Frequenz最新文献_第6页

A novel slotted dumbbell-shaped dielectric resonator antenna with enhanced bandwidth for C-band and 5G sub-6 GHz applications 一种新型开槽哑铃形介质谐振器天线，具有增强带宽，适用于c波段和5G sub- 6ghz应用

4区工程技术

Frequenz Pub Date : 2023-10-31 DOI: 10.1515/freq-2023-0014

Ravi Chandra, Dileep Kumar Upadhyay

{"title":"A novel slotted dumbbell-shaped dielectric resonator antenna with enhanced bandwidth for C-band and 5G sub-6 GHz applications","authors":"Ravi Chandra, Dileep Kumar Upadhyay","doi":"10.1515/freq-2023-0014","DOIUrl":"https://doi.org/10.1515/freq-2023-0014","url":null,"abstract":"Abstract This manuscript presents a novel aperture-coupled fed slotted dumbbell-shaped (SDS) dielectric resonator antenna (DRA) with enhanced bandwidth for 5G sub-6 GHz, short-range wireless communications, and C-band applications. The DRA is excited by HEM 11 δ mode. The proposed SDS-DRA is designed by assembling the four frustums of conical DRAs with the base and apex of one on top of another. The measured operating frequency of SDS-DRA is from 3.5 GHz to 9.6 GHz (impedance bandwidth of 93.1 %). The SDS-DRA shows a peak gain of 9.7 dBi in the operational frequency range, with an average peak gain of 6.02 dBi. The antenna’s average radiation efficiency is found to be 84.6 %. The proposed SDS-DRA produces omnidirectional-like radiation patterns with significantly low cross-polarization in the broadside direction. The size ( l × w × h ) of the proposed SDS-DRA is 1.55 λ g × 1.55 λ g × 0.67 λ g where, λ g is the guided wavelength in mm at 3.5 GHz for effective permittivity ( ϵ eff ), 7.1. To validate the simulation results, the proposed antenna structure is built, and its performance is measured. The findings of simulation and measurement results are found to be quite congruent.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"9 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135862957","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Frontmatter 头版头条

4区工程技术

Frequenz Pub Date : 2023-10-30 DOI: 10.1515/freq-2023-frontmatter11-12

引用次数: 0

Equivalent circuit of a planar microwave liquid sensor based on metamaterial complementary split ring resonator 基于超材料互补裂环谐振器的平面微波液体传感器等效电路

4区工程技术

Frequenz Pub Date : 2023-10-16 DOI: 10.1515/freq-2023-0111

Samira Mekki, Rami Zegadi, Said Mosbah, Djamel Sayad, Issa Elfergani, Mohamed Lamine Bouknia, Jonathan Rodriguez, Arpan Desai, Merih Palandoken, Chemseddine Zebiri

{"title":"Equivalent circuit of a planar microwave liquid sensor based on metamaterial complementary split ring resonator","authors":"Samira Mekki, Rami Zegadi, Said Mosbah, Djamel Sayad, Issa Elfergani, Mohamed Lamine Bouknia, Jonathan Rodriguez, Arpan Desai, Merih Palandoken, Chemseddine Zebiri","doi":"10.1515/freq-2023-0111","DOIUrl":"https://doi.org/10.1515/freq-2023-0111","url":null,"abstract":"Abstract In the present work, a study of a metamaterial complementary split ring resonator (CSRR) microwave planar sensor for dielectric liquid characterization is carried out using HFSS software. The design consists in a CSRR-loaded two ports rectangular patch microstrip-fed grounded planar structure. The investigated liquid sample is put in a capillary glass tube lying parallel to the surface of the sensor. The liquid test tube is deposited horizontally parallel to the surface of the planar sensor. The advantage of the design lies on the fact that it allows different orientations and multiple size possibilities of the test tube. This makes it possible to explore different resonant frequencies in the 2.1 GHz frequency band. Moreover, an optimization study is carried out to achieve a high sensitivity and a high-quality factor of the proposed sensor. To better understand the operation and to further verify the feasibility of the equivalent circuit, a parallel RLC resonant circuit is used to obtain the desired Z parameter responses Z 11 , Z 22 , Z 21 . A T-shaped electrical model of the proposed sensing structure is established using Advanced Design System (ADS) software. This latter constitutes one of the principal novelties of this work, which has never been addressed so far.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136078078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Design of the Wilkinson power divider with multi harmonic suppression 多谐波抑制威尔金森功率分压器的设计

