International Journal of RF and Microwave Computer-Aided Engineering最新文献_第2页

Selective Manipulation of Microwaves by a Cascade of Independent Metasurfaces Based on Planar Spirals 基于平面螺旋的独立超表面级联对微波的选择性操纵

IF 1 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-07-30 DOI: 10.1155/mmce/2346639

Ivan Fanyaev, Andrei Samofalov, Alexander Kravchenko, Dazhi Ding, Mengmeng Li, Igor Semchenko, Sergei Khakhomov, Ihar Faniayeu

{"title":"Selective Manipulation of Microwaves by a Cascade of Independent Metasurfaces Based on Planar Spirals","authors":"Ivan Fanyaev, Andrei Samofalov, Alexander Kravchenko, Dazhi Ding, Mengmeng Li, Igor Semchenko, Sergei Khakhomov, Ihar Faniayeu","doi":"10.1155/mmce/2346639","DOIUrl":"https://doi.org/10.1155/mmce/2346639","url":null,"abstract":"We propose a multifunctional cascade metasurface designed for manipulating electromagnetic waves in the microwave frequency range with comprehensive theoretical analysis, design optimization, and experimental validation. A set of electrically thin metasurfaces based on planar spirals with free space impedance is used to manipulate electromagnetic waves. The metasurfaces simultaneously generate distinct, independent, and mutually compatible wave transformations at various frequencies. A multifunctional cascade metasurface integrates several functional devices, including a reflective cross-polarizer, a transmissive cross-polarizer, and a nonreflective absorber. Each designed metasurface has a free space impedance over a sufficiently wide frequency range that encompasses the operating frequencies of all metasurfaces. This attribute guarantees the autonomous and mutually noninterfering functioning of all metasurfaces in the cascade.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/2346639","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144725396","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 Interdigital-Coupled Microstrip Line Bandpass Filters in the 28 and 38 GHz 28 GHz和38 GHz间数耦合微带线带通滤波器的设计

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-07-29 DOI: 10.1155/mmce/9859221

Ming-An Chung, Chia-Wei Lin, Bing-Ruei Chuang

引用次数: 0

A Quad-Fed Triband Circularly Polarized Patch Antenna Based on Three Resonant Modes 基于三种谐振模式的四馈三带圆极化贴片天线

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-07-28 DOI: 10.1155/mmce/7868805

Chang-Feng Liang, Fang Yuan, Bao-Guang Liu, Yun-Peng Lyu

{"title":"A Quad-Fed Triband Circularly Polarized Patch Antenna Based on Three Resonant Modes","authors":"Chang-Feng Liang, Fang Yuan, Bao-Guang Liu, Yun-Peng Lyu","doi":"10.1155/mmce/7868805","DOIUrl":"https://doi.org/10.1155/mmce/7868805","url":null,"abstract":"A quad-fed triband circularly polarized (CP) patch antenna based on three resonant modes is proposed in this paper. This antenna consists of a square patch loaded with an open cross slots, two pairs of arc slots, and four shorting pins. The acquisition of the three bands is attributed to the simultaneous excitation of TM11 mode of circular patch, TM10 mode of square patch, and the one-wavelength cross slot mode. The TM11 mode of circular patch is excited by the cooperation of the arc slots and the shorting pins, while the loading of the open cross slot moves the TM10 and TM21 modes of the square patch to a higher frequency. Furthermore, the introduction of the arc slots improves the impedance matching of the one-wavelength cross slot mode. The equivalent circuit of the proposed quad-fed patch antenna is established, and its validity is verified. For implementing CP radiation with the same sense in all three bands, a sequential phase feed network is designed and cooperated with the antenna. In order to verify the design concept, an antenna prototype is fabricated and measured. The measured results show that the VSWR is less than 2 in 2.54–5.5 GHz, which can cover the three frequency bands of the proposed antenna. The AR bandwidths in three bands are 33.1%, 27.6%, and 8.6%, respectively. The peak RHCP gains in the three bands are 5, 9.9, and 4.1 dBic, respectively. The profile is 0.032λ0 (λ0 is the wavelength in the free space at 3.2 GHz).","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/7868805","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716480","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 Triple-Band Slotted Planar Antenna for WLAN/WiMAX and 5G Applications 面向WLAN/WiMAX和5G应用的三频带开槽平面天线设计

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-07-24 DOI: 10.1155/mmce/9919578

