International Journal of RF and Microwave Computer-Aided Engineering最新文献_第10页

Design and Implementation of a Novel Radar Cross Section Reduction Metasurface Covering 12.5-17.4 GHz and 20.5-36.2 GHz 一种覆盖12.5-17.4 GHz和20.5-36.2 GHz的新型雷达截面减小超表面设计与实现

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-09-01 DOI: 10.1155/2023/4859324

Mei-Lin Yu, Xi Hou, Yong-Hong Zhou

{"title":"Design and Implementation of a Novel Radar Cross Section Reduction Metasurface Covering 12.5-17.4 GHz and 20.5-36.2 GHz","authors":"Mei-Lin Yu, Xi Hou, Yong-Hong Zhou","doi":"10.1155/2023/4859324","DOIUrl":"10.1155/2023/4859324","url":null,"abstract":"<div>\u0000 <p>Based on the theory of polarization conversion, this paper designs and implements two electromagnetic units with a 180-degree reflection phase difference in the range of 10-40 GHz. By coding and optimizing the spatial arrangement of the two basic units to obtain a metasurface, which makes the incident electromagnetic waves reflect diffusely, the energy in a single beam direction is reduced to realize the reduction of the radar cross section (RCS). The full wave simulated and experimental results of the reduction of the RCS of the metasurface have been presented. The RCS of the proposed metasurface can be reduced by more than 10 dB in the two broadband bands of 12.5-17.4 GHz and 20.5-36.2 GHz, and the maximum reduction can reach 26 dB, compared with a metallic surface of the same size. In addition, the optimized metasurface can also maintain a good reduction effect under oblique incident wave directions of 30, 45, 60, and 70 degrees. A very good agreement between simulation and measurement results is observed.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/4859324","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42962327","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

Fabrication of C-Band High-Temperature Superconducting Microstrip Triplexer with High Accuracy 高精度c波段高温超导微带三工器的研制

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-31 DOI: 10.1155/2023/3151686

Runbo Jiang, Wei Xie, Shaoqi Yan, Jinding Li, Xiaoling Zhang, Qingduan Meng, Jinhao Dai, Yuefeng Yuan, Chi Zhang, Jia Wang, Chunguang Li, Yun Wu, Xu Wang, Liang Sun

{"title":"Fabrication of C-Band High-Temperature Superconducting Microstrip Triplexer with High Accuracy","authors":"Runbo Jiang, Wei Xie, Shaoqi Yan, Jinding Li, Xiaoling Zhang, Qingduan Meng, Jinhao Dai, Yuefeng Yuan, Chi Zhang, Jia Wang, Chunguang Li, Yun Wu, Xu Wang, Liang Sun","doi":"10.1155/2023/3151686","DOIUrl":"10.1155/2023/3151686","url":null,"abstract":"<div>\u0000 <p>This article presents a miniaturized C-band triplexer fabricated with high-temperature superconducting (HTS) microstrip lines and to be applied to quantum computers. The triplexer consists of three bandpass filters and branch lines. In the design of the bandpass filters, folded step impedance resonators (SIRs) are firstly used to achieve good stopband performances by harmonic suppression. Secondly, cross-coupling structures are also utilized to further improve the passband edge steepness of the bandpass filters. Finally, the parasitic transmission zeros originating from the assembling box sizes are employed to achieve a deeper out-of-band rejection. Three bandpass filters are designed and connected to the common input port of the triplexer. After that, the triplexer is coarsely optimized by advanced design system (ADS) for time-saving and is finely optimized by Sonnet for better accuracy. The optimized layout of the triplexer is fabricated on a 2-inch diameter and 0.5 mm thickness MgO wafer; here, the MgO wafer is double-sided coated with HTS YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub> (YBCO) thin films. The measured passband bandwidths (return loss greater than 12 dB) of the triplexer are 6.420-6.680 GHz, 6.780-7.030 GHz, and 7.110-7.380 GHz, respectively, which satisfy the required design specifications.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/3151686","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43435151","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 Flexible Multiband Dendritic Structure Fractal Antenna for 4G/5G/WLAN/Bluetooth Applications 一种用于4G/5G/WLAN/蓝牙应用的柔性多波段树突状结构分形天线