IF 1.1 4区工程技术

Frequenz Pub Date : 2023-09-07 DOI: 10.1515/freq-2023-0182

Chuan-Min Wang, Junbao Du, Lin Li, Rui-Feng Cao, Chao Pang, Yu-Xin Cui

引用次数: 0

Frontmatter 头版头条

4区工程技术

Frequenz Pub Date : 2023-09-01 DOI: 10.1515/freq-2023-frontmatter9-10

引用次数: 0

A high-gain dual-beam folded transmit-reflect-array antenna based on phase-shifting surface 一种基于移相表面的高增益双波束折叠发射反射阵列天线

IF 1.1 4区工程技术

Frequenz Pub Date : 2023-08-25 DOI: 10.1515/freq-2023-0023

Min Zhang, Baiqing Tang, Xin Li, Peng Jiang, Wei Hu, Wen Jiang, Steven Gao

{"title":"A high-gain dual-beam folded transmit-reflect-array antenna based on phase-shifting surface","authors":"Min Zhang, Baiqing Tang, Xin Li, Peng Jiang, Wei Hu, Wen Jiang, Steven Gao","doi":"10.1515/freq-2023-0023","DOIUrl":"https://doi.org/10.1515/freq-2023-0023","url":null,"abstract":"Abstract In this paper, a high-gain dual-beam folded transmit-reflect-array antenna is designed based on the shared aperture method. It consists of the top transmit-reflect-array, the bottom transmitarray, and the feed horn located at the center of the bottom transmitarray. A phase-shifting surface is proposed as the transmission unit cell capable of transmitting incident waves while providing adequate transmission phase shift. The designed transmission unit cell is improved into the transmit-reflect unit cell by adding polarization grids to realize the reflection function. The bottom transmitarray is constructed by transmission unit cells. The top transmit-reflect-array is composed of transmit-reflect unit cells and polarization grids vertical to the unit cell. The x-polarized wave transmits through the top transmit-reflect-array and forms a pencil beam in the forward direction. In addition, the y-polarized wave is reflected by the top transmit-reflect-array and transmits through the bottom transmitarray to form a pencil beam in the backward direction. The tested realized gains of the transmitted beam and reflected beam at 10 GHz are 19.87 dBi with an aperture efficiency of 48.27 % and 23.95 dBi with an aperture efficiency of 30.88 %, respectively. With its low profile and ease of manufacture, it has great prospects for navigation and radar communication.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45142576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High isolation frequency-reconfigurable UWB-MIMO antenna with on-demand WiMAX band elimination 高隔离频率可重构UWB-MIMO天线，按需WiMAX频段消除

