB for the simulated results while it achieves a 3- dB bandwidth within 3.6 GHz to 4.2 GHz (15.3 %) with an S21 level of –1.8 dB for the measured results. |
| Author(s): | W. A. E. Ali, A. A. Ibrahim, Ashraf E. Ahmed |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 1373 KB |
| Title: | A High-gain, Low-profile Filtering Antenna Based on a Novel Metasurface |
| Abstract: | In this paper, a filtering antenna based on a metasurface is designed using slot-coupled feeding, and the metasurface unit is a fractal pattern. Replacing the rectangular patch on the metasurface with a fractal patch can introduce a radiation zero point on the upper sideband of the antenna, thereby enhancing the sideband selectivity. In addition, the current is reversed by loading shorting pin, and a radiation zero point is also introduced in the lower sideband. After measurement, the -10 dB impedance bandwidth of the filtering antenna is 23.6% (3.22-4.08 GHz), and the average antenna gain in the passband is 8.1 dBi. The filtering antenna does not involve an additional filter circuit, has a simple structure, and a small size, and ideally eliminates insertion loss. To verify, the real object was made and tested and found that the reflection coefficient, pattern, gain, etc. were in good agreement with the simulation results, it can be applied to the 5G communication frequency band. |
| Author(s): | J. Zhu, G. Zhang, Z. Li, Z. Che, J. Yue, Y. Feng, Q. Zhang, R. Qiu |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 3445 KB |
| Title: | Design and Fabrication of Waveguide Slot Antenna Using 3D Printing for 5G Application |
| Abstract: | This research constructs a 26 GHz waveguide slot antenna with decent gain. The application of millimeter-wave requires high bandwidth and gain to increase the traffic and users for millimeter-wave and 5G technology. The application of millimeter waves requires a high gain and bandwidth to achieve the requirements of traffic and users increasing for 5G technology and existing millimeter-wave. High-gain and power handling are provided by waveguide slot antennas. Three waveguide structures which are two waveguide antennae and a waveguide horn have been simulated by using CST and fabricated by a 3D printer. The tilt technique has been used with a waveguide to increase the bandwidth and gain of an antenna. A waveguide with broad wall tilt slots has one diction beam while a waveguide with broad and narrow wall tilt slots has two direction beams, each length of the wall enough to distribute six symmetric tilt slots. The gain of 14.3 dB and 1.9 GHz bandwidth are recorded for an antenna with broad wall tilt slots with one beam. While the waveguide with broad and narrow wall tilt slots achieved a gain of 13.9dB and a bandwidth of 1.9 GHz. The proposed antenna is a decent candidate for use with millimeter waves. |
| Author(s): | H. O. Hanoosh, M. K. A. Rahim, N. A. Murad, Y. M. Hussein |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 2022 KB |
| Title: | Millimeter-wave Wideband High-isolation Antenna Array Based on End-fire Magnetoelectric Dipole Antenna for 5G Applications |
| Abstract: | In this paper, a millimeter-wave (mmW) wideband high-isolation wide-angle scanning antenna is presented. The end-fire magnetoelectric (ME) dipole with wideband impedance characteristic and wide beamwidth is selected. Based on the ME dipole, a 1×4 subarray with a stripline feed network is constructed to get higher antenna efficiency. Then, four 1×4 subarrays are adopted to form a 4×4 array to realize the wideangle scanning performance. Furthermore, to get better isolation between the subarrays, the beam is tilted on the non-scanning plane; in addition, the resonant split rings are added on the background of the subarrays.With these two measures, the isolation between the subarrays can be effectively reduced, with more than 20 dB over the entire bandwidth. Owing to the wide beamwidth of ME dipole and high isolation between the subarrays, the 44 array can obtain the wide-angle scanning characteristic. The final antenna covers an operating bandwidth of 19.5% (24.25-29.5 GHz) with return loss more than 10 dB, which can meet the band in the 5G standard. The beam can scan approximately ±55° with a realized gain reduction under 3 dB within the wide operating bandwidth. Also, the simulated radiation efficiency of the array is more than 77% over almost the entire band. The antenna will be a potential candidate to be applied in 5G applications. |
| Author(s): | F.-F. Fan, Q.-L. Chen, K. Qin |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 17191 KB |
| Title: | Broadband Circularly-polarized Crossed-dipole Antenna with Good Gain Stability |
| Abstract: | A broadband Circularly Polarized (CP) crossdipole antenna with the merit of stable gain is proposed. The designed antenna consists of crossed dipoles, parasitic patches, reflectors, and vertical parasitic plates. By adding parasitic patches and parasitic plates, the circular polarization performance of the antenna is significantly improved. Furthermore, the gain value becomes stable in the entire operating frequency band by modifying the structure of the parasitic plates. The final dimension of the presented antenna is 0.76λₒ×0.76λₒ×0.28λₒ (λₒ is the wavelength at the center frequency point in the circularly polarized working frequency band). The measured results depict that the Impedance Bandwidth (IBW) is 80.8% (2.03GHz~4.78GHz) and the Axial Ratio Bandwidth( ARBW) is 68.5% (2.35GHz~4.8GHz). Stable gain values, ranging from 6dBic to 7.5dBic, are obtained in the working frequency band, and the average gain can reach 7dBic. |
| Author(s): | X. Song, Z. Wu, X. Li, Y. Zhang, H. Yang |
| File Type: | Journal Paper |
| Issue: | Volume: 37 Number: 11 Year: 2022 |
| Download Link: | Click here to download PDF File Size: 1442 KB |