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-31 DOI: 10.1155/2023/6496757

Zhen Yu, Guodong Zhang, Xiaoying Ran, Ruirong Niu, Runzhi Sun, Ziheng Lin, Zewei Lu

{"title":"A Flexible Multiband Dendritic Structure Fractal Antenna for 4G/5G/WLAN/Bluetooth Applications","authors":"Zhen Yu, Guodong Zhang, Xiaoying Ran, Ruirong Niu, Runzhi Sun, Ziheng Lin, Zewei Lu","doi":"10.1155/2023/6496757","DOIUrl":"10.1155/2023/6496757","url":null,"abstract":"<div>\u0000 <p>In this study, a flexible multiband fractal antenna mimicking dendrite structure is proposed and designed by combining bionics and fractal theory. The dendritic structure of neurons is extracted and simplified into a simple and clear geometric structure. The initial antenna model is obtained by fractal operation on the geometric structure, and finally, four effective bands are obtained. The antenna is printed on a 50<sup>∗</sup>70<sup>∗</sup>0.1 mm<sup>3</sup> polyimide dielectric board and fed by a coplanar waveguide. This paper discusses the effect of the human body on the performance of the antenna and the robustness of the antenna in the bending regime. The gain, efficiency, and cross-polarization of the antenna were tested using a microwave anechoic chamber. The measured antenna covers 1.37 GHz-1.93 GHz (relative bandwidth 35%), 2.25 GHz-2.51 GHz (relative bandwidth 10.7%), 3.13 GHz-3.81 GHz (relative bandwidth 19.3%), and 4.46 GHz-5.5 GHz (relative bandwidth 21.1%) four operating frequency bands. The maximum gain is 6.05 dBi and the maximum efficiency is 91.05%. The antenna can be used for Bluetooth WLAN (Wireless Local Area Network), 4G (4th Generation Communication System), 5G (5th Generation Mobile Communication System), WiMAX (Worldwide Interoperability for Microwave Access), etc. The test results are in good agreement with the simulation results, which proves that the antenna can meet various wireless communication requirements.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6496757","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43552329","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 Miniaturized Low-Loss Switchable Single- and Dual-Band Bandpass Filter 一种小型化低损耗可切换单、双带带通滤波器

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-18 DOI: 10.1155/2023/9025980

Ruonan Mu, Yongle Wu, Leidan Pan, Wei Zhao, Weimin Wang

引用次数: 0

A Compact Tri-Band Penta-Polarization Reconfigurable Planar Antenna for Interference Management in 5G Ultra-Dense Network Environment 用于5G超密集网络环境干扰管理的紧凑型三频五极化可重构平面天线

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-17 DOI: 10.1155/2023/2679182

Joydeep Pal, Bhaskar Gupta

{"title":"A Compact Tri-Band Penta-Polarization Reconfigurable Planar Antenna for Interference Management in 5G Ultra-Dense Network Environment","authors":"Joydeep Pal, Bhaskar Gupta","doi":"10.1155/2023/2679182","DOIUrl":"10.1155/2023/2679182","url":null,"abstract":"<div>\u0000 <p>Interference and multipath are the most common issues in the wireless domain due to the coexistence of a large number of wireless nodes operating within the constraint spectrum. A compact planar antenna with five reconfigurable polarization states in three distinct operating bands is presented in this article. A square patch is enclosed by a square outer ring in the design, and these antennas are coupled-decoupled successively using switching diodes to excite three distinct operating bands. Coplanar microstrip lines are used to feed the orthogonal edges of the antenna. The diagonal corners of the inner and outer ring patches are truncated to realize dual circular polarization (CP) states with proper biasing. Switching diodes are placed at the etched corners to realize vertical (VP) and horizontal (HP) polarization. Both the orthogonal feed lines are activated simultaneously with identical phase and amplitude to realize 45° linear polarization. A low-profile, single-feed, compact prototype reconfigurable microstrip antenna (MSA) is finally designed, fabricated, and measured at 1.8 GHz, 2.4 GHz, and 5.8 GHz bands, respectively. Each operating band shows five distinct operating states. The simulation results for all fifteen states are found to be consistent with the measurement.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2679182","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45907338","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 and Characterization of a Compact Four-Element Microstrip Array Antenna for WiFi-5/6 Routers 用于WiFi-5/6路由器的紧凑型四元微带阵列天线的设计与表征