IF 1.1 4区工程技术

Frequenz Pub Date : 2023-08-25 DOI: 10.1515/freq-2023-0033

Summaiyya Saleem, D. Bhatnagar, Sarita Kumari, M. G. Siddiqui, D. Yadav

{"title":"High isolation frequency-reconfigurable UWB-MIMO antenna with on-demand WiMAX band elimination","authors":"Summaiyya Saleem, D. Bhatnagar, Sarita Kumari, M. G. Siddiqui, D. Yadav","doi":"10.1515/freq-2023-0033","DOIUrl":"https://doi.org/10.1515/freq-2023-0033","url":null,"abstract":"Abstract In this article, a planar dual-element frequency reconfigurable multiple-input multiple-output (MIMO) antenna for ultra-wideband (UWB) applications is studied. The frequency band can be switched between UWB operation and single band rejected UWB performance using a pair of PIN diodes in the MIMO configuration. The presented antenna is comprised of two similar slotted circular radiators, having tapered microstrip feedlines and separate partial ground planes. An RT/Duroid 5880 substrate with size 54 × 54 mm2 is used for the design purpose. Rotational symmetry between the radiators and diagonally oriented t-shaped decoupling structure behind the substrate have been utilized for high isolation purpose. The designed MIMO antenna exhibits UWB performance in mode 1. In other mode, the antenna operates in the frequency range 2.46–10.44 GHz with Worldwide Interoperability for Microwave Access (WiMAX) band rejection. Thus, the MIMO antenna exhibits on-demand single band rejection behavior depending on the switching conditions of the diodes. The measured isolation is greater than −20 dB in both the modes. The presented MIMO configuration possesses compact and planar geometry with high gain, good isolation, ultrawideband performance with reconfigurable band elimination, high efficiency and efficient diversity performance parameters. The suggested antenna is a good choice to be utilized for portable UWB MIMO applications.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":"0 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66785872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Defected ground structure based compact UWB dielectric resonator antennas with enhanced bandwidth 基于缺陷接地结构的增强带宽紧凑超宽带介质谐振器天线

IF 1.1 4区工程技术

Frequenz Pub Date : 2023-07-27 DOI: 10.1515/freq-2022-0301

Rasmita Sahu, H. Pradhan, B. B. Mangaraj, S. Behera

{"title":"Defected ground structure based compact UWB dielectric resonator antennas with enhanced bandwidth","authors":"Rasmita Sahu, H. Pradhan, B. B. Mangaraj, S. Behera","doi":"10.1515/freq-2022-0301","DOIUrl":"https://doi.org/10.1515/freq-2022-0301","url":null,"abstract":"Abstract This article introduces two new compact ultra-wide band (UWB) rectangular dielectric resonator antennas (RDRAs) with enhanced bandwidth (BW), gain, and directivity. The RDRAs are designed at 10 GHz resonant frequency. The proposed RDRAs are compactly designed using resonating dielectric material (RDM) of Alumina_96 pct (εr = 9.4, tanδ = 0.006) with overall dimensions of 30 × 20 × 4.6 mm3. The RDMs are mounted on FR4 substrate (εr = 4.4, tanδ = 0.02) with defected ground structure (DGS). The DGS are comprised of rectangular and circular ring slots on it. These compact DGS-RDRAs provides enhanced BW. Prototypes of the two suggested RDRAs are fabricated. The fabricated RDRAs are validated by experimental set-ups. The RDRA with rectangular-ring slot DGS provides impedance BW (S11 < −10 dB) of 33.97 % (8.6658–12.071 GHz). The impedance BW of the other RDRA is 27.97 % (9.08–11.869 GHz). The rectangular-ring slotted RDRA offers radiation efficiency and peak realized gain of 86.4 % and 6.27 dBi, respectively within the band of operating frequencies. The radiation efficiency and realised gain of circular-ring slotted RDRA are 86.18 % and 5.9 dBi, respectively. Good agreements are achieved in between the simulated results and measured results. The results are compared with some recently developed antennas available in literature. The comparison shows that the proposed RDRAs can be suitable candidate for various X-band applications such as satellite downlinks, synthetic aperture radar, weather monitoring by military and some government organizations.","PeriodicalId":55143,"journal":{"name":"Frequenz","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42508711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Performance analysis of mmWave/sub-terahertz communication link for 5G and B5G mobile networks 5G和B5G移动网络毫米波/次太赫兹通信链路性能分析

IF 1.1 4区工程技术

Frequenz Pub Date : 2023-07-25 DOI: 10.1515/freq-2023-0024

Umer Farooq, A. Lokam

引用次数: 0

Wideband self-isolated MIMO antenna element based on multiple adjacent modes coupling current cancellation for 5G mobile terminal application 基于多邻模耦合电流消除的宽带自隔离MIMO天线元件在5G移动终端中的应用

IF 1.1 4区工程技术

Frequenz Pub Date : 2023-07-25 DOI: 10.1515/freq-2022-0293

Bo Pang, Wei Hu, Wen Jiang, Jie Liu, Bao Lu

引用次数: 0