IEEE Open Journal of Antennas and Propagation最新文献_第8页

Digitally Controlled Beam-Steerable Printed Dipole Antenna 数字控制波束导向印刷偶极子天线

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-13 DOI: 10.1109/OJAP.2025.3529019

Rajesh Shukla;Sandeep Kumar Yadav;Soumava Mukherjee

{"title":"Digitally Controlled Beam-Steerable Printed Dipole Antenna","authors":"Rajesh Shukla;Sandeep Kumar Yadav;Soumava Mukherjee","doi":"10.1109/OJAP.2025.3529019","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3529019","url":null,"abstract":"A digitally controlled beam steerable printed dipole antenna operating in ISM band has been proposed using PIN diodes switching mechanism. The proposed antenna provides effective solution of beam steering by establishing adequate coverage in elevation plane using a single dipole element. The beam steering of antenna has been digitally controlled by varying the effective length of one dipole arm by switching the PIN diodes integrated on it. For effective digitally controlled beam steering, the DC biasing voltage applied for switching PIN diodes is regulated by Pulse Width Modulation (PWM) signal generated from STM32F407VG microcontroller through RC filter. Biasing elements for antenna is intentionally placed on back side of substrate through via to minimize the effect on radiation pattern. Peak gain of proposed antenna is measured as 4.57 dB with cross polarisation below −20 dB and scan loss less than 0.8 dB. The proposed antenna is capable of steering beam up to 45 degrees in elevation plane having 120 MHz operational bandwidth. In order to establish wide range of applications, proposed antenna is designed and tested for 2.45 GHz ISM band. The proposed antenna operates with minimal design complexity, high portability, reduced manufacturing cost, easily integrated architecture, lower parasitic losses and less space constraints due to single dipole structure with microcontroller switched PIN diodes integrated on antenna itself.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"460-467"},"PeriodicalIF":3.5,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10839295","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis of Wide-Angle Scanning Arrays Through Array Power Control 通过阵列功率控制合成广角扫描阵列

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-13 DOI: 10.1109/OJAP.2025.3528232

Pietro Rosatti;Giacomo Oliveri;Andrea Massa

引用次数: 0

Near-Ground Propagation Channel Modeling and Analysis in Underground Mining Environment at 2.4 GHz 2.4 GHz 地下采矿环境中的近地传播信道建模与分析

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-08 DOI: 10.1109/OJAP.2025.3527334

Isam Eddine Lamri;Mourad Nedil;Mohamed Nasr Eddine Temmar;Nahi Kandil

{"title":"Near-Ground Propagation Channel Modeling and Analysis in Underground Mining Environment at 2.4 GHz","authors":"Isam Eddine Lamri;Mourad Nedil;Mohamed Nasr Eddine Temmar;Nahi Kandil","doi":"10.1109/OJAP.2025.3527334","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3527334","url":null,"abstract":"This paper presents a detailed measurement and performance analysis of near-ground propagation channels in an underground mine for both Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) scenarios. The analysis is derived from channel measurements conducted at a frequency of 2.4 GHz with a bandwidth of 200 MHz, utilizing four different combinations of transmitter-receiver (Tx-Rx) antenna heights ranging from 10 cm to 120 cm. Key channel characteristics such as large-scale path loss, time dispersion, and coherence bandwidth are reported and evaluated. The study suggests that a multi-slope (four-slope) path loss model is more effective in predicting path loss across various propagation segments in the mining environment. The path loss coefficient (n) and shadowing variance <inline-formula> <tex-math>$(sigma)$ </tex-math></inline-formula> show significant sensitivity to both the Tx-Rx distance and the heights of the Tx-Rx antennas, while the root mean square delay spread <inline-formula> <tex-math>$(tau _{mathrm { rms}})$ </tex-math></inline-formula> and coherence bandwidth (BC) are less affected by these variables. Moreover, distinct path loss patterns are observed for each combination of Tx-Rx antenna heights, resulting in varying signal attenuation levels. The identification of an optimal height for minimizing signal loss is thus required. These observations provide valuable and crucial insights into the near-ground propagation characteristics within the intricate and scattering-rich conditions of underground mines.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"445-459"},"PeriodicalIF":3.5,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10833690","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimal Frequencies for Wireless Power Transfer Through Biological Tissues 生物组织无线电力传输的最佳频率

