Electromagnetics最新文献_第10页

Cross-Polarization reduction of wideband slot antennas in planar printed configuration 平面印刷结构下宽带缝隙天线的交叉极化抑制

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-08-18 DOI: 10.1080/02726343.2022.2147666

K. Parvez, S. M. Haque

引用次数: 0

Hybrid phase error analysis for dual-polarized reflectarray antenna using asymmetric split patch element 基于非对称劈裂贴片单元的双极化反射天线混合相位误差分析

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-08-18 DOI: 10.1080/02726343.2022.2147667

Min Wang, Yuxin Mo, Xuan Li, Nan Hu, Wenqing Xie, Zhengchuan Chen

{"title":"Hybrid phase error analysis for dual-polarized reflectarray antenna using asymmetric split patch element","authors":"Min Wang, Yuxin Mo, Xuan Li, Nan Hu, Wenqing Xie, Zhengchuan Chen","doi":"10.1080/02726343.2022.2147667","DOIUrl":"https://doi.org/10.1080/02726343.2022.2147667","url":null,"abstract":"ABSTRACT A hybrid phase error analysis for dual-polarized reflectarray antenna using asymmetric split patch element is proposed in this article. The asymmetric split patch consists of a four-leaf patch and two split rings of different size where small one makes the patch asymmeric along y-axis and large one is used for impedance matching. And a complete 360° phase shift is obtained by using variable-size approach and flipping split patch 180° along y-axis. Then, we use hybrid phase error analysis approach to analyze and optimize the influence of phase sensitivity, quasi-periodic influence and phase constant on the reflectarray antenna. The simulated results show that maximum of element phase sensitivity is reduced by 275°/mm and element quasi-periodic phase error is dropped by 38°. Furthermore, dual-polarized reflectarray composed of 676 asymmetric split patch elements is designed, fabricated and measured. The measured gain of the proposed antenna is 29.9 dBi @10.0 GHz with aperture efficiency of 46%. The −1 dB gain bandwidth is 12% @10.0 GHz. The measured results show that the proposed antenna can improve phase accuracy effectively by using hybrid phase error analysis approach with asymmetric split patch.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48720181","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

An ultra-wideband ellipse-shaped linear-to-circular polarization conversion metasurface with high efficiency 一种高效率的超宽带椭圆型线圆极化转换超表面

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-08-18 DOI: 10.1080/02726343.2022.2144062

B. Lin, Wenzhun Huang, Jianxin Guo, Yan-wen Wang, Hongjun Ye, Xiang Ji

{"title":"An ultra-wideband ellipse-shaped linear-to-circular polarization conversion metasurface with high efficiency","authors":"B. Lin, Wenzhun Huang, Jianxin Guo, Yan-wen Wang, Hongjun Ye, Xiang Ji","doi":"10.1080/02726343.2022.2144062","DOIUrl":"https://doi.org/10.1080/02726343.2022.2144062","url":null,"abstract":"ABSTRACT In this work, a high-efficiency ultra-wideband ellipse-shaped linear-to-circular polarization conversion metasurface is proposed. The metasurface is composed of a square array of ellipse-shaped metal patches printed on grounded dielectric substrate and covered by a dielectric layer, because it is an orthogonal anisotropic structure with a pair of mutually perpendicular symmetric axes u and v along the directions ±45° with respect to the vertical y-axis, and the reflection phase difference under u- and v-polarized incidences is very close to −90° in an ultra-wide frequency ranges, both theoretical prediction and numerical simulation show that the metasurface can achieve high-efficiency ultra-wideband linear-to-circular polarization conversion under x- and y-polarized incidences, its 3-dB axial-ratio (AR) band is between 7.08 and 25.86 GHz with a relative bandwidth of 114%, in particular, the AR of its reflected wave can be kept lower than 0.89 dB in the frequency range 7.65–25.32 GHz, in which the polarization conversion rate (PCR) is always larger than 99.73%. Finally, one effective experimental verification is carried out, and a reasonable agreement is observed between the simulation and experimental results. Therefore, the polarization conversion metasurface has great potential application values in various polarization-controlled devices.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49107574","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: 2

A Wideband Single-fed circularly polarized dielectric resonator antenna with bandpass filtering response 具有带通滤波响应的宽带单馈圆极化介质谐振天线

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-08-18 DOI: 10.1080/02726343.2022.2140922

Weihua Luo, Yulu Feng, Yi Ren, Min Wang

引用次数: 0

Multi-band frequency reconfigurable antenna using EBG and parasitic patches 基于EBG和寄生贴片的多频段频率可重构天线

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-08-18 DOI: 10.1080/02726343.2022.2140925

Rahul Tiwari, A. Bagwari, V. Kushwah

{"title":"Multi-band frequency reconfigurable antenna using EBG and parasitic patches","authors":"Rahul Tiwari, A. Bagwari, V. Kushwah","doi":"10.1080/02726343.2022.2140925","DOIUrl":"https://doi.org/10.1080/02726343.2022.2140925","url":null,"abstract":"ABSTRACT This article demonstrated a compact reconfigurable microstrip antenna with a multi-band configuration. It resonates for three different frequency configurations, including the single and dual bands. The primary rectangular patch antenna resonates for WLAN (5.2 GHz center frequency) band. The reconfigurable electromagnetic bandgap (EBG) and parasitic patches near the feed line produce 4 and 6.33 GHz resonance. The defected ground structure is integrated with a PIN diode to make reconfigurable EBG, and it resonated at C band (4 GHz). The PIN diode switching configuration embedded with EBG and one square patch creates dual-band characteristics in wireless local-area network (WLAN) and International Telecommunication Union (ITU) bands. Other PIN diodes switching configurations with primary antenna and two other patches work for C and WLAN bands. The proposed antenna resonated at 4, 5.2, and 6.33 GHz frequencies with different switching configurations of the PIN diode. The simulated results of this novel antenna configuration verified with measured consequences for antenna parameters like reflection coefficient and radiation characteristics are also presented.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45493919","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: 2