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-17 DOI: 10.1155/2023/6640730

Liton Chandra Paul, Sarker Saleh Ahmed Ankan, Tithi Rani, Md. Tanvir Rahman Jim, Muharrem Karaaslan, Sk. A. Shezan, Lulu Wang

{"title":"Design and Characterization of a Compact Four-Element Microstrip Array Antenna for WiFi-5/6 Routers","authors":"Liton Chandra Paul, Sarker Saleh Ahmed Ankan, Tithi Rani, Md. Tanvir Rahman Jim, Muharrem Karaaslan, Sk. A. Shezan, Lulu Wang","doi":"10.1155/2023/6640730","DOIUrl":"10.1155/2023/6640730","url":null,"abstract":"<div>\u0000 <p>The WiFi-5 band was the most popular WiFi band until the Federal Communications Commission (FCC) announced a new spectrum of 6 GHz WiFi (5.925–7.125 GHz) for unlicensed users. Our proposed work is about to cover both the 5 GHz and 6 GHz WiFi bands. These two bands have a great impact in the wireless communication field. A low-loss Rogers RT 5880 material is used as the substrate layer, which helps us to make the antenna compact (23 × 40 × 0.79 mm<sup>3</sup>) keeping a good performance profile over the latest high-speed WiFi-5/6 band. The proposed antenna covers a huge bandwidth (simulated BW: 2.85 GHz ranging from 4.50 to 7.35 GHz and measured BW: 2.83 GHz ranging from 4.50 to 7.33 GHz), which can be used for the latest WiFi-5 and WiFi-6 routers. The antenna also has omnidirectional properties. Besides that, the gain and directivity of the antenna are quite good, and the measured results buttress the simulated results. The presented different detail parametric studies indicate the antenna’s optimization level, which is excellent. The minimum values of reflection coefficient and voltage standing wave ratio make it a compatible candidate for the implementation of high-speed WiFi-5/6 routers.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6640730","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45090464","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 of Filtering Coupler Based on Patch Resonator with High Selectivity 基于高选择性贴片谐振器的滤波耦合器设计

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-08-10 DOI: 10.1155/2023/2437462

Xu Shi, Qian Zhang, Shuokun Ma, Han Zhang, Xiang Gao, Rui Li, Gang Zhang

{"title":"Design of Filtering Coupler Based on Patch Resonator with High Selectivity","authors":"Xu Shi, Qian Zhang, Shuokun Ma, Han Zhang, Xiang Gao, Rui Li, Gang Zhang","doi":"10.1155/2023/2437462","DOIUrl":"10.1155/2023/2437462","url":null,"abstract":"<div>\u0000 <p>In this paper, a new approach for designing a planar high frequency selectivity filtering coupler based on a circular patch resonator is proposed. In order to explain the operating principle, the resonant property of the circular patch resonator has been investigated firstly. Two circular patch resonators connected by two microstrip lines are used in this design. A filtering coupler is achieved by adjusting the feeder position and the length and width of the microstrip line used to connect the two resonators. Without additional circuits, the desired 0° and 180° phase differences are realized by the inherent in-phase and out-of-phase characteristics of E-fields at the TM<sub>11</sub> mode. To improve the passband selectivity, transmission zeros are created by introducing a coupling between the source and load through the coupling slots etched on the ground. Finally, a prototype of the filtering coupler centered at 2.12 GHz is designed, implemented, and tested, while the measured results coincide well with simulated ones, verifying the proposed design concept.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2437462","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49216463","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

Broadband RCS Reduction Using Circular Sector Structure 利用环形扇区结构减少宽带RCS

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-06-29 DOI: 10.1155/2023/9669195

