International Journal of RF and Microwave Computer-Aided Engineering最新文献_第6页

A Multifunctionality Reconfigurable HMSIW Filter by Using EBG Structure and Diodes for C/X-Band Application 利用 EBG 结构和二极管为 C/X 波段应用设计多功能可重构 HMSIW 滤波器

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-04-02 DOI: 10.1155/2024/9940203

Kioumars Pedram, Sanghoon Sim

{"title":"A Multifunctionality Reconfigurable HMSIW Filter by Using EBG Structure and Diodes for C/X-Band Application","authors":"Kioumars Pedram, Sanghoon Sim","doi":"10.1155/2024/9940203","DOIUrl":"https://doi.org/10.1155/2024/9940203","url":null,"abstract":"<div>\u0000 <p>This letter presents a multifunctionality reconfigurable substrate-integrated waveguide (SIW) filter embedded in a microstrip line. The proposed filter used an electromagnetic bandgap structure (EBG) to compact the size and improve the electromagnetic features. The SIW filter consists of a three-cell EBG with metallic circular-shaped connected to the ground through cylindrical vias. Firstly, the base SIW structure offers a wide passband filtering response, and then, to obtain selective passband, wide band rejection, and controllable resonance frequencies, a three-cell EBG along with four diodes has been attached. The filter is designed and printed on a Rogers 4003 substrate with a thickness of 1 mm and is experimentally validated for functionalities operated at three modes with an average 3 dB bandwidth of 115 MHz in each frequency. In addition to that, two transmission zeros (TZ) have been produced in the upper band frequency. The filter’s response is also tunable by turning the diode off or on and changing the main parameters of EBG, the gab, and the position between cells. The study explores resonance frequency alterations in a three-state system of on/off. By eliminating or diminishing specific modes, and incorporating diodes, distinct resonance behaviors are observed. Moreover, shifting frequency resonance in a multiparameter system has been investigated. Increasing <i>B1</i> induces a significant shift to lower values, while an increase in <i>D1</i> leads to a decrease in the first and second resonance frequencies and an upward shift in the third. The designed filter has been fabricated and tested to compare and confirm simulated responses. Simulation and measurement results are in good agreement. The S-parameters of measured results gained a good response (>15 dB) within the passbands and stopbands and an insertion loss of 1.5 dB suitable for 5G and Wi-Fi systems.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/9940203","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141182144","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 Collaborative Control Method of Transmission Amplitude and Phase for Transmitarray Antenna Design 用于发射阵列天线设计的发射振幅和相位协同控制方法

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-03-25 DOI: 10.1155/2024/6300533

Dawei Ding, Junfeng Chen, Guang Li, Hailin Hong

{"title":"A Collaborative Control Method of Transmission Amplitude and Phase for Transmitarray Antenna Design","authors":"Dawei Ding, Junfeng Chen, Guang Li, Hailin Hong","doi":"10.1155/2024/6300533","DOIUrl":"https://doi.org/10.1155/2024/6300533","url":null,"abstract":"<div>\u0000 <p>In this paper, a collaborative control method of transmission amplitude and phase for transmitarray antenna (TA) design is proposed. In this proposed method, one of the most popular hypersurface fitting models, Gaussian stochastic process (GP) model, is utilized to construct an accurate surrogate model. Following this implementation, a mapping relationship between structural parameters of TA unit cell and its transmission amplitude and phase is established. The most advantage of this method is its applicability for general TA designs because it is much difficult to control the amplitude and phase of unit cell independently through adjusting separate structural parameters. To verify the high efficiency of the proposed method, three TA antennas with different scanning angles are designed to obtain high sidelobe suppression level. Measured results show that the proposed collaborative control method of amplitude and phase is much promising for high sidelobe suppression level in TA designs.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/6300533","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141182211","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 Simultaneously Transmit and Receive Antenna Terminal for In-Band Full-Duplex Applications 用于带内全双工应用的同时发射和接收天线终端

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-03-25 DOI: 10.1155/2024/6618418