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-06 DOI: 10.1109/OJAP.2025.3526414

Nam Ha-Van;Sergei A. Tretyakov;Constantin R. Simovski

{"title":"Optimal Frequencies for Wireless Power Transfer Through Biological Tissues","authors":"Nam Ha-Van;Sergei A. Tretyakov;Constantin R. Simovski","doi":"10.1109/OJAP.2025.3526414","DOIUrl":"https://doi.org/10.1109/OJAP.2025.3526414","url":null,"abstract":"Wireless power transfer (WPT) encounters challenges when the receiver is located in biological tissues, which are lossy and dispersive. Recent studies have paid significant attention to the mechanism of WPT in unbounded lossy media and between multiple media, such as at air-biological tissue interfaces. We present a comparative theoretical study of a basic WPT system for two cases: when both transmitting and receiving loops are inside a biological tissue (human body) and when the transmitting loop is outside while the received loop is inside. The study aims to find and compare optimal frequency ranges of WPT, distinguishing the regimes of maximal efficiency and maximal transferred power for both of these cases. We have found that the impact of the interface results in a significant increase in the frequencies that are optimal for the maximum power transfer efficiency: from dozens of MHz for a WPT system entirely located in the medium to the GHz range for a WPT system with the transmitting antenna in free space. Though the bands of the maximal efficiency and maximal power transfer never coincide, they overlap if the transmitting loop is in the air.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"433-444"},"PeriodicalIF":3.5,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10829641","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698099","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 Compact Shared-Aperture Antenna With 2-Transmit and 2-Receive Highly-Isolated Ports for Full-Duplex MIMO Systems 为全双工多输入多输出系统设计的带有 2 个发射和 2 个接收高隔离端口的紧凑型共用孔径天线

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2025-01-01 DOI: 10.1109/OJAP.2024.3524601

Junhui Rao;Zhaoyang Ming;Jichen Zhang;Zan Li;Chi-Yuk Chiu;Ross Murch

{"title":"A Compact Shared-Aperture Antenna With 2-Transmit and 2-Receive Highly-Isolated Ports for Full-Duplex MIMO Systems","authors":"Junhui Rao;Zhaoyang Ming;Jichen Zhang;Zan Li;Chi-Yuk Chiu;Ross Murch","doi":"10.1109/OJAP.2024.3524601","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3524601","url":null,"abstract":"In-band full-duplex (IBFD) antennas have been proposed for next-generation wireless communication as they can increase system throughput by up to two times. In this work, a compact multiple-input multiple-output (MIMO) IBFD antenna featuring two co-polarized transmit (Tx) ports and two co-polarized receive (Rx) ports is proposed that is suitable for use in mobile devices. The design is one of the first to include MIMO into IBFD antennas. The fabricated and measured proposed antenna exhibits over 32 dB self-interference (SI) isolation between Tx and Rx ports and less than −18.2 dB mutual-coupling (MC) within Tx and Rx pairs. All radiation patterns are in the broadside direction and it operates in the 2.5 GHz frequency band. A novel “inverted mushroom” (IMR) structure, composed of a metallic pillar fence connecting two layers of optimized metal tiles, is introduced at the antenna’s center to suppress the Tx ports MC and ensure effective radiation for Rx ports. Additionally, an analytical method is proposed to optimize the IMR for achieving the desired performance. To integrate all four ports within a single antenna aperture of <inline-formula> <tex-math>$0.38lambda times 0.38lambda times 0.11lambda $ </tex-math></inline-formula>, polarization-dependent “teeth-like” gaps are proposed to protect Tx ports from IMR influence while maintaining the normal operation of Rx ports. Moreover, differential feeding networks are designed to enhance the SI isolation between Tx and Rx ports.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"422-432"},"PeriodicalIF":3.5,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10819474","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698272","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

2024 Index IEEE Open Journal of Antennas and Propagation Vol. 5 天线与传播学报，第5卷

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-12-23 DOI: 10.1109/OJAP.2024.3520678

