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Zero ground clearance dual antenna pair for metal-cased fifth-generation multiple input multiple output smartphone Correspondence

Le CHANG, Wenbao HE, Xiaomin CHEN, Xiaoxue TAN, Juan CHEN, Kai KANG, Yang YANG

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 10,   Pages 1562-1567 doi: 10.1631/FITEE.2200119

Abstract:

The fifth-generation (5G) era has already arrived and many applications are prospering. The multiple input multiple output (MIMO) system is the key to enhancing channel capacity for both the fourthgeneration (4G) wireless communication and 5G systems. For a smartphone, the most challenging task for antenna engineers is to accommodate the numerous 4G and 5G multi-port antennas while avoiding mutual coupling problems (Li Y et al., 2009, 2012; Hong, 2017; Sharawi et al., 2017). Therefore, implementing multiple antennas within a small space is a worthwhile topic to study, especially for antennas operating at the same frequency.

Keywords： 天线对；第五代移动通信技术（5G）；Sub-6 GHz；极化正交；智能终端；智能手机；零净空；全金属外壳；多输入多输出（MIMO）    

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Cu-doped Bi/Bi<sub>2sub>WO<sub>6sub> catalysts for efficient N<sub>2sub> fixation by photocatalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1412-1422 doi: 10.1007/s11705-023-2312-1

Abstract: In this paper, Cu-doped Bi<sub>2sub>WO<sub>6sub> was synthesized via a solvothermal method and applied>2sub>WO<sub>6sub> composite.>2sub>WO<sub>6sub>.The optimized NH<sub>3sub> generation rates of Bi/Cu-Bi<sub>2sub>WO<sub>6sub> reached 624 and 243>2sub>WO<sub>6sub>, respectively.

Keywords： Bi<sub>2sub>WO<sub>6sub>     Cu doping     work function     photocatalytic N<sub>2sub> fixation     charge    

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All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1925-1936 doi: 10.1007/s11705-023-2344-6

Abstract: A leading star in photocatalysis has been revealed as lead-free Cs<sub>2sub>AgBiBr<sub>6sub> doubleIn this work, this photocatalytic process was facilitated by a unique TiO<sub>2sub>/Cs<sub>2sub>AgBiBr<sub>6sub> composite, which was identified as an S-cheme heterojunction.TiO<sub>2sub>/Cs<sub>2sub>AgBiBr<sub>6sub> composite was investigated for its structure and photocatalytic>2sub>/Cs<sub>2sub>AgBiBr<sub>6sub> composites, which will facilitate the generation of new ideas

Keywords： Cs<sub>2sub>AgBiBr<sub>6sub> nanocrystals     visible-light photocatalyst     Cs<sub>2sub>AgBiBr<sub>6sub>/TiO<sub>2sub> heterojunction    

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Record-Breaking Frequency of 44 GHz Based on the Higher Order Mode of Surface Acoustic Waves with LiNbO<sub>3sub>/SiO<sub>2sub>/SiC Heterostructures Article

Jian Zhou,Dinghong Zhang,Yanghui Liu,Fengling Zhuo,Lirong Qian,Honglang Li,Yong-Qing Fu,Huigao Duan

Engineering 2023, Volume 20, Issue 1,   Pages 112-119 doi: 10.1016/j.eng.2022.05.003

Abstract: a LiNbO3/SiO2/SiC heterostructure and successfully achieve a record-breaking frequency of about 44 GHz

Keywords： Ultra-high frequency     SAW     Higher order mode     Hypersensitive detection    

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Antibacterial and anti-flaming PA6 composite with metathetically prepared nano AgCl@BaSO

Wei Zhang, Boren Xu, Caihong Gong, Chunwang Yi, Shen Zhang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 340-350 doi: 10.1007/s11705-020-1942-9

Abstract: Then, the dried co-precipitates were melt-compounded with polyamide 6 (PA6) resins at a specified massagent or carrier, the nanoparticles of AgCl@BaSO co-precipitates were homogeneously dispersed in the PA6the antibacterial performance, along with the flame-retardance and anti-dripping characteristics of PA6,In addition, the PA6 composites possessed high spinnability in producing pre-oriented yarn.

