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Packaging of an Amplifier Module for Sub-THz Wireless Transmission Based on Photonics 基于光子技术的亚千赫无线传输放大器模块封装
IF 2.3 3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-11-30 DOI: 10.26866/jees.2023.6.r.192
Sooyeon Kim, Chan-Gyu Choi, Sang-Rok Moon, Minkyu Sung, Eon-sang Kim, Ho-Jin Song, Hyunhak Jeong, Seung Hwan Kim, Seung-Hyun Cho
{"title":"Packaging of an Amplifier Module for Sub-THz Wireless Transmission Based on Photonics","authors":"Sooyeon Kim, Chan-Gyu Choi, Sang-Rok Moon, Minkyu Sung, Eon-sang Kim, Ho-Jin Song, Hyunhak Jeong, Seung Hwan Kim, Seung-Hyun Cho","doi":"10.26866/jees.2023.6.r.192","DOIUrl":"https://doi.org/10.26866/jees.2023.6.r.192","url":null,"abstract":"In this study, we have developed an amplifier waveguide module suitable for broadband communication in the sub-THz band. To achieve a waveguide module with excellent gain flatness characteristics, the effects of errors during the packaging procedures of the waveguide module and the space occupied by the bondwire were analyzed through an electromagnetic simulation. Furthermore, a photonics-based sub-THz wireless link with a carrier frequency of 288 GHz was established using a packaged amplifier module. The amplifier module was placed at the output of the sub-THz transmitter based on a uni-traveling-carrier photodiode and at the input of the sub-THz receiver. The maximum gain and 3 dB bandwidth of the amplifier module are 17.3 dB and 39 GHz, respectively. With this setup, we successfully transmitted a 100-Gbps 16-QAM modulated signal, employing a carrier frequency of 288 GHz, across a wireless distance of 100 m.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139205683","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Investigation of Pulse Characteristics of a Novel Cylindrically Slotted Cloaked Antenna 新型圆柱形开槽隐蔽天线的脉冲特性研究
IF 2.3 3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-11-30 DOI: 10.26866/jees.2023.6.l.21
Doojin Lee
{"title":"Investigation of Pulse Characteristics of a Novel Cylindrically Slotted Cloaked Antenna","authors":"Doojin Lee","doi":"10.26866/jees.2023.6.l.21","DOIUrl":"https://doi.org/10.26866/jees.2023.6.l.21","url":null,"abstract":"This study numerically examines the pulse radiating capacities of a novel cylindrically slotted cloaked antenna. The performance of the cloaks for the proposed structure is investigated using the scattering cancellation principle. Furthermore, the pulse radiating performance of the proposed antenna is extensively evaluated by employing a figure of merit. The results show that the proposed antenna exhibits a maximum pulse radiating capacity at 67.5° for the theta-polarized angle, while its pulse radiating performance is independent on the phi-polarized angles.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139199589","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of Transmission Line Employing Graphene-silver Nanowire/PET Structure for Application in Flexible and Wearable Devices in X-band Wireless Communication Systems 开发采用石墨烯-银纳米线/PET 结构的传输线，以应用于 X 波段无线通信系统中的柔性可穿戴设备
IF 2.3 3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-11-28 DOI: 10.26866/jees.2024.1.r.198
Hyun-Soo Oh, Sooyeon Jeong, Young Yun, Seung Yol Jeong
{"title":"Development of Transmission Line Employing Graphene-silver Nanowire/PET Structure for Application in Flexible and Wearable Devices in X-band Wireless Communication Systems","authors":"Hyun-Soo Oh, Sooyeon Jeong, Young Yun, Seung Yol Jeong","doi":"10.26866/jees.2024.1.r.198","DOIUrl":"https://doi.org/10.26866/jees.2024.1.r.198","url":null,"abstract":"In this study","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139224012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Clutter Rejection for FM Ranging Airborne Radar 调频测距机载雷达杂波抑制
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-10-30 DOI: 10.26866/jees.2023.6.r.190
Ji Hwan Yoon, Yong Min Kim
{"title":"Clutter Rejection for FM Ranging Airborne Radar","authors":"Ji Hwan Yoon, Yong Min Kim","doi":"10.26866/jees.2023.6.r.190","DOIUrl":"https://doi.org/10.26866/jees.2023.6.r.190","url":null,"abstract":"In airborne radar, it is important to reject clutter signals to detect targets of interest. High pulse repetition frequency (HPRF) waveform provides robust detection performance in a clutter environment by separating clutter signals from the target echo signals in a Doppler frequency domain, but it suffers from range ambiguity. The range ambiguity in HPRF can be resolved by frequency modulation (FM) ranging. However, the Doppler frequencies of both the clutter and target echo signals change linearly with the range due to changes in the carrier frequency in FM ranging. In such a case, the target echo signal can be rejected by a conventional clutter rejection frequency even if it is not masked by a clutter signal. This paper proposes an optimum clutter rejection frequency for FM ranging airborne radar by considering the Doppler frequency spread in FM ranging. The optimum clutter rejection frequency is derived by calculating the maximum Doppler frequency of the spread clutter signal caused by FM ranging. The simulation and flight test results verify that the proposed clutter rejection frequency is the optimum value that can improve the detection capability of FM ranging airborne radar.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136103501","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Broadband All-Metal Vivaldi Array Antenna with Pyramidal-Shaped Wings for LEO Satellite Applications 用于低轨卫星的金字塔翼宽带全金属维瓦尔第阵列天线