Huijuan Dai, Po Li, ShuYing Li, WenJun Qi, Chen Yu, YanQin Ma

{"title":"Broadband RCS Reduction Using Circular Sector Structure","authors":"Huijuan Dai, Po Li, ShuYing Li, WenJun Qi, Chen Yu, YanQin Ma","doi":"10.1155/2023/9669195","DOIUrl":"10.1155/2023/9669195","url":null,"abstract":"<div>\u0000 <p>In this paper, a new metasurface structure is designed to reduce radar cross section (RCS). In order to reduce the radar cross section (RCS), a new metasurface structure is designed. The unit adopts the polarization conversion metasurface structure, which is composed of asymmetric double arrow-shaped metal structure and etched on the dielectric substrate on the back of the metal plate. This polarization conversion metasurface (PCM) unit consists of asymmetric double arrow-shaped metal structure, and it is etched on a dielectric substrate backed with metallic plate. It can realize converting linear polarized waves to orthogonal ones in a broadband from 18.1 GHz to 32.7 GHz efficiently. According to the further development of the triangle chessboard layout, we also designed several new circular fan-shaped configurations, which realize RCS reduction in a wider -10 dB bandwidth compared with the triangle chessboard configuration. Finally, an optimized 8-lobed circular sector configuration composed of the designed PCM unit is selected for processing and testing. It can realize the RCS reduction greater than 10 dB in a wide bandwidth ranging from 13.7 GHz to 27.5 GHz, compared with the equal-sized metallic-backed dielectric substrate plate. The experimental results basically agree with the simulation ones. The proposed broadband circular sector structure has broad application prospects such as phased array antenna technology, electromagnetic stealth technology, and electromagnetic absorption technology.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/9669195","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46604136","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

Generalized Complex-to-Complex Impedance Transformers Based on Conjugately Characteristic-Impedance Transmission Lines 基于共轭特性阻抗传输线的广义复阻抗变换器

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-06-26 DOI: 10.1155/2023/2311010

Thanatcha Satitchantrakul, Akkarat Boonpoonga, Danai Torrungrueng

引用次数: 0

A Wideband Highly Efficient Omnidirectional Compact Antenna for WiMAX/Lower 5G Communications 一种适用于WiMAX/Low 5G通信的宽带高效全向紧凑型天线

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-06-21 DOI: 10.1155/2023/7237444

Liton Chandra Paul, Sarker Saleh Ahmed Ankan, Tithi Rani, Muharrem Karaaslan, Md. Najmul Hossain, Ahmed Jamal Abdullah Al-Gburi, Himel Kumar Saha, Fatih Özkan Alkurt

{"title":"A Wideband Highly Efficient Omnidirectional Compact Antenna for WiMAX/Lower 5G Communications","authors":"Liton Chandra Paul, Sarker Saleh Ahmed Ankan, Tithi Rani, Muharrem Karaaslan, Md. Najmul Hossain, Ahmed Jamal Abdullah Al-Gburi, Himel Kumar Saha, Fatih Özkan Alkurt","doi":"10.1155/2023/7237444","DOIUrl":"10.1155/2023/7237444","url":null,"abstract":"<div>\u0000 <p>Microstrip patch antenna (MPA) is widely used for different wireless communications such as WiMAX and fifth generation (5G). In this paper, a wideband, highly efficient, omnidirectional, compact novel patch antenna has been designed and reported for WiMAX/lower 5G communications. The proposed compact MPA is made on Rogers RT 5880 (<i>ɛ</i><sub><i>r</i></sub> = 2.2 and tan (<i>δ</i>) = 0.0009). The physical volume of the MPA is compact (32 × 32 × 0.79 mm<sup>3</sup>). The MPA consists of seven small square-shaped elements that are diagonally connected with each other. The 7-element antenna works at 3.592 GHz with a suitable reflection coefficient of -46.78 dB and a -10 dB bandwidth (BW) of 1.40 GHz, covering 3.10-4.50 GHz. The apex gain (<i>G</i>) and the directivity (<i>D</i>) of the designed prototype are 3.90 dB and 4.20 dBi, respectively. The antenna maintains a high efficiency of 94-98% over the 3.10-4.50 GHz operating range. The VSWR of the antenna is close to unity, which is 1.0092 at 3.592 GHz. Initially, CST is used to design the antenna, and then, all the properties have been buttressed by using high frequency structure simulator (HFSS). Finally, a prototype of the compact 7-element antenna has been developed and measured. Owing to getting good results for the intended applications, the presented compact antenna can be a reliable candidate for WiMAX (3.4-3.6 GHz) and lower 5G (3.3-4.2 GHz).</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/7237444","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47033762","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