Keywords： nano AgCl@BaSO<sub>4sub> co-precipitates     antibacterial     flame resistance     PA6 composite     PA6 yarn    

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Piezocatalytic performance of FeO−BiMoO catalyst for dye degradation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 6,   Pages 716-725 doi: 10.1007/s11705-022-2265-9

Abstract: A Fe<sub>2sub>O<sub>3sub>−Bi<sub>2sub>MoO<sub>6sub> heterojunction was synthesized via a hydrothermalBi<sub>2sub>MoO<sub>6sub> composite catalyst under 60 min of ultrasonic vibration.>2sub>O<sub>3sub> and Bi<sub>2sub>MoO<sub>6sub>, which effectively separated the ultrasound-induced>3sub>−Bi<sub>2sub>MoO<sub>6sub> catalyst was proposed based on the band potential and quenchingThe results demonstrated the potential of using Fe<sub>2sub>O<sub>3sub>−Bi<sub>2sub>MoO<sub>6

Keywords： piezocatalysis     Fe<sub>2sub>O<sub>3sub>−Bi<sub>2sub>MoO<sub>6sub>     dye decomposition     ultrasonic    

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Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1937-1948 doi: 10.1007/s11705-023-2353-5

Abstract: In this study, Bi<sub>2sub>MoO<sub>6sub> with adjustable rich oxygen vacancies was prepared by aThe experiment results show that Bi<sub>2sub>MoO<sub>6sub> with rich oxygen vacancies is an excellentThe photocatalytic ability of BMO-10 is 0.3 and 3.5 times higher than that of the pristine Bi<sub>2sub>MoO<sub>6sub> for Rhodamine B degradation and Cr(VI) reduction, respectively.

Keywords： Bi<sub>2sub>MoO<sub>6sub>     oxygen vacancies     photoreduction     Cr(VI)     RhB    

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Effective degradation of tetracycline by mesoporous Bi

Xiaolong CHU,Guoqiang SHAN,Chun CHANG,Yu FU,Longfei YUE,Lingyan ZHU

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 211-218 doi: 10.1007/s11783-014-0753-y

Abstract: Bi WO was synthesized with a hydrothermal method at different pHs and used for the degradation of tetracycline (TC) in water. The mesoporous Bi WO prepared at pH 1 (BWO-1) displayed the highest adsorption and degradation capacity to TC due to its large surface area and more efficient capacity to separate photogenerated electrons and holes. 97% of TC at 20 mg·L was removed by BWO-1 at 0.5 g·L after 120 min irradiation under simulated solar light. Only 31% of the total organic carbon (TOC) was removed after 360 min irradiation although the TC removal reached 100%, suggesting that TC was mainly transformed to intermediate products rather than completely mineralized. The intermediates were identified by high-performance liquid chromatography-time of flight-mass spectrometry (HPLC-TOF-MS) and possible photodegradation pathways were proposed.

Keywords： Bi<sub>2sub>WO<sub>6sub>     hydrothermal synthesis     tetracycline (TC)     photocatalysis    

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Fabrication of highly efficient Bi

Wei Mao, Lixun Zhang, Tianye Wang, Yichen Bai, Yuntao Guan

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1344-8

Abstract: Abstract • A novel Bi2WO6/CuS composite was fabricated by a facile solvothermal method. • This compositeA visible-light-driven Bi2WO6/CuS p-n heterojunction was fabricated using an easy solvothermal methodThe Bi2WO6/CuS exhibited high photocatalytic activity in a mixed system containing rhodamine B (RhB),Bi2WO6/CuS can be applied over a wide pH range (2–6) with strong photocatalytic activity for RhB, TCHTCH) and oxidizing pollutants (e.g., Cr(VI)) coexist in wastewater, the p-n heterojunction in Bi2WO6/

Keywords： Photocatalysis     Bi<sub>2sub>WO<sub>6sub>/CuS     Organic pollutants     Cr(VI)     Synergistic effect    

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Morphology selective construction of

Maher Darwish, Ali Mohammadi, Navid Assi, Samer Abuzerr, Youssef Alahmad

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 4,   Pages 561-578 doi: 10.1007/s11705-019-1808-1

