International Journal of RF and Microwave Computer-Aided Engineering最新文献_第7页

A Novel Antenna Design of Compact HF and UHF Passive RFID Tags with Interconnected Structure for Energy Harvesting and Tracking Systems 用于能量收集和跟踪系统的具有互连结构的紧凑型高频和超高频无源射频识别标签的新型天线设计

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-24 DOI: 10.1155/2024/9923732

Supakit Kawdungta, Theerayut Mhunkaew, Danai Torrungrueng, Hsi-Tseng Chou

{"title":"A Novel Antenna Design of Compact HF and UHF Passive RFID Tags with Interconnected Structure for Energy Harvesting and Tracking Systems","authors":"Supakit Kawdungta, Theerayut Mhunkaew, Danai Torrungrueng, Hsi-Tseng Chou","doi":"10.1155/2024/9923732","DOIUrl":"10.1155/2024/9923732","url":null,"abstract":"<div>\u0000 <p>We propose a new dual-band passive RFID tag antenna design by combining a rectangular spiral coil and patch-meander-line dipole with an interconnected structure. This design enables operation in high-frequency (HF) and ultra-high-frequency (UHF) RFID systems, suitable for energy harvesting and tracking applications. The simulations by the CST full-wave software demonstrate conjugate impedance matching between the tag antenna and two RFID tag chips. At 13.56 MHz (HF), the tag antenna exhibits an inductive reactance of 422.79 <i>Ω</i>, while at 922.5 MHz (UHF), it presents an impedance of 9.41 + <i>j</i>174.96 <i>Ω</i>. The antenna generates a maximum magnetic field intensity of 0.5 A/m and omnidirectional electromagnetic fields with an antenna realized gain of -4.26 dBi at 922.5 MHz. We also analyze the impact of the tag antenna combination using numerical software. Furthermore, we fabricate a prototype tag antenna and validate its performance with RFID readers. The proposed tag antenna achieves the maximum read ranges of 11 cm and 6.9 m for the HF (13.56 MHz) and UHF (920-925 MHz) bands, respectively, accompanied by the energy harvesting of 1.48 volts at the HF band by the coupling magnetic field received by the HF antenna to the chip ST25DV04K at the output voltage pin.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/9923732","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139599546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Realization of a Wide Stopband Filter Using the Weakest Electric Field Method and Electromagnetic Hybrid Coupling Method 利用最弱电场法和电磁混合耦合法实现宽截止带滤波器

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-24 DOI: 10.1155/2024/9298815

Xiaohei Yan, Minjie Guo

{"title":"Realization of a Wide Stopband Filter Using the Weakest Electric Field Method and Electromagnetic Hybrid Coupling Method","authors":"Xiaohei Yan, Minjie Guo","doi":"10.1155/2024/9298815","DOIUrl":"10.1155/2024/9298815","url":null,"abstract":"<div>\u0000 <p>To enhance filter performance in terms of stopband, we propose a wide-stopband substrate-integrated waveguide filter based on the rejection of higher-order modes. The filter establishes the inner and outer coupling windows at the mode’s weakest electric field to achieve mode suppression. Simultaneously, we employ the electromagnetic hybrid coupling theory to analyze the electromagnetic distribution of the particular modes and determine the dimensions of the coupling circular apertures and slits based on the extracted coupling coefficients to attain suppression of the specific modes. The filter successfully suppresses all higher-order modes having resonant frequencies below that of the TE<sub>150</sub> mode, as demonstrated by simulation results. We conducted measurements and found that the filter has a center frequency of 4.78 GHz, a bandwidth of 100 MHz with a -3 dB attenuation, and a stopband of -25 dB that extends up to 16.62 GHz (i.e., 3.48 times the center frequency). Simulation and measurement results demonstrate a good correlation. This method, compared to other SIW filters, is easy to design, has a wider stopband range, can be readily applied to practical microwave communication systems, and has potential applications.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/9298815","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139602654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Review of Over-the-Air Testing Methods for Performance Measurement of Antennas and Devices in Communication Systems 通信系统中天线和设备性能测量的空中测试方法综述

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-16 DOI: 10.1155/2024/6660144