引用次数: 0

Pattern Compensation for Faulty Phased Array Antenna Based on Deep-Learning Technique 基于深度学习技术的故障相控阵天线模式补偿

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-12-23 DOI: 10.1109/OJAP.2024.3521950

Shu-Min Tsai;Ming-Tien Wu;Yu-Han Chen;Hong-Wei Yan;Ming-Lin Chuang

{"title":"Pattern Compensation for Faulty Phased Array Antenna Based on Deep-Learning Technique","authors":"Shu-Min Tsai;Ming-Tien Wu;Yu-Han Chen;Hong-Wei Yan;Ming-Lin Chuang","doi":"10.1109/OJAP.2024.3521950","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3521950","url":null,"abstract":"This study proposes an approach to compensate for pattern distortion in a phased array antenna caused by antenna element failures. The proposed approach utilizes a deep-learning network explicitly trained for a phased array antenna with damaged elements to generate the necessary excitation, producing a new pattern closely resembling the intact phased array antenna. Compared to alternative methods that focus on reducing side-lobe level, this compensation approach offers the advantages of rapid response and minimal computational overhead for the re-synthesis of the desired pattern that is close to the original pattern. This approach makes it particularly suitable for scenarios involving faulty phased array antennas, such as those on satellites or mountain-top antenna towers, where replacement or repair is not readily feasible in a short timeframe. This study demonstrates the pattern compensation for the two phased array antennas with damaged antenna elements. This work analyzes several randomly selected patterns and proposes quantitative indices to evaluate the performance of the approach. The proposed approach produced the compensating excitations of the remaining undamaged elements within 0.1 sec after inputting the desired pattern. The simulated results indicate that the proposed method effectively reduces pattern distortion resulting from antenna element failures and thus regenerates an optimal pattern as close as possible to the original one.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"414-421"},"PeriodicalIF":3.5,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10812994","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","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 High Selectivity Patch Antenna Under Triple-Mode Resonance via Loading Symmetrical Slots 负载对称槽三模谐振下的紧凑型高选择性贴片天线

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-12-19 DOI: 10.1109/OJAP.2024.3520502

Mingli Sun;Qianwen Liu;Lei Zhu

{"title":"Compact High Selectivity Patch Antenna Under Triple-Mode Resonance via Loading Symmetrical Slots","authors":"Mingli Sun;Qianwen Liu;Lei Zhu","doi":"10.1109/OJAP.2024.3520502","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3520502","url":null,"abstract":"In this article, a compact filtering patch antenna on a single-layer substrate under triplemode resonance is proposed by loading two pairs of stepped slots. Initially, four straight slots are symmetrically etched along the radiation edges of a square patch radiator to reshape the radiation and resonant properties of its two higher-order TM02 and TM12 modes for bandwidth enhancement when maintaining the performances of the fundamental TM10 mode unchanged. Owing to the specific field distributions of the reshaped TM02 and TM12 modes, two radiation nulls can be produced nearby. In order to move the radiation nulls outside the desired passband for highly-sharpened wideband filtering radiation, the straight slots are then properly modified with their stepped ones in configuration. In this context, this proposed single patch antenna not only achieves a wide bandwidth under operation of three reshaped TM02, TM10, and TM12 modes, but also attains good frequency selectivity with the help of two out-of-band radiation nulls. For evident demonstration, the proposed antenna prototype is designed, fabricated and measured. Good agreement between the simulated and measured results, including frequency responses of reflection coefficient and radiation gain, is observed. Compared with other reported patch antennas, the proposed antenna not only holds simple layout and compact size in configuration, but also realizes a wideband filtering radiation performance with high frequency selectivity by virtue of excitation and operation of three resonant modes in a single patch radiator.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"405-413"},"PeriodicalIF":3.5,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10808170","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

AMC-Based Miniaturized Waveguide With Reconfigurable Pass-Bands Below Cut-Off Frequency and Quasi-TEM Mode 基于 AMC 的微型波导，具有低于截止频率的可重构通带和准 TEM 模式

