International Journal of RF and Microwave Computer-Aided Engineering最新文献_第9页

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

A Multipolarized Traveling-Wave Series-Fed Antenna Array Based on Patch 基于贴片的多极化行波串馈天线阵列

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-12-08 DOI: 10.1155/2023/8895596

Xin Guan, Zhenghui Xue, Wu Ren, Weiming Li

引用次数: 0

Design Optimization of Feeding Networks with a Special Size for Self-Interference Cancellation 针对自干扰消除的特殊尺寸馈电网络的设计优化

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-30 DOI: 10.1155/2023/2957545

Xiaotian Huang, Baohua Sun, Li Sun, Rui Zhang, Wei Niu, Ruize Niu

引用次数: 0

Applied Cavity Perturbation Used for Frequency Identification of Channel Ports in Manifold-Coupled Multiplexers 应用空腔扰动识别歧管耦合多路复用器中的通道端口频率

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-28 DOI: 10.1155/2023/8302207

Sayyed Reza Mirnaziry, Ali Kheirdoost, Maysam Haghparast, Ali Akbar Ahmadi

{"title":"Applied Cavity Perturbation Used for Frequency Identification of Channel Ports in Manifold-Coupled Multiplexers","authors":"Sayyed Reza Mirnaziry, Ali Kheirdoost, Maysam Haghparast, Ali Akbar Ahmadi","doi":"10.1155/2023/8302207","DOIUrl":"10.1155/2023/8302207","url":null,"abstract":"<div>\u0000 <p>We investigate a practical technique for deembedding the channel filter S-parameters of manifold-coupled multiplexers (MUXs), without detaching filters from the manifold. The method is applicable for MUXs with an arbitrary number of channels and can be used for the device regardless of its bandwidth, guard band, or loss of filters. We reconfigure the N-port MUX to two simpler networks cascaded to each other. We assume that the manifold response is unknown and use the idea of applied perturbation on the channel filter, and then by comparing the response of the overall cascaded network, before and after the perturbation, we approximate the channel port response. The technique is useful in fast detecting the unexpectedly detuned channels or likely faults in the device without unnecessary plugging/unplugging; it is also useful in roughly tuning of the channel filers at the early stage of MUX tuning. The technique can be easily traced by the telecommunication community.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/8302207","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139215580","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

Systematic Analysis of Rotated Dual-Split Elliptical SRR with Band-Stop Characteristics 具有带挡特性的旋转双分裂椭圆 SRR 系统分析

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-28 DOI: 10.1155/2023/5527842

Swarnadipto Ghosh, Dipankar Saha, Ayona Chakraborty, Samik Chakraborty, Bhaskar Gupta

{"title":"Systematic Analysis of Rotated Dual-Split Elliptical SRR with Band-Stop Characteristics","authors":"Swarnadipto Ghosh, Dipankar Saha, Ayona Chakraborty, Samik Chakraborty, Bhaskar Gupta","doi":"10.1155/2023/5527842","DOIUrl":"10.1155/2023/5527842","url":null,"abstract":"<div>\u0000 <p>In this research article, a novel double-split elliptical split ring resonator (DS-ESRR) is proposed to achieve frequency-notching behavior of ultrawideband filtenna, where the semimajor and minor axes of the ellipse are taken as a bivariate random variable and expressed in Ramanujan’s correction coefficient so that more degree of freedom is available for choosing degenerated impedance and thus for variable frequency-notching applications. To verify this hypothetical method, finite sets of variables for DS-ESRR are presented in this proposed work, and a mathematical expression is formulated to estimate the resonant frequency of the DS-ESRR, such that for practical applications, frequency-notching parameters can be easily estimated accurately rather than previously used SRR like circular or square-shaped geometry. DS-ESRR is deployed at the back of a CPW-fed ultrawideband antenna for notching filter application, and the computed data is compared with the eigen mode simulation results which reveal good agreement with each other.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/5527842","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139220887","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 Millimeter-Wave Antenna Array with Low Sidelobe Level for Vital Sign Monitoring Application 用于生命体征监测应用的低侧射水平紧凑型毫米波天线阵列

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-25 DOI: 10.1155/2023/6256889

Mengxue He, Jie Yun, Boning Wang, Xuning Zhang, Xin Liao

{"title":"Compact Millimeter-Wave Antenna Array with Low Sidelobe Level for Vital Sign Monitoring Application","authors":"Mengxue He, Jie Yun, Boning Wang, Xuning Zhang, Xin Liao","doi":"10.1155/2023/6256889","DOIUrl":"10.1155/2023/6256889","url":null,"abstract":"<div>\u0000 <p>In this paper, an antenna array fed in series by a novel substrate-integrated waveguide (SIW) power divider is proposed for the millimeter-wave band vital sign monitoring application. The proposed antenna is printed on a single-layer substrate, with the advantages of low profile, low cost, and ease of fabrication. By branching microstrip lines alternatively at both edges of the SIW, an in-phase power divider is first constructed. Then, by appropriately adjusting the depth of microstrip branches into the SIW, the amplitude of the output power can be tuned to obtain the desired amplitude distribution. Patches are connected to the microstrip branches, respectively, and thus, a radiation pattern with a low sidelobe level is realized. More importantly, series patches can be cascaded to enhance the array gain without the additional feeding network. This leads to a compact configuration. Based on the proposed idea, a prototype is designed, implemented, and tested. The results indicate that the proposed array achieves a maximum gain of 17.8 dBi with a low sidelobe level of -25.5 dB. The attractive performance shows that the array is suitable for the millimeter-wave vital sign monitoring application.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/6256889","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139236549","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