Siqi Duan, Weimin Wang, Bihua Tang, Yongle Wu, Yuanan Liu

{"title":"A Review of Over-the-Air Testing Methods for Performance Measurement of Antennas and Devices in Communication Systems","authors":"Siqi Duan, Weimin Wang, Bihua Tang, Yongle Wu, Yuanan Liu","doi":"10.1155/2024/6660144","DOIUrl":"10.1155/2024/6660144","url":null,"abstract":"<div>\u0000 <p>With the fast development of communication techniques, over-the-air testing has developed into the main testing method for current communication systems due to its advantages including no cable connection, high measurement efficiency, and independence from environment. OTA testing has become almost the only solution for 5G system testing especially after the popularity of 5G massive multiple-input-multiple-output. In this paper, we summarize the three main methods of OTA testing including the reverberation chamber-based method, the radiation two-step method, and the multiprobe anechoic chamber- (MPAC-) based method, among which we focus on the MPAC method systematically. In the MPAC method, there are two main channel synthesis techniques that have been heavily studied, namely, prefaded signal synthesis and plane wave synthesis. We summarize the current main research based on these two techniques including probe configurations, probe selection algorithms, and probe design based on the PFS technique and the design of plane wave generators based on PWS technique. The main comparisons are made for the performance of different probe selection algorithms and the performance of different plane wave generators as well as the latest advances.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/6660144","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139527595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analyzing Three Types of Design Methods for 5G N41 Band Acoustic Wave Filters 分析 5G N41 频带声波滤波器的三种设计方法

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-13 DOI: 10.1155/2024/4638443

Youna Jang, Dal Ahn

{"title":"Analyzing Three Types of Design Methods for 5G N41 Band Acoustic Wave Filters","authors":"Youna Jang, Dal Ahn","doi":"10.1155/2024/4638443","DOIUrl":"10.1155/2024/4638443","url":null,"abstract":"<div>\u0000 <p>This paper presents three design methods for acoustic wave (AW) filters: the direct conversion design method, the slope parameter method, and the band edge fitting method (BEFM). Since the conventional BVD model consists only of lumped elements and has accuracy only near the resonance frequency, an NM-BVD model capable of broadband modeling is proposed in this paper and used to design the filter. In the proposed BEFM, a systematically optimal filter method is used to design the AW filter, and each AW resonator is tuned to the filter prototype value to meet the desired specifications. Thus, the filter design time and the number of resonators can be efficiently improved, and the filter design time can be reduced compared with the direct conversion and slope parameter methods commonly used in filter design. To demonstrate the effectiveness of these design methods, the proposed methods were used to design and fabricate an N41 filter using scandium-doped aluminum nitride (ScAlN) resonators. The broadband capabilities of the filter were verified using BEFM. The design, fabrication, and measurement of a broadband filter that meets the requirements of the 5G N41 frequency band centered at 2.593 GHz with a bandwidth of 196 MHz have verified the filter fabricated using the proposed design method. The insertion loss is less than -3 dB in the target band and more than 30 dB out of band. In summary, the proposed BEFM provides an efficient and accurate method for designing AW filters.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/4638443","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design a Compact and Miniaturized Unit Cell in Substrate Integrated Plasmonic Waveguides 在基底集成的等离子体波导中设计紧凑、小型化的单元单元

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-11 DOI: 10.1155/2024/5149636

Salma Mirhadi, Zahra Javidi, Nader Komjani

{"title":"Design a Compact and Miniaturized Unit Cell in Substrate Integrated Plasmonic Waveguides","authors":"Salma Mirhadi, Zahra Javidi, Nader Komjani","doi":"10.1155/2024/5149636","DOIUrl":"10.1155/2024/5149636","url":null,"abstract":"<div>\u0000 <p>This paper presents a novel procedure to design a compact and miniaturized unit cell in the substrate integrated plasmonic waveguide (SIPW) structures. The slot of the unit cell is automatically obtained in this method without needing any prior knowledge of its shape. The method is based on topology optimization through pixelization of the slot surface in the unit cell and uses a combination of binary particle swarm optimization (BPSO) and commercial electromagnetic (EM) software. With this method, first, the shapes of the two unit cells are engineered to arbitrarily reduce the high cut-off frequency. Then, two low-pass filters consisting of the proposed unit cells are designed and simulated. To further verify the proposed procedure, one of the filters is fabricated, whose measurement results are in good agreement with the simulation results. This filter provides a pass band of 5.6 to 6.3 GHz and has dimensions of 0.82<i>λ</i><sub><i>g</i></sub> × 0.22<i>λ</i><sub><i>g</i></sub>. The proposed method has the potential to minimize microwave and terahertz devices.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/5149636","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139626770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability 一种高增益宽带法布里-佩罗天线，采用水基频率选择性表面，具有极化和 RCS 可重构性

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-10 DOI: 10.1155/2024/1804375