Meenal, Amalendu Patnaik

{"title":"A Simultaneously Transmit and Receive Antenna Terminal for In-Band Full-Duplex Applications","authors":"Meenal, Amalendu Patnaik","doi":"10.1155/2024/6618418","DOIUrl":"10.1155/2024/6618418","url":null,"abstract":"<div>\u0000 <p>In this paper, a low-profile co-linearly polarized simultaneously transmit-receive antenna (STRA) terminal is presented for 5G and upcoming technologies. The proposed STRA terminal comprises of an identical pair of spatially rotated half-circular microstrip antennas for transmission (Tx) and reception (Rx). The challenge of self-interference (SI) is addressed by employing passive SI cancellation techniques such as spatial diversity, field confinement, and surface perturbations. This has been accomplished by using fence-strip structure and V-shaped slots in the ground plane. The STRA was designed, fabricated, and tested for full-duplex operation in a sub-6 GHz band lying from 5.73 to 5.88 GHz, providing high interport isolation ranging from 35.5 dB to a maximum of 46.5 dB. The proposed STRA was implemented using Rogers 3003™ substrate. The measurements yield radiation characteristics with high gain of 5.45-6.0 dBi and 5-6.5 dBi for Tx and Rx antennas, respectively. The measured results are in good conformance with the simulated design. This antenna finds its potential usage in V2X and private 5G networks and can be extended for full-duplex MIMO implementations.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/6618418","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140383779","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 Dual-Band Low SAR Microstrip Patch Antenna with Jean Substrate for WBAN Applications 一种用于 WBAN 应用的双频低 SAR 微带贴片天线（带 Jean 基底面

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-03-23 DOI: 10.1155/2024/5076232

Wanwisa Thaiwirot, Yotrawee Hengroemyat, Thamonwan Kaewthai, Prayoot Akkaraekthalin, Suramate Chalermwisutkul

{"title":"A Dual-Band Low SAR Microstrip Patch Antenna with Jean Substrate for WBAN Applications","authors":"Wanwisa Thaiwirot, Yotrawee Hengroemyat, Thamonwan Kaewthai, Prayoot Akkaraekthalin, Suramate Chalermwisutkul","doi":"10.1155/2024/5076232","DOIUrl":"10.1155/2024/5076232","url":null,"abstract":"<div>\u0000 <p>This paper presents a low-profile dual-band microstrip patch antenna operated at the 2.45/5.8 GHz ISM bands, targeting wireless body area network (WBAN) applications. The proposed antenna is fabricated on a jean substrate measuring 74 × 82 mm<sup>2</sup>. The four corners of the conventional rectangular patch are cut to activate an additional operating frequency and to enhance the radiation pattern. The circular slot is added to the radiating patch to fine-tune the desired frequencies. The measured impedance bandwidth of the proposed antenna at 2.45 GHz and 5.8 GHz bands is 3.68% (2.40 GHz–2.49 GHz) and 3.81% (5.67 GHz–5.89 GHz), respectively. The measured maximum gains are 3.08 dBi at 2.45 GHz and 2.15 dBi at 5.8 GHz. Moreover, the antenna’s performance when placed on flat and rounded body surfaces is also investigated. The proposed antenna achieves stable radiation pattern and low specific absorption rate (SAR) value with low complexity in design. The results indicate that the proposed antenna can be a promising candidate for WBAN 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":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/5076232","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140210577","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

Optimally Matched 189-232 GHz 6.8 dBm Output Power CMOS Frequency Doubler 最佳匹配 189-232 GHz 6.8 dBm 输出功率 CMOS 倍频器

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-03-12 DOI: 10.1155/2024/9979639

Ruibing Dong, Shinsuke Hara, Mohamed H. Mubarak, Satoru Tanoi, Tatsuo Hagino, Issei Watanabe, Akifumi Kasamatsu

引用次数: 0

Analysis and Design of a High Gain Multiband Antenna Based on Metamaterials for RFID Applications 基于超材料的射频识别应用高增益多频带天线的分析与设计

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-03-05 DOI: 10.1155/2024/8948916