The Design of Miniature Frequency Reconfigurable Antenna Based on Inductive Loading Technology 基于感应加载技术的微型频率可重构天线设计

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-23 DOI: 10.1155/2023/2913342

Yuqiu Shang, Qingsheng Zeng, Qian Wang, Xinwei Wang, Gengqi Zheng, Feng Shang

{"title":"The Design of Miniature Frequency Reconfigurable Antenna Based on Inductive Loading Technology","authors":"Yuqiu Shang, Qingsheng Zeng, Qian Wang, Xinwei Wang, Gengqi Zheng, Feng Shang","doi":"10.1155/2023/2913342","DOIUrl":"10.1155/2023/2913342","url":null,"abstract":"<div>\u0000 <p>A circularly polarized (CP) and frequency reconfigurable microstrip antenna with loading inductive is presented in this paper. The designed antenna is comprised of a radiating patch, four short-circuited grounded metal posts, and four coupling branches. Each coupling branch has an end that is coupled to the shorted ground post and is also connected to the parasitic branches by means of a group of PIN diodes. By controlling the state of the PIN diodes connected to each parasitic branch, the working resonant frequency of the antenna can be changed. In order to further understand the mechanisms of operation of the antenna, the equivalent circuit model was built, and the circuit model of the antenna was analyzed, and this analysis was used for the development of the frequency reconfigurable microstrip patch antenna. Furthermore, the parameters of specific equivalent circuits can be solved by the three lengths of branch. Meanwhile, the calculated results derived from the given resonant frequency formula for the antenna are in good agreement with the simulation results of the antenna. Simulated results for the input impedance of the antenna are also in good agreement with the calculated values for the equivalent circuit. Finally, the antenna is fabricated and measured, and the measured results show that the antenna can not only achieve frequency reconfiguration at 1.14 GHz, 1.21 GHz, and 1.39 GHz but also accord well with the simulation value, while maintaining a compact size.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/2913342","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139242696","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

High-Temperature Measurement Technology for Microwave Surface Resistance of Metal Materials 金属材料微波表面电阻的高温测量技术

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-21 DOI: 10.1155/2023/9930037

Chunmao Xie, Yunpeng Zhang, Xue Niu, Ming Huang, Chong Gao, Chengyong Yu, Hu Zheng, En Li

{"title":"High-Temperature Measurement Technology for Microwave Surface Resistance of Metal Materials","authors":"Chunmao Xie, Yunpeng Zhang, Xue Niu, Ming Huang, Chong Gao, Chengyong Yu, Hu Zheng, En Li","doi":"10.1155/2023/9930037","DOIUrl":"10.1155/2023/9930037","url":null,"abstract":"<div>\u0000 <p>The resonant cavity method is a commonly used method for high-temperature testing of the complex permittivity of dielectric materials. When a resonant cavity is used for high-temperature testing, the microwave surface resistance of the cavity metal material will deteriorate due to factors such as oxidation reaction and thermal fatigue, resulting in a decrease in testing accuracy and repeatability. Therefore, when designing a high-temperature resonant cavity, the temperature response characteristics of the microwave surface resistance of the cavity metal material should be obtained in advance. In this paper, a high-temperature measurement method of microwave surface resistance of metal materials based on a separate cylindrical resonator is proposed, a mathematical model of microwave surface resistance inversion based on the resonator quality factor is established, and a high-temperature measurement system of microwave surface resistance is integrated. The reliability of the proposed method and system is verified through simulation and experiment. The measurement frequency covers 7-18 GHz, and the maximum test temperature reaches 500°C. Systematic error of microwave surface resistance measurement at room temperature is less than 3%.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2023 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/9930037","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139250634","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

Angular Stability Enhancement Using Phase Compensation Method for Frequency Selective Surface Design 利用相位补偿法增强频率选择性表面设计的角度稳定性

IF 0.9 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2023-11-15 DOI: 10.1155/2023/8880759

Yiwei Chen, Yang Yang, Xiaoxiang He, Xiaohui Yu, Wenwu Zhang

{"title":"Angular Stability Enhancement Using Phase Compensation Method for Frequency Selective Surface Design","authors":"Yiwei Chen, Yang Yang, Xiaoxiang He, Xiaohui Yu, Wenwu Zhang","doi":"10.1155/2023/8880759","DOIUrl":"10.1155/2023/8880759","url":null,"abstract":"<div>\u0000 <p>This study introduces a novel phase compensation-based, asymmetric frequency selective surface (FSS). Aimed at enhancing angular stability, the phase compensation method utilizes the reflected phase gradient changes generated by two FSSs at large grazing angles. The ultimate improvement in angular stability comes from unit amalgamation to achieve phase complementarity, effectively dealing with the phase shift of incident waves caused by large grazing angles. Based on this principle, the asymmetric FSS structure is built with 3 components: a Minkowski fractal cell, a bent-line square-loop cell, and a thin square-loop parasitic cell. Simulation results show the structure demonstrates a 0 relative shift of resonant frequency within an incidence range of 0-80° under transverse electric (TE) polarization. However, it exhibits a maximum relative shift of 5.12% in resonant frequency at an 80° incidence under transverse magnetic (TM) polarization. Compared with <i>E</i><sub>1</sub> and <i>E</i><sub>2</sub> units, this structure significantly reduces frequency deviation—by 100% at 80° incidence under TE polarization and by 80.12% and 83.26% compared with <i>E</i><sub>1</sub> and <i>E</i><sub>2</sub> units under TM polarization. Finally, the proposed FSS model was fabricated and processed, with measured data basically aligning with the simulated 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":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2023/8880759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139273006","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