International Journal of Microwave and Wireless Technologies最新文献_第3页

A compact UWB MIMO antenna augmented with isolation improvement structures in situ with ground stubs and slots 一种紧凑型 UWB 多输入多输出天线，在原位增加了隔离改进结构和接地桩与槽

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-04-05 DOI: 10.1017/s1759078723001150

Jeet Banerjee, Abhik Gorai, Rowdra Ghatak

{"title":"A compact UWB MIMO antenna augmented with isolation improvement structures in situ with ground stubs and slots","authors":"Jeet Banerjee, Abhik Gorai, Rowdra Ghatak","doi":"10.1017/s1759078723001150","DOIUrl":"https://doi.org/10.1017/s1759078723001150","url":null,"abstract":"An orthogonally oriented microstrip-fed bi-element ultra-wideband (UWB) diversity antenna possessing a super-wide bandwidth, high isolation, and band rejection attributes is proposed. The intended diversity antenna uses a 2nd-order Cayley fractal tree-shaped neutralization line among a pair of radiating square monopoles along with additional components like extended ground stubs, hybrid Koch fractal parasitic elements, and an L-shaped defected ground structure to attain high isolation of <−20 dB over 3.1–18 GHz. To nullify the intervention from the existent wireless local area network band, a hybrid Koch–Minkowski slot is carved out from the radiators. A minimal inter-element spacing of 8 mm is attained with the suggested layout measuring 28 mm (L) × 42 mm (W) in extent. The numerical as well as experimental investigations of vital diversity attributes like the envelope correlation coefficient, mean effective gain, total active reflection coefficient, and multiplexing efficiency depict high diversity actualization. The consistency amidst the simulation as well as the empirical results recommends the worthiness of the intended antenna for handy UWB and UWB multiple-input multiple-output systems.","PeriodicalId":49052,"journal":{"name":"International Journal of Microwave and Wireless Technologies","volume":"52 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140577234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bandpass filter with multiple selective absorptive stopbands for 28 GHz transmitters 用于 28 千兆赫发射机的带多个选择性吸收阻带的带通滤波器

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-04-05 DOI: 10.1017/s1759078724000394

Stefano Moscato, Steven Caicedo, Matteo Oldoni

引用次数: 0

Bioinspired planar switched beam network using Butler matrix on a flexible substrate targeting multifaceted millimeter-wave applications 在柔性基底上使用巴特勒矩阵的生物启发平面开关波束网络，瞄准毫米波的多方面应用

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-04-02 DOI: 10.1017/s1759078724000400

Balaka Biswas, Ayan Karmakar

{"title":"Bioinspired planar switched beam network using Butler matrix on a flexible substrate targeting multifaceted millimeter-wave applications","authors":"Balaka Biswas, Ayan Karmakar","doi":"10.1017/s1759078724000400","DOIUrl":"https://doi.org/10.1017/s1759078724000400","url":null,"abstract":"This paper details the design and development of a planar switched beam network using 4 × 4 Butler matrix (BM) over a thin and flexible type biocompatible substrate. Four mils thick liquid crystal polymer (LCP) is used as a substrate here (ϵr = 2.92, tanδ = 0.002). The proposed design is centered at 28 GHz, targeting commercial millimeter-wave applications. Floral-shaped antenna with defective ground structures has been implemented as basic radiating elements. The whole structure is based on microstrip line configuration. The architecture occupies an area of 23.85 × 19.20 mm2 over the LCP substrate. Individual components of the BM are detailed here, followed by a system analysis of the whole integrated structure. The present work also covers the electrical equivalent circuit modeling of the whole beam-forming network. The fabricated prototype offers better than 18 dB return losses at each input port for the desired frequency band with 6 dBi (max.) peak gain and 500 MHz bandwidth around the center frequency. Port-to-port isolation of better than 15 dB is achieved with this topology. Experimental and simulated results are in good agreement in all aspects. A comparative study is also chalked out to highlight the significance of the current research work with respect to alike earlier reported structures.","PeriodicalId":49052,"journal":{"name":"International Journal of Microwave and Wireless Technologies","volume":"15 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140576725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Joint multitemporal SAR and optical mapping of urban changes 多时合成孔径雷达和光学联合绘制城市变化图