Mahdi Abdelkarim, Ali Gharsallah, Rihab Faouel

{"title":"Analysis and Design of a High Gain Multiband Antenna Based on Metamaterials for RFID Applications","authors":"Mahdi Abdelkarim, Ali Gharsallah, Rihab Faouel","doi":"10.1155/2024/8948916","DOIUrl":"10.1155/2024/8948916","url":null,"abstract":"<div>\u0000 <p>In this research work, the design of a dipole antenna based on metamaterials is proposed, which can be used as a high gain multiband communication device for RFID applications. This antenna is printed on two sides of an Arlon substrate, which has an overall electrical dimension of 0.39 <i>λ</i><sub>0</sub> × 0.11 <i>λ</i><sub>0</sub> × 0.0014 <i>λ</i><sub>0</sub>. The metamaterials are used to obtain a multiband antenna, and their integration technique into the antenna results in a high gain compared to a conventional antenna without any magnification or additional layer. The simulated and measured results show that the proposed antenna can operate at 0.88-0.97 GHz, 2.41-2.48 GHz, and 5.77-5.91 GHz with a reflection coefficient of less than −10 dB, which make it well suited for RFID at 860-960 MHz and 2.4 GHz/5.8 GHz. All these resonant frequencies show better impedance matching with high gain. The proposed antenna has the advantages of simple design, low profile, easy feeding, low manufacturing cost, and easy integration into the electronic circuit.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8948916","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140078965","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 Lumped-Element Directional Coupler for Bandwidth Enhancement, Impedance Matching, and Harmonic Suppressions 用于带宽增强、阻抗匹配和谐波抑制的集块元件定向耦合器

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-02-22 DOI: 10.1155/2024/6662753

Murong Zhuo

引用次数: 0

Implanted Rhombus Ring Partial Inset-Fed Circularly Polarized Microstrip Monopole Antenna for WBAN Applications 用于 WBAN 应用的植入式菱形环部分内嵌馈电圆极化微带单极天线

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-02-15 DOI: 10.1155/2024/2555206

Mohamed Njianga Yende, Ghanshyam Singh, Guy Ayissi Eyebe, Clement Mbinack, Joseph Mebara Mbida

{"title":"Implanted Rhombus Ring Partial Inset-Fed Circularly Polarized Microstrip Monopole Antenna for WBAN Applications","authors":"Mohamed Njianga Yende, Ghanshyam Singh, Guy Ayissi Eyebe, Clement Mbinack, Joseph Mebara Mbida","doi":"10.1155/2024/2555206","DOIUrl":"10.1155/2024/2555206","url":null,"abstract":"<div>\u0000 <p>In the present article, a design approach to accomplish circular polarization-based rhombus ring microstrip-fed monopole antenna working at 5.8 GHz for wireless body area network (WBAN) applications is proposed. The input impedance calculation using an electromagnetic theory of transmission line in a travelling wave coupled to the parallel-plate inductor model is conducted. Radiated electric field pattern calculation of the conventional square ring microstrip patch antenna (MSPA) using Biot and Savart’s law is reported. The circular polarization of the proposed antenna is accomplished by loading the radiating path with a capacitive element sectioned in the neighbourhood of the feed line. The proposed planar monopole antenna of volume 0.38<i>λ</i><sub>0</sub> × 0.38<i>λ</i><sub>0</sub> × 0.029<i>λ</i><sub>0</sub> (<i>λ</i><sub>0</sub> is evaluated at the resonant frequency of 5.8 GHz) achieves a -10 dB impedance bandwidth of 86.20% in the band (3-8 GHz) with a stable real gain of 8.29 dBic in circular polarization at the resonant frequency of 5.8 GHz and axial ration bandwidth of about 32.75% in the (5-6.9 GHz) band. Specific absorption rate (SAR) evaluation of the studied antenna is computed numerically on a part of the human phantom model to justify its use in WBAN applications. It is noted that the maximum amount of radiation absorbed by a part of the human phantom model is limited to a maximum SAR value of 1.45 W/kg and 0.754 W/kg on 1 g and 10 g of tissue mass, respectively. The prospective design has been fabricated and tested, and the experimental results are in good agreement with the simulation outcomes.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/2555206","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139833765","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