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-12-18 DOI: 10.1109/OJAP.2024.3506921

Vikrant Singh;Maryam Khodadadi;Mohsen Khalily;Rahim Tafazolli;Ahmed A. Kishk

{"title":"AMC-Based Miniaturized Waveguide With Reconfigurable Pass-Bands Below Cut-Off Frequency and Quasi-TEM Mode","authors":"Vikrant Singh;Maryam Khodadadi;Mohsen Khalily;Rahim Tafazolli;Ahmed A. Kishk","doi":"10.1109/OJAP.2024.3506921","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3506921","url":null,"abstract":"This work introduces an innovative miniaturized transverse electromagnetic (TEM) waveguide design, which is 60% smaller than conventional metal waveguides. The proposed waveguide offers two distinct electronically reconfigurable passbands well below the cutoff frequency. This has been achieved by using sidewalls composed of reconfigurable artificial magnetic conductors (AMC), optimized to operate at 3.51 GHz and 4.37 GHz. By replacing the metal sidewalls with an AMC structure, a TEM mode can be sustained within the confined space enclosed by the waveguide structure, which otherwise would not exist in a conventional metal waveguide. This eliminates typical cut-off frequency constraints that limit the size of conventional waveguides, thereby enabling a significant miniaturization of the waveguide design. The work also proposes a reconfigurable AMC design whose operating frequency can be dynamically adjusted by applying or removing a direct current (DC) bias across the integrated PIN diodes. Additionally, this work utilizes 3D printing technology to fabricate a functional waveguide, highlighting the design’s compactness, cost-effectiveness, versatility, and fast prototyping capabilities for a wide range of microwave applications. This study therefore demonstrates the potential of using reconfigurable AMCs for compact and versatile waveguide designs that can be 3D-printed for various practical use cases and modern microwave applications.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"393-404"},"PeriodicalIF":3.5,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10806758","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluid Brilliance: Expanding the Horizons in MIMO Diversity Using Liquid Antenna 流体辉煌：利用液体天线拓展MIMO分集的视野

IF 3.5

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-12-17 DOI: 10.1109/OJAP.2024.3519332

Viswanadh Raviteja Gudivada;Yi Huang

{"title":"Fluid Brilliance: Expanding the Horizons in MIMO Diversity Using Liquid Antenna","authors":"Viswanadh Raviteja Gudivada;Yi Huang","doi":"10.1109/OJAP.2024.3519332","DOIUrl":"https://doi.org/10.1109/OJAP.2024.3519332","url":null,"abstract":"A six-port liquid dielectric resonator antenna designed to enhance diversity for Wi-Fi applications operating at 2.45 GHz, leveraging the fluidic properties of liquids is presented. The proposed design incorporates both conventional and modified intrusive feeding mechanisms, specifically utilizing extended copper lines with vertical dielectric wall support. This arrangement is aimed at realizing six pattern and polarization-independent TM<inline-formula> <tex-math>$_{0}2delta {+}1 $ </tex-math></inline-formula>, HEM<inline-formula> <tex-math>${^{text {y}}} {_{2}1delta {+}1 }$ </tex-math></inline-formula>, HEM<inline-formula> <tex-math>$1{_{2}2delta }$ </tex-math></inline-formula>, HEM<inline-formula> <tex-math>$2{_{2}2delta }$ </tex-math></inline-formula>, HEM<inline-formula> <tex-math>${^{text {x}}} {_{2}1delta {+}1 }$ </tex-math></inline-formula>, and HEM<inline-formula> <tex-math>${^{text {y}}} {_{1}2delta {+}1 }$ </tex-math></inline-formula> higher-order modes belonging to the TM and HEM mode family. The liquid antenna demonstrates favorable MIMO characteristics and satisfactory far-field behavior, all within a compact profile of less than <inline-formula> <tex-math>$0.24lambda $ </tex-math></inline-formula>o. A working prototype is designed and tested with good agreement between the simulated and the measured results.","PeriodicalId":34267,"journal":{"name":"IEEE Open Journal of Antennas and Propagation","volume":"6 2","pages":"383-392"},"PeriodicalIF":3.5,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10804619","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143698171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0