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-09-30 DOI: 10.26866/jees.2023.5.r.184
Doyoung Jang, Tae Heung Lim, Seulgi Park, Hosung Choo
{"title":"Broadband All-Metal Vivaldi Array Antenna with Pyramidal-Shaped Wings for LEO Satellite Applications","authors":"Doyoung Jang, Tae Heung Lim, Seulgi Park, Hosung Choo","doi":"10.26866/jees.2023.5.r.184","DOIUrl":"https://doi.org/10.26866/jees.2023.5.r.184","url":null,"abstract":"In this paper, we propose an all-metal Vivaldi antenna with pyramidal-shaped conductive wings for use in satellite signal intelligence applications. The inner metal Vivaldi antenna consists of radiating flares and a transition part between the feeder and the flares. The curvature of the inner flares is optimized, while the outer edges of the radiating flares are connected to the pyramidal-shaped wings to obtain a higher antenna gain over the entire operating frequency band. To verify the antenna’s feasibility, performance aspects such as the reflection coefficient, the radiation patterns, and the boresight gain are measured in a full anechoic chamber. The fractional bandwidth of the proposed antenna is 54%, while the boresight gain is greater than 7.3 dBi in the frequency range from 8 GHz to 12 GHz. To examine array performance aspects such as the total gain and beam steering, the proposed Vivaldi antenna is extended to a 4 × 1 linear array configuration. When the main beam is steered from 0° to 15°, the maximum gain is varied from 14.5 dBi to 13.7 dBi, while the side lobe level is decreased from 11.2 dB to 6.3 dB.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135039939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An Investigation of Harmonic Oscillation of an Ion Particle in a Non-uniform Electrostatic Field 离子粒子在非均匀静电场中的谐振振荡研究
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-09-30 DOI: 10.26866/jees.2023.5.r.186
Jatupon Em-Udom, Nattapon Jaisumroum
{"title":"An Investigation of Harmonic Oscillation of an Ion Particle in a Non-uniform Electrostatic Field","authors":"Jatupon Em-Udom, Nattapon Jaisumroum","doi":"10.26866/jees.2023.5.r.186","DOIUrl":"https://doi.org/10.26866/jees.2023.5.r.186","url":null,"abstract":"In this study, we investigate the possibility to trap an ion particle in a non-uniform electrostatic field generated by two ionic rings, with the aim to obtain and verify general results regarding our proposition. To develop the equation of motion, we first derive the electric field generated by each ring, based on the multipole expansion technique under the azimuthally symmetrical charge distribution speculation and superposition principle. Then, we establish the equation of motion regarding the Lagrangian formalism. From the results, we observe that an ion particle can exhibit harmonic motion, if the stability condition is satisfied by an appropriate parametric setting. The results are confirmed by displacement responses and phase trajectory plots, which validate our belief in the prospect to trap an ion in an electrostatic field. Furthermore, the velocity amplitude is significantly influenced by both the charge concentration of each ring and its size.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135039500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An I-Shaped Slot Grid Antenna Array with Substrate Integration and Enhanced Bandwidth 具有基板集成和增强带宽的i形槽网格天线阵列
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-09-30 DOI: 10.26866/jees.2023.5.r.188
Zhiyi Li, Shengjie Wang, Fan Li, Lin Lin, Hongzheng Zeng
{"title":"An I-Shaped Slot Grid Antenna Array with Substrate Integration and Enhanced Bandwidth","authors":"Zhiyi Li, Shengjie Wang, Fan Li, Lin Lin, Hongzheng Zeng","doi":"10.26866/jees.2023.5.r.188","DOIUrl":"https://doi.org/10.26866/jees.2023.5.r.188","url":null,"abstract":"Aimed to transmit electromagnetic energy in wireless power transfer, a planar substrate-integrated grid antenna array with four I-shaped slots was designed. A transverse stub was added to the microstrip line to produce additional resonance; hence, the impedance bandwidth was enhanced from 1.9% to 6%. Four I-shaped slots were formed on a perfect electric conductor (PEC) sheet to realize boresight radiation. Four gaps were etched to refine and compress the in-band impedance property. Furthermore, characteristic mode theory was adopted to analyze the working mechanism. Finally, the measurement results showed that the antenna had an operating bandwidth of 5% (|<i>S</i><sub>11</sub>| < -10 dB from 5.67 GHz to 5.96 GHz). In the operating band, the boresight gain varied from 9.3 dBi to 11.3 dBi. The cross-polarization level was lower than -30 dB on the boresight. Therefore, the proposed array is suitable for use in wireless power transfer systems and other related applications.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135039739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hybrid Sidelobe Recognition Method Using Boresight Error and Quadrant Signal Difference for Monopulse Array 基于轴视误差和象限信号差的单脉冲阵列混合旁瓣识别方法