Simple Integration of Cavity-Backed Antenna with Patch Antenna for Developing Hybrid Antenna Using SIW Technology 利用 SIW 技术将腔背天线与贴片天线简单集成以开发混合天线

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-02-06 DOI: 10.1155/2024/9040638

A. H. Murshed, M. A. Hossain, N. K. Kiem, N. H. Hai, E. Nishiyama, I. Toyoda, I. Mahbub

{"title":"Simple Integration of Cavity-Backed Antenna with Patch Antenna for Developing Hybrid Antenna Using SIW Technology","authors":"A. H. Murshed, M. A. Hossain, N. K. Kiem, N. H. Hai, E. Nishiyama, I. Toyoda, I. Mahbub","doi":"10.1155/2024/9040638","DOIUrl":"10.1155/2024/9040638","url":null,"abstract":"<div>\u0000 <p>This paper proposes a novel scheme for developing a linearly polarized (LP) hybrid antenna using a simple integration of a planner cavity-backed antenna with a conventional rectangular patch antenna. To substantiate, a half-mode rectangular substrate-integrated waveguide technique is divided into halves to reduce the size and later integrated with a patch antenna. The patch antenna is getting excited by the mutual coupling of TE<sub>101</sub> mode and resonating in the vicinity of the cavity resonator. These two different combinations of strategy let the antenna obtain superior characteristics such as bandwidth and gain. To make this structure enable to use in the planner circuit, a 50 <i>Ω</i> microstrip line is incorporated. This proposed hybrid antenna is simulated and tested experimentally to justify its worthiness. The simulated and measured data maintained good agreements regarding <i>S</i><sub>11</sub>, bandwidth, gain, radiation pattern, and efficiency.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/9040638","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139858809","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

Wideband 4 × 4 Nolen Matrix with 360° Continuously Tuned Differential Phase and Low In-Band Phase Deviation Error 宽带 4×4 Nolen 矩阵，360° 连续调谐差分相位，带内相位偏差误差小

IF 1.7 4区工程技术

International Journal of RF and Microwave Computer-Aided Engineering Pub Date : 2024-01-27 DOI: 10.1155/2024/8835630

Da Yu, Hongmei Liu, Yan Zhang, Zhongbao Wang, Shaojun Fang

{"title":"Wideband 4 × 4 Nolen Matrix with 360° Continuously Tuned Differential Phase and Low In-Band Phase Deviation Error","authors":"Da Yu, Hongmei Liu, Yan Zhang, Zhongbao Wang, Shaojun Fang","doi":"10.1155/2024/8835630","DOIUrl":"10.1155/2024/8835630","url":null,"abstract":"<div>\u0000 <p>In the paper, a wideband tunable 4 × 4 Nolen matrix is proposed. By using the presented topology of the Nolen matrix, tunable output port phase differences can be realized by inserting one type of tunable phase shifters (T-PS). Besides, the in-band phase deviation error is minimized by adding compensation phase shifters (C-PSs) to the output ports of the Nolen matrix. Analytical design methods based on signal flow graphs and complex exponential signal are given to obtain the rigorous relationships of the coupling and phase shifts in the Nolen matrix. Besides, a detailed method for output ports phase slope compensation is provided. For validation, a prototype centered at 5.8 GHz is designed and fabricated. Measurement results agree well with the simulated ones. By using only one voltage to control the phase shifts of the T-PS in a 90° range for each input excitation of the Nolen matrix, a full 360° range of the progressive phase difference is realized by switching four input ports. The measured fractional bandwidth under 10 dB return loss and isolation is larger than 24.5% with the in − band ± 1.5 dB amplitude imbalance and ±15° phase deviation error for ports 1-4 excitations. Besides, for a more strict criterion of ±1 dB amplitude imbalance and 10° phase deviation error, the measured bandwidths are larger than 15% for all port excitations.</p>\u0000 </div>","PeriodicalId":54944,"journal":{"name":"International Journal of RF and Microwave Computer-Aided Engineering","volume":"2024 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/2024/8835630","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140492272","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