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-22 DOI: 10.1017/s175907872400031x

David Marzi, Erith Munoz Rios, Antonietta Sorriso, Fabio Dell’Acqua, Paolo Gamba

引用次数: 0

An applicator for high-power rock comminution using microwave technology in the megawatt range 使用兆瓦级微波技术的大功率岩石粉碎应用器

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-21 DOI: 10.1017/s1759078724000308

Yasin Alekajbaf, Dragos Dancila

{"title":"An applicator for high-power rock comminution using microwave technology in the megawatt range","authors":"Yasin Alekajbaf, Dragos Dancila","doi":"10.1017/s1759078724000308","DOIUrl":"https://doi.org/10.1017/s1759078724000308","url":null,"abstract":"The mining industry is heavily dependent on energy-intensive processes, such as rock breakage, which leads to significant operational costs. This paper explores microwave-assisted rock breakage as an innovative method to enhance the efficiency of comminution within the mining industry. It introduces a system that employs a Klystron microwave power source with a maximum output of 7.5 MW, using a $mathrm{TM}_{010}$ single-mode cavity at 3 GHz, to channel energy inside a specially designed rock cavity. The paper emphasizes the importance of designing an efficient microwave cavity for this system, focusing on the cavity’s design and simulation. Through both simulated results (using HFSS software) and experimental observations, the study reveals the promising application of microwave technology in the field of mining. The simulated frequency response of the designed cavity (S11) is −22 dB, it demonstrates significant potential for reducing both energy consumption and associated costs. Additionally, the designed cavity is fabricated from aluminum and filled with polyether ether ketone material. The measured frequency response (S11) of the cavity at 3 GHz is −17 dB.","PeriodicalId":49052,"journal":{"name":"International Journal of Microwave and Wireless Technologies","volume":"72 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140197834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An acceleration method employing sparse sensing matrix for fast analysis of the wide-angle electromagnetic problems based on compressive sensing 利用稀疏传感矩阵的加速方法，快速分析基于压缩传感的广角电磁问题

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-18 DOI: 10.1017/s1759078724000291

Qi Qi, Xinyuan Cao, Yi Liu, Meng Kong, Xiaojing Kuang, Mingsheng Chen

引用次数: 0

Dual-port circularly polarized dielectric resonator–based antenna with reconfigurable integrated multifunctional filter for 5G cognitive radio applications 基于介质谐振器的双端口圆极化天线与可重构集成多功能滤波器，适用于 5G 认知无线电应用

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-08 DOI: 10.1017/s175907872400028x

Yajush Rai, Deepak Sigroha, Krishna Tyagi, Gourab Das, Anand Sharma

{"title":"Dual-port circularly polarized dielectric resonator–based antenna with reconfigurable integrated multifunctional filter for 5G cognitive radio applications","authors":"Yajush Rai, Deepak Sigroha, Krishna Tyagi, Gourab Das, Anand Sharma","doi":"10.1017/s175907872400028x","DOIUrl":"https://doi.org/10.1017/s175907872400028x","url":null,"abstract":"In this paper, the design of a circularly polarized (CP) multiple-input–multiple-output (MIMO) antenna system is presented, utilizing a dielectric resonator (DR). This presented antenna system is subsequently integrated with a multifunctional filter, all meticulously structured on a single substrate. The multifunctional filter operates in three modes: reconfigurable band-pass and band-reject filter as well as all-pass filter. The overall structure works as a tunable filtenna. The designed filtenna is expanded into a two-port MIMO system on a unified substrate, providing strong port isolation below −28.5 dB. The overall dimension of proposed radiator is 180 × 180 × 1.6 mm3. The value of peak gain is 5.19 dBic. By switching the states of PIN diodes, the designed filtenna operates as a sensing and communicating antenna for interweave and underlay cognitive radios (CRs). The proposed antenna supports the CP waves within the working band, i.e., 3.6–4.5 GHz. The simulated results are validated by comparing them with the measured results showing less variation among them. MIMO parameters, including the envelope correlation coefficient and diversity gain, have been calculated for the proposed filtenna, representing its suitability for 5G-CR applications.","PeriodicalId":49052,"journal":{"name":"International Journal of Microwave and Wireless Technologies","volume":"97 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140070422","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable microstrip bandpass filter with constant absolute bandwidth using BST varactors and digitally tunable capacitors 利用 BST 变容器和数字可调电容器实现绝对带宽恒定的可调微带带通滤波器