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-09-30 DOI: 10.26866/jees.2023.5.r.185
Daewoong Woo, Jung-Won Lee, Kyu Young Hwang, Deok Kyu Kong
{"title":"Hybrid Sidelobe Recognition Method Using Boresight Error and Quadrant Signal Difference for Monopulse Array","authors":"Daewoong Woo, Jung-Won Lee, Kyu Young Hwang, Deok Kyu Kong","doi":"10.26866/jees.2023.5.r.185","DOIUrl":"https://doi.org/10.26866/jees.2023.5.r.185","url":null,"abstract":"In this paper, a sidelobe recognition method using boresight error and quadrant signal difference for a monopulse array is proposed. A conventional sidelobe recognition method compares the difference between the sum and delta channels. This method works well for the azimuth and elevation planes. However, the method is prone to many errors in the diagonal region of the two-dimensional plane. To overcome this problem, a method to calculate the deviation of the boresight error difference with different frequency combinations and a threshold to identify the sidelobe is proposed, and the method is validated to significantly reduce the error region. If a four-quadrant signal can be extracted separately, the signal deviation can be calculated and compared with the threshold, and the error region can be further reduced. The effects of each margin and bandwidth on the recognition performance are analyzed, and a slot array antenna is simulated to assess the method’s effectiveness.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135040072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved Ground Radiation Antenna Performance for a Vertically Attached PCB 垂直连接PCB的改进地面辐射天线性能
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-09-30 DOI: 10.26866/jees.2023.5.l.18
Seokju Wi, Hoseung Lee, Jeonghwan Kim, Rui Li, Hyunwoong Shin, Hyeongdong Kim
{"title":"Improved Ground Radiation Antenna Performance for a Vertically Attached PCB","authors":"Seokju Wi, Hoseung Lee, Jeonghwan Kim, Rui Li, Hyunwoong Shin, Hyeongdong Kim","doi":"10.26866/jees.2023.5.l.18","DOIUrl":"https://doi.org/10.26866/jees.2023.5.l.18","url":null,"abstract":"A small, loop-type ground radiation antenna for 2.4-GHz WLAN applications in the complex ground with two vertically attached printed circuit boards (PCBs) was designed. In the presence of a vertical PCB (sub-PCB), the antennas in two different positions, far from and near the sub-PCB, were designed. The current distribution of the complex PCB was stronger near the sub-PCB. Therefore, the coupling between the antenna and the complex PCB was stronger when the antenna was located near the sub-PCB. The antenna close to the sub-PCB obtained more than twice the 3:1 VSWR bandwidth and the efficiency bandwidth than the distant antenna.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135039327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unified GSTC-FDTD Algorithm for the Efficient Electromagnetic Analysis of 2D Dispersive Materials 二维色散材料高效电磁分析的统一GSTC-FDTD算法
3区 工程技术
Journal of electromagnetic engineering and science Pub Date : 2023-09-30 DOI: 10.26866/jees.2023.5.r.187
Sangeun Jang, Jae-Woo Baek, Jeahoon Cho, Kyung-Young Jung
{"title":"Unified GSTC-FDTD Algorithm for the Efficient Electromagnetic Analysis of 2D Dispersive Materials","authors":"Sangeun Jang, Jae-Woo Baek, Jeahoon Cho, Kyung-Young Jung","doi":"10.26866/jees.2023.5.r.187","DOIUrl":"https://doi.org/10.26866/jees.2023.5.r.187","url":null,"abstract":"The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic wave analysis of complex media. Conventional FDTD analyses of very thin two-dimensional (2D) dispersive materials require overwhelming computing resources because they should use very refined FDTD spatial grids. In this work, we propose a computationally efficient and unified FDTD formulation for 2D dispersive materials based on a combination of the generalized sheet transition condition (GSTC) and the modified Lorentz dispersion model. The proposed FDTD formulation can lead to a significant improvement in computational efficiency compared to the conventional FDTD method, while maintaining high accuracy. Numerical examples validate the improved computational efficiency of the proposed FDTD formulation.","PeriodicalId":15662,"journal":{"name":"Journal of electromagnetic engineering and science","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135039938","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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