Abstract: Controlled growth of Bi WO nanorods with exposed [0 0 1] facets and the fabrication of an Fe O -Bi WO magnetic composite by a microwave-assisted polyol process, were achieved in this study. The adsorptivity and photocatalytic performance of the composite toward sunset yellow dye degradation were greatly enhanced by the -cyclodextrin cavities on its surface, firmly anchored through a cetyltrimethylammonium bromide linkage. A series of examinations and characterizations were carried out to determine the influence of various factors on the morphological modulation-photocatalytic behavior of the pure Bi WO prior to final functionalization. Changing the pH of the precursor solution impacted the formation of 0D, 2D, and 3D structures; however, the presence of hexamethylenetetramine surfactant induced the development of 1D nanorod structure. A reasonable crystal growth mechanism was proposed to elucidate the formation process. Conversely, the mechanism of the activity enhancement of -cyclodextrin functionalized Fe O -Bi WO , compared to that of the non-functionalized samples, could be realized with the assistance of chemical trapping experiments on sunset yellow, and was confirmed on the colorless antibiotic (sulfamethoxazole). The high performance and durability of this composite can be attributed to the facet-dependent activity, large adsorption capacity due to inclusion interactions, enhanced visible light absorption, and efficient charge separation.

Keywords： β-cyclodextrin     Bi<sub>2sub>WO<sub>6sub>     shape controlled     nanorod     sunset yellow    

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Research and Development of Heat-Resistant Materials for Advanced USC Power Plants with Steam Temperatures of 700 °C and Above Review

Fujio Abe

Engineering 2015, Volume 1, Issue 2,   Pages 211-224 doi: 10.15302/J-ENG-2015031

Abstract: temperatures of 700 °C and above have been performed in order to achieve high efficiency and low CO<sub>2sub> emissions in Europe, the US, Japan, and recently in China and India as well.

Keywords： strength     creep-fatigue property     welded joint     grain boundary     microstructure     &gamma     &prime     M<sub>23sub>C<sub>6sub> carbide    

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OTFS modulation performance in a satellite-to-ground channel at sub-6-GHz and millimeter-wave bands with

Tianshi Li, Ruisi He, Bo Ai, Mi Yang, Zhangdui Zhong, Haoxiang Zhang,19125026@bjtu.edu.cn,ruisi.he@bjtu.edu.cn,boai@bjtu.edu.cn,17111030@bjtu.edu.cn,zhdzhong@bjtu.edu.cn,zhx61778294@126.com

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4,   Pages 517-526 doi: 10.1631/FITEE.2000468

Abstract: modulation performance for geostationary Earth orbit and low Earth orbit satellite-to-ground channels at sub-6-GHz and millimeter-wave bands in both line-of-sight and non-line-of-sight cases.

Keywords： 时延-多普勒域；高移动性通信；最小均方误差算法；正交时频空；星地通信；毫米波通信    

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Molecular level understanding of CO<sub>2sub> capture in ionic liquid/polyimide composite membrane

Linlin You, Yandong Guo, Yanjing He, Feng Huo, Shaojuan Zeng, Chunshan Li, Xiangping Zhang, Xiaochun Zhang

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 141-151 doi: 10.1007/s11705-020-2009-7

Abstract: (trifluoromethylsulfonyl)imide composited with 4,4-(hexafluoroisopropylidene) diphthalic anhydride (6FDA)-based PI, 6FDA-2,3,5,6-tetramethyl-1,4-phenylene-diamine, at different IL concentrations were investigated

Keywords： carbon dioxide     ionic liquid     6FDA-TeMPD     composite membrane     molecular dynamics simulation    

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Synthesis of ［RMIm］PF6（R=P, B, C6）ionic liquid under microwave irradiation and research of its conductivity

He Yongfu

Strategic Study of CAE 2008, Volume 10, Issue 9,   Pages 92-95

Abstract: bromize([BMIm]Br), 1-propyl-3-methylimidazolium bromize([PMIm]Br), 1-hexyl-3-methylimidazolium bromize ([C6MImEach of them reacted separately with HPF6 for 4 hours at room temperature to get hydrophobic imidazoliumionic liquids:1-butyl-3-methyl-imidazolium hexafluorophosphate([BMIm]PF6) and 1-propyl-3-methyl-imidazoliumhexafluorophosphate([PMIm]PF6),1-Hexane-3-methyl-imidazolium hexafluorophosphate([C6MIm]PF6).