Lalit Kumar, Anil Kumar Gautam

{"title":"Design of Triple-Band Slotted Planar Antenna for WLAN/WiMAX and 5G Applications","authors":"Lalit Kumar, Anil Kumar Gautam","doi":"10.1155/mmce/9919578","DOIUrl":"https://doi.org/10.1155/mmce/9919578","url":null,"abstract":"This paper presents a new small, low-profile planar triple-band microstrip antenna for WLAN/WiMAX and 5G applications. Nowadays, various wireless services are being integrated into a single device, so these devices require multiband resonant antennas to maintain their compact and portable size. Therefore, the aim of current research was to combine WLAN WiMAX and 5G communication standards together into a single wireless device by designing an antenna that can stimulate triple-band operation. The proposed antenna consists of circular-shaped rectangular slotted radiator encircled by a rectangular ring and a defected ground plane. The designed antenna has a compact size of 20 × 32 mm2 (0.16λ0 × 0.256λ0). The optimum dimensions were obtained using parametric studies of the key parameters of the antenna. The proposed antenna offers three different bands—I 2.3–2.70, II 3.2–3.92, and III 5.1–5.9 GHz, which clearly covers the entire WLAN (2.4/5.2/5.8 GHz), WiMAX (2.5/3.5/5.5), and 5G bands. Finally, a proposed antenna was built and studied experimentally to verify the design concept as well as validate the simulation results. The good agreement of the simulation results with the measured results proved that the antenna can simultaneously operate on WLAN (2.4/5.2/5.8 GHz), WiMAX (2.5/3.5/5.5 GHz), and 5G frequency bands. This antenna is a suitable candidate for a device that can be used for these three services simultaneously.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/9919578","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144688036","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

Manifold Frequency Division Multiplexer With Narrowband SIW–SSPP Hybrid Filters 窄带SIW-SSPP混合滤波器的流形频分多路复用器

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-07-01 DOI: 10.1155/mmce/3609689

Yasong Wang, Zeyuan Lv, Zhaolin Li, Xianzhong Tian, Yevhen Yashchyshyn, Yanpeng Shi, Qinglei Guo, Aimin Song, Yifei Zhang

{"title":"Manifold Frequency Division Multiplexer With Narrowband SIW–SSPP Hybrid Filters","authors":"Yasong Wang, Zeyuan Lv, Zhaolin Li, Xianzhong Tian, Yevhen Yashchyshyn, Yanpeng Shi, Qinglei Guo, Aimin Song, Yifei Zhang","doi":"10.1155/mmce/3609689","DOIUrl":"https://doi.org/10.1155/mmce/3609689","url":null,"abstract":"A manifold-coupled multiplexer comprising substrate integrated waveguide (SIW)–spoof surface plasmon polariton (SSPP) hybrid filters and a microstrip line network is proposed for Ka-band applications, achieving a compact profile and low insertion loss. The narrowband hybrid filter is designed by converging the cut-off frequencies of SIWs and SSPPs, which may avoid the high-order modes of the resonant filters, and two SSPP slots are chosen for filter miniaturization without significantly sacrificing the cut-off response. A short taper is designed to connect the hybrid filter and microstrip lines, and the microstrip line network is carefully optimized to match the manifold phase configuration with a compact size. A prototype is fabricated and characterized for demonstration. The experimental insertion loss is 2.10, 2.49, and 2.61 dB at 28.2, 29.7, and 31.2 GHz, respectively, and the corresponding 3 dB bandwidth is 4.1%, 4.7%, and 4.8%, respectively, showing a good match with the simulation. The reflection loss is larger than 10 dB from 27.8 to 31.4 GHz. Considering the promising out-of-band rejection of the hybrid filters, such a configuration should be suitable for multiplexers with large channel numbers and may find many applications in ultra-wideband and multifunctional communication systems.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/3609689","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144520092","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

Corrigendum to “Compact Millimeter-Wave Antenna Array With Low Sidelobe Level for Vital Sign Monitoring Application” “用于生命体征监测的低旁瓣电平紧凑型毫米波天线阵列”的勘误表

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-06-13 DOI: 10.1155/mmce/9891580

引用次数: 0

Power Efficiency Improvement for Dual–Dielectric Resonator Oscillators 双介质谐振振荡器的功率效率改进

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-05-18 DOI: 10.1155/mmce/6052612

Sam Moeini, Mahmoud Shahabadi, Arash Dana

{"title":"Power Efficiency Improvement for Dual–Dielectric Resonator Oscillators","authors":"Sam Moeini, Mahmoud Shahabadi, Arash Dana","doi":"10.1155/mmce/6052612","DOIUrl":"https://doi.org/10.1155/mmce/6052612","url":null,"abstract":"A dual–dielectric resonator oscillator (DDRO) was previously introduced as a promising configuration for wireless power transfer (WPT), achieving a wireless power level of 13.07 dBm with a DC-to-RF efficiency of 19.50%. This work presents the design, simulation, and implementation of a single-port WPT system employing a parallel-feedback DDRO for increasing the output power level. The design incorporates a 7.5-GHz oscillator network featuring a class AB common-source power amplifier transistor integrated with a dielectric resonator (DR)–based WPT. By utilizing a parallel-feedback oscillator circuit, which enables efficient impedance matching through load-pull analysis and eliminates the need for a lossy termination at the end of the feed line, and optimizing the coupling structure for the transmitter DR, the output power level and the DC-to-RF conversion efficiency have been significantly improved. The implemented circuit delivers a measured wireless power level of 14.83 dBm, showing an improvement of approximately 2 dB, with a DC-to-RF efficiency of 36.85% at 7.5 GHz, while maintaining a transmission bandwidth of 150 MHz. This capability facilitates simultaneous transmission of both power and data over a single channel. The paper also presents an accurate model for design purposes and demonstrates validity of the model using our measurement results.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/6052612","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144085312","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