Ying Wang, Zhiming Liu, Huilin Zhou, Jens Bornemann, Yuhao Wang, Xiangkun Kong

{"title":"A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability","authors":"Ying Wang, Zhiming Liu, Huilin Zhou, Jens Bornemann, Yuhao Wang, Xiangkun Kong","doi":"10.1155/2024/1804375","DOIUrl":"10.1155/2024/1804375","url":null,"abstract":"<div>\u0000 <p>A Fabry-Pérot (FP) antenna with wideband dual-polarization and radar cross section- (RCS-) reconfigurability adopting water-based frequency selective surface (FSS) is presented. The feed antenna is designed to switch between horizontal polarization (HP) and vertical polarization (VP) by controlling the on/off states of two PIN diodes. By optimizing the height of the FP resonant cavity, the proposed FP antenna achieves wideband and high-gain properties. In addition, the incident wave can be absorbed when the polymethyl methacrylate (PMMA) container is filled with water, which reduces the monostatic RCS. This design can be selected to be in stealth mode or radiation mode by injecting water into or extracting water from the water container. The measured results indicate that in stealth mode, the 10-dB RCS reduction band is from 4.5 GHz to 6.4 GHz, and the peak RCS reduction is 31.5 dB at 5.2 GHz. In the radiation mode, the realized gains of the FP antenna in both HP and VP at 5.2 GHz reach 16.6 dBi. Simulated and measured results verify the realizability and operational concept of the designed FP antenna.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/1804375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139441579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evolutionary Algorithm-Inspired Binary Sequence-Based Hybrid Fault Detection Method for Nonuniformly Excited Linear Antenna Array 进化算法启发的基于二进制序列的非均匀激励线性天线阵列混合故障检测方法

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-05 DOI: 10.1155/2024/9976061

Sandipan Mitra, Soumyo Chatterjee, Sayan Chatterjee, Bhaskar Gupta

引用次数: 0

Asymmetric Coplanar Strip- (ACS-) Fed Side Edge Panel MIMO Antenna for IoT and 5G Applications 用于物联网和 5G 应用的非对称共面带 (ACS-) 馈电侧缘面板 MIMO 天线

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-12-28 DOI: 10.1155/2023/4814376

Issmat Shah Masoodi, Javaid A. Sheikh, Zahid A. Bhat, Shazia Ashraf, Shabir A. Parah

{"title":"Asymmetric Coplanar Strip- (ACS-) Fed Side Edge Panel MIMO Antenna for IoT and 5G Applications","authors":"Issmat Shah Masoodi, Javaid A. Sheikh, Zahid A. Bhat, Shazia Ashraf, Shabir A. Parah","doi":"10.1155/2023/4814376","DOIUrl":"10.1155/2023/4814376","url":null,"abstract":"<div>\u0000 <p>For future wireless high-speed wireless applications, the antenna design plays an indispensable role. Electrical compactness has been challenging over the years among the research fraternity. Hence, this paper proposes an electrically compact and miniaturized asymmetric coplanar strip- (ACS-) fed MIMO to bridge this research gap. In MIMO antennas, two electrically small antennas are used and are placed on the edges of the smartphone. A ladder-shaped radiator with a C-shaped slit inserted on the ground plane makes up the antenna’s monopole radiator. A compact antenna is proposed in this paper with dimensions of 0.076 <i>λ</i> × 0.409 <i>λ</i> × 0.005 <i>λ</i>. This achieves dual band characteristics, which cater to 3.5/5.5 GHz (WiMAX), 5.8 GHz (WLAN), 6.3 GHz (C-band), and sub-6 GHz 5G bands. For the available aperture, reasonable gain is attained by the proposed architecture. Furthermore, fractional bandwidth of 69% and 43% in 2.6 GHz and 5.5 GHz bands, respectively, acting in accordance with the bandwidth stated by Wheeler and Chu’s limit, has been attained in this ACS-fed antenna. In both the operating frequency bands, more than 20 dB isolation between the antenna elements has been achieved. High integrity is attained by the radiation pattern, and actual deployment is granted. Moreover, the simulated results presented are in good accordance with the measured results.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/4814376","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139148701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Theoretical Design of Angular-Phased Broadband Antenna Array for Submillimeter Wave Applications 亚毫米波应用的角相位宽带天线阵列理论设计

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-12-28 DOI: 10.1155/2023/3754725

Tushar Goel, Anuradha Sonker, A. K. Gautam, Amalendu Patnaik

引用次数: 0

A Sub-6 GHz Switching System for Simultaneous Use of 2-Port Network Analyzer by 4 Users 供 4 名用户同时使用 2 端口网络分析仪的 6 千兆赫以下交换系统

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-12-22 DOI: 10.1155/2023/8827119

Youna Jang, Chang In Baek, Dong Min Kim, Dal Ahn, Seong-Ho Son

引用次数: 0