Keywords： ionic liquids     microwave irradiation     conductivity     [BMIm]PF6     [PMIm]PF6     [C6MIm]PF6    

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Integrated 60-GHz miniaturized wideband metasurface antenna in a GIPD process Research Articles

Hai-yang XIA, Jin-can HU, Tao ZHANG, Lian-ming LI, Fu-chun ZHENG

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 174-181 doi: 10.1631/FITEE.1900453

Abstract: We propose a miniaturized wideband metasurface antenna for 60-GHz antenna-in-package applications.setup, the antenna prototype is measured, demonstrating a 10-dB impedance bandwidth from 53.3 to 67 GHzAt 60 GHz, the antenna gain measured is about 5 dBi in the boresight direction with a compact radiation

Keywords： 60 GHz     Antenna-in-package (AiP)     Coplanar-waveguide-fed (CPW-fed) ring resonators     Glass integrated passive    

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Title Author Date Type Operation

Zero ground clearance dual antenna pair for metal-cased fifth-generation multiple input multiple output smartphone

Le CHANG, Wenbao HE, Xiaomin CHEN, Xiaoxue TAN, Juan CHEN, Kai KANG, Yang YANG

Journal Article

Cu-doped Bi/Bi<sub>2sub>WO<sub>6sub> catalysts for efficient N<sub>2sub> fixation by photocatalysis

Journal Article

All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Journal Article

Record-Breaking Frequency of 44 GHz Based on the Higher Order Mode of Surface Acoustic Waves with LiNbO<sub>3sub>/SiO<sub>2sub>/SiC Heterostructures

Jian Zhou,Dinghong Zhang,Yanghui Liu,Fengling Zhuo,Lirong Qian,Honglang Li,Yong-Qing Fu,Huigao Duan

Journal Article

Antibacterial and anti-flaming PA6 composite with metathetically prepared nano AgCl@BaSO

Wei Zhang, Boren Xu, Caihong Gong, Chunwang Yi, Shen Zhang

Journal Article

Piezocatalytic performance of FeO−BiMoO catalyst for dye degradation

Journal Article

Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

Journal Article

Effective degradation of tetracycline by mesoporous Bi

Xiaolong CHU,Guoqiang SHAN,Chun CHANG,Yu FU,Longfei YUE,Lingyan ZHU

Journal Article

Fabrication of highly efficient Bi

Wei Mao, Lixun Zhang, Tianye Wang, Yichen Bai, Yuntao Guan

Journal Article

Morphology selective construction of

Maher Darwish, Ali Mohammadi, Navid Assi, Samer Abuzerr, Youssef Alahmad

Journal Article

Research and Development of Heat-Resistant Materials for Advanced USC Power Plants with Steam Temperatures of 700 °C and Above

Fujio Abe

Journal Article

OTFS modulation performance in a satellite-to-ground channel at sub-6-GHz and millimeter-wave bands with

Tianshi Li, Ruisi He, Bo Ai, Mi Yang, Zhangdui Zhong, Haoxiang Zhang,19125026@bjtu.edu.cn,ruisi.he@bjtu.edu.cn,boai@bjtu.edu.cn,17111030@bjtu.edu.cn,zhdzhong@bjtu.edu.cn,zhx61778294@126.com

Journal Article

Molecular level understanding of CO<sub>2sub> capture in ionic liquid/polyimide composite membrane

Linlin You, Yandong Guo, Yanjing He, Feng Huo, Shaojuan Zeng, Chunshan Li, Xiangping Zhang, Xiaochun Zhang

Journal Article

Synthesis of ［RMIm］PF6（R=P, B, C6）ionic liquid under microwave irradiation and research of its conductivity

He Yongfu

Journal Article

Integrated 60-GHz miniaturized wideband metasurface antenna in a GIPD process

Hai-yang XIA, Jin-can HU, Tao ZHANG, Lian-ming LI, Fu-chun ZHENG

Journal Article