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-08 DOI: 10.1017/s1759078724000278

Manoj Kumar, Gowrish Basavarajappa

引用次数: 0

Broadband packaging solution in embedded wafer level ball grid array technology for D-band PMCW radar 用于 D 波段 PMCW 雷达的嵌入式晶圆级球栅阵列技术的宽带封装解决方案

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-07 DOI: 10.1017/s1759078724000266

Elizabeth Bekker, Georg Gramlich, Luca Valenziano, Lucas Giroto de Oliveira, Theresa Antes, Thomas Zwick, Akanksha Bhutani

{"title":"Broadband packaging solution in embedded wafer level ball grid array technology for D-band PMCW radar","authors":"Elizabeth Bekker, Georg Gramlich, Luca Valenziano, Lucas Giroto de Oliveira, Theresa Antes, Thomas Zwick, Akanksha Bhutani","doi":"10.1017/s1759078724000266","DOIUrl":"https://doi.org/10.1017/s1759078724000266","url":null,"abstract":"A system-in-package for a wideband digital radar, in D-band, requires broadband, high-gain antennas combined with broadband chip-to-package and package-to-printed circuit board (PCB) interconnects. This paper demonstrates a wideband, low-loss quasi-coaxial signal transition, and a novel electric split ring resonator (eSRR)-based antenna-in-package (AiP) with a modified reflector concept, for improved gain, in embedded wafer level ball grid array (eWLB) technology. A complete chip-to-package-to-PCB interconnect is also demonstrated by combining the quasi-coaxial transition with a chip-to-package interconnect. The quasi-coaxial signal transition has the largest impedance bandwidth among ball grid array-based quasi-coaxial signal transitions. For the modified reflector concept, a horn-shaped cavity is micromachined in the PCB substrate and remetallized with aerosol-jet printing, placing the reflector 0.25λ from the antenna. The antenna gain is improved with up to 5.3 dB. The AiP with the horn-shaped reflector is the single element with the highest gain, in eWLB technology, above 100 GHz.","PeriodicalId":49052,"journal":{"name":"International Journal of Microwave and Wireless Technologies","volume":"129 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140056977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Combining 77–81 GHz MIMO FMCW radar with frequency-steered antennas: a case study for 3D target localization 将 77-81 GHz MIMO FMCW 雷达与分频天线相结合：三维目标定位案例研究

IF 1.4 4区计算机科学

International Journal of Microwave and Wireless Technologies Pub Date : 2024-03-07 DOI: 10.1017/s1759078724000254

Patrick Kwiatkowski, Alexander Orth, Nils Pohl

{"title":"Combining 77–81 GHz MIMO FMCW radar with frequency-steered antennas: a case study for 3D target localization","authors":"Patrick Kwiatkowski, Alexander Orth, Nils Pohl","doi":"10.1017/s1759078724000254","DOIUrl":"https://doi.org/10.1017/s1759078724000254","url":null,"abstract":"In this paper, we introduce a compact 6 × 8 channel multiple-input multiple-output frequency-modulated continuous-wave radar system capable of determining the three-dimensional positions of targets despite utilizing a linear virtual array. The compact system, containing two cascaded radar transceiver ICs, has 48 virtual channels. We conduct a direction of arrival estimation with these virtual channels to determine the azimuth angle. To overcome the spatial limitation of the linear array, we use frequency-steered transmit antennas, which vary their main lobe direction during the frequency chirp, allowing the elevation angle to be determined by using a sliding window fast Fourier transform algorithm. In this study, we present the system’s concept along with the associated signal processing. By taking measurements in different scenarios, each with differently placed corner reflectors, we investigate the capability of the system to separate adjacent targets concerning range, azimuth, and elevation. These measurements are additionally employed to point out the design trade-offs inherent to the system.","PeriodicalId":49052,"journal":{"name":"International Journal of Microwave and Wireless Technologies","volume":"4 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140056379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0