A wide inter-absorption dual-transmission dual-polarized frequency selective rasorber based on SRRs 基于SRRs的宽互吸收双透射双极化选频器

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-07-04 DOI: 10.1080/02726343.2022.2118428

G. Sen, Aditi Sharma, Saptarshi Ghosh, Santanu Das

{"title":"A wide inter-absorption dual-transmission dual-polarized frequency selective rasorber based on SRRs","authors":"G. Sen, Aditi Sharma, Saptarshi Ghosh, Santanu Das","doi":"10.1080/02726343.2022.2118428","DOIUrl":"https://doi.org/10.1080/02726343.2022.2118428","url":null,"abstract":"ABSTRACT In this letter, a dual-polarized dual-transmission frequency selective rasorber (FSR) geometry is demonstrated. The top layer of the FSR is built of a cross-dipole design loaded with chip resistors for obtaining a wideband absorption. In addition, two different split ring resonator patterns are printed at each side of the substrate connected by metallized vias to achieve two in-band transmission responses. The bottom layer is designed from a slot geometry to exhibit two transmission bands similar to that of the top layer. The overall FSR structure exhibits a −10 dB reflection response ranging from 2.0 GHz to 8.15 GHz (having a fractional bandwidth of 121%), with transmission peaks appearing at 4.2 GHz and 6.2 GHz having insertion losses of 2.3 dB and 2.9 dB, respectively. The unit cell topology is miniaturized with dimensions of 0.1λL×0.1λL, λL being the free space wavelength at the lowest operating frequency. The proposed FSR also satisfies polarization-insensitive characteristic and angular stability behavior for differentmodes. The working principle behind such wideband absorption and in-band transmission phenomena are analyzed and an equivalent circuit model is presented. A prototype of the proposed FSR is manufactured and measured, confirming the simulated responses.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45754973","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: 1

A compact broadband microstrip slot circularly polarized antenna using parasitic elements 一种采用寄生元件的小型宽带微带槽圆极化天线

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-07-04 DOI: 10.1080/02726343.2022.2118421

Lei Wang, Jingxin Chen, Rui Zhang, Liye Cheng

引用次数: 0

Dual circularly polarized aperture-coupled metasurface antennas with high-isolation for X-band synthetic aperture radars 用于x波段合成孔径雷达的高隔离双圆极化孔径耦合超表面天线

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-07-04 DOI: 10.1080/02726343.2022.2116838

T. Doan, Khac Kiem Nguyen, S. Ta

引用次数: 0

A modified branch line coupler with compact size and ultra wide harmonics suppression band 一种改进型小型超宽谐波抑制带支线耦合器

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-07-04 DOI: 10.1080/02726343.2022.2118422

Samireh Alizadeh, S. Roshani, S. Roshani

引用次数: 1

Ultra-wide stopband waveguide bandpass filter based on out-of-band staggered tuning coupling technology 基于带外交错调谐耦合技术的超宽阻带波导带通滤波器

IF 0.8 4区工程技术

Electromagnetics Pub Date : 2022-07-04 DOI: 10.1080/02726343.2022.2118429

Huan Zou, Haiyang Wang, Jingyi Wu, Rui Xiong, Xiaoqin Liu

{"title":"Ultra-wide stopband waveguide bandpass filter based on out-of-band staggered tuning coupling technology","authors":"Huan Zou, Haiyang Wang, Jingyi Wu, Rui Xiong, Xiaoqin Liu","doi":"10.1080/02726343.2022.2118429","DOIUrl":"https://doi.org/10.1080/02726343.2022.2118429","url":null,"abstract":"ABSTRACT A design method of greatly widening the stopband of waveguide bandpass filter is proposed in this paper. The parasitic passband of the filter mainly comes from the high-order oscillation mode of the resonant unit. Based on the theory of capacitance loading shortening of the transmission line and the transmission characteristics of each mode in the resonant cavity, a pair of transverse one-dimensional uniform capacitive diaphragms are placed in the center of the resonant cavity to shorten the resonant cavity and suppress the high-order modes. By changing the width of the waveguide and the height of the waveguide on the distribution of out-of-band transmission poles, the out-of-band transmission poles of each resonator can be staggered, which destroys or weakens the high-order oscillation coupling transmission conditions between the resonant units of the filter and further expands the stopband width of the filter. The results show that the length of the X-band waveguide bandpass filter (center frequency 9.5 GHz, bandwidth 400 MHz) is reduced by 54%, and the 40 dB stopband rejection bandwidth is 5.7 times the cutoff frequency of the transmission waveguide, compared with the prototype half-wavelength direct-coupled filter of the conventional Chebyshev filter.","PeriodicalId":50542,"journal":{"name":"Electromagnetics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48411025","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