Compact Dual-Band Band-Pass Filter Using Single Multimode SIW Cavity With Independent Controllable Fractional Bandwidth 采用独立可控分数带宽的单模SIW腔的紧凑双带带通滤波器

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-04-26 DOI: 10.1155/mmce/9968988

Ch. Suresh Kumar, Runa Kumari, Harish V. Dixit

引用次数: 0

Automatic Antenna Orientation Using the Algorithm Compatible With the Wireless Energy Harvesting System 兼容无线能量采集系统的天线自动定位算法

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-04-26 DOI: 10.1155/mmce/8729956

Saeed Hosseini, Changiz Ghobadi, Javad Nourinia, Majid Shokri

{"title":"Automatic Antenna Orientation Using the Algorithm Compatible With the Wireless Energy Harvesting System","authors":"Saeed Hosseini, Changiz Ghobadi, Javad Nourinia, Majid Shokri","doi":"10.1155/mmce/8729956","DOIUrl":"https://doi.org/10.1155/mmce/8729956","url":null,"abstract":"In wireless telecommunication systems, the precise adjustment of the antenna direction has a direct effect on the quality of the received signal. In this article, a new routing algorithm is designed using the wireless energy harvesting (WEH) technology from electromagnetic waves to adjust the orientation of the receiver antenna. The algorithm is simulated for routing in TDD LTE cellular network at 2.35 GHz frequency. The proposed antenna in this article is a cross-dipole type with dual-polarization RHCP and LHCP, and its measured impedance bandwidths are 1.97–2.70 GHz at Port 1 and 1.96–2.72 GHz at Port 2. Also, 7.45 dBic peak gain and end-fire radiation capability of the proposed antenna are among the advantages of the automatic routing system. The proposed rectifier for WEH uses the voltage doubler technique. A new construction of microstrip elements has been used for the impedance matching network (IMN). The fabricated rectifier at 2.35 GHz can provide PCE = 52.8% at −0.5 dBm input power, which is suitable for WEH.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/8729956","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143875653","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

Performance Evaluation of Wideband Dual Port Octagonal-Shaped Millimeter-Wave MIMO Antenna for Satellite Communication 卫星通信宽带双端口八角形毫米波MIMO天线性能评价

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2025-04-22 DOI: 10.1155/mmce/1456913

Poonam Tiwari, Manoj Kumar Gaur, Meenu Kaushik, Anshuman Shastri, Bhupender Singh, Vishant Gahlaut

{"title":"Performance Evaluation of Wideband Dual Port Octagonal-Shaped Millimeter-Wave MIMO Antenna for Satellite Communication","authors":"Poonam Tiwari, Manoj Kumar Gaur, Meenu Kaushik, Anshuman Shastri, Bhupender Singh, Vishant Gahlaut","doi":"10.1155/mmce/1456913","DOIUrl":"https://doi.org/10.1155/mmce/1456913","url":null,"abstract":"A printed MIMO antenna specifically designed for small satellite communication has been presented in this paper. The antenna is invented of two radiators resonating at millimeter-wave and constructed using Rogers’s RT duroid 5880. The design includes two identical octagonal patches with a diamond-shaped slot and having two quadrilateral notches. These elements are placed over a substrate and connected to a microstrip transmission line that embeds a quarter-wave transformer. To establish the effectiveness of the MIMO antenna being proposed, a comparative analysis is conducted between its simulated and experimental performance. Each radiator in the antenna setup includes partial ground, which forms the back layer of the substrate. The design is simulated on the CST tool, and measurements are conducted on a Rohde and Schwarz vector network analyzer. The obtained results show a favorable level of agreement with the simulated outcomes, validating the effectiveness of the proposed MIMO antenna. The antenna design offers exceptional features such as wide bandwidth, self-isolated, high gain, and a directional radiation pattern while also supporting a wide frequency band, making it an ideal choice for 28 GHz band applications. The performance of MIMO antennas in diversity can be determined using parameters such as envelope correlation coefficient (ECC), diversity gain (DG), and total active reflection coefficient (TARC). Satellite communication will be improved by implementing the suggested MIMO antenna through upgrading small satellite communication systems.","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2025 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/mmce/1456913","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856897","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