Xinhua Yu

Guilin University of Electronic Technology

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Weiping Cao

Guilin University of Electronic Technology

Yannan Jiang

Guilin University of Electronic Technology

Xi Gao

Chongqing University of Posts and Telecommunications

Yiying Wang

Guilin University of Electronic Technology

Xinjian Niu

University of Electronic Science and Technology of China

Simin Li

Beihang University

Linping Feng

Shenzhen Technology University

Wu Xianxi

Guilin University of Electronic Technology

Jinjun Mo

Guilin University of Electronic Technology

Niu Xinjian

University of Electronic Science and Technology of China

Cooperative Institutions

Guilin University of Electronic Technology

University of Electronic Science and Technology of China

Chinese Academy of Sciences

Shanghai Jiao Tong University

Xi'an Jiaotong University

Central South University

Xidian University

Fudan University

Beihang University

University of Chinese Academy of Sciences

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A facile process for preparing superhydrophobic PBZ-PTFE coating with excellent stable properties

Applied Physics A (2016)

Sheng Lei Zhongqi Shi Junfei Ou Wen Li Guanjun Qiao

Superhydrophobic coating

10.1007/s00339-016-0514-9

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Citations (6)

A TE<SUB>6,2</SUB> 94 GHz inner quasi-optical mode converter

JOURNAL OF INFRARED AND MILLIMETER WAVES (2012)

Xinjian Niu Ling Gu Xinhua Yu Hongfu Li

Mode (computer interface)

10.3724/sp.j.1010.2011.00429

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Citations (1)

A Millimeter-Wave (V-Band) Dual-Circular-Polarized Horn Antenna Based on an Inbuilt Monogroove Polarizer

IEEE Antennas and Wireless Propagation Letters (2020)

Ningning Luo Xinhua Yu Ghanshyam Mishra Satish K. Sharma

In this letter, a high-performance dual circularly polarized (CP) circular waveguide horn antenna operating in the V-band (54-60 GHz) is analyzed, built, and tested. The antenna is designed from a cylindrical waveguide section and consists of two mutually orthogonal side-fed ports, a mono-groove, and a conical horn section. The mono-groove is an annulus sector placed at 45° with respect to both the input ports and provides a phase delay of 90° to generate right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP). Simulation results show that the proposed CP horn antenna has interport isolation more than 15 dB, axial ratio (AR) below 2.2 dB, and polarization isolation over 25 dB in the impedance matching bandwidth from 54 to 60 GHz. Also, the proposed antenna provides symmetric radiation patterns. A prototype of this antenna has been fabricated using computer numerical control (CNC) machining technique. The experimental results show good agreement with the simulation results.

Feed horn

Axial ratio

Polarizer

Horn antenna

10.1109/lawp.2020.3015745

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Citations (29)

Design of a 30.5 GHz Transition for Gyro-TWT

Journal of Infrared Millimeter and Terahertz Waves (2009)

Xinhua Yu Lin Meng Xinjian Niu

Mode (computer interface)

Microwave transmission

Fractional bandwidth

10.1007/s10762-009-9556-9

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Citations (1)

Design of multistage gradient coaxial based on axial dislocation compensation method

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) (2016)

Jun Zhang Yannan Jiang Weiping Cao Xi Gao Xinhua Yu

Impedance matching is the essential requirement in the design of a coaxial structure. The abrupt change of the inner and outer diameter of the coaxial structure will lead to the change of its characteristic impedance, and then enormous reflection would be excited if the failure of the proper design. In this article, a structure of multistage gradient coaxial is built, which is based on the axial dislocation compensation method (ADCM). Then, its performance is investigated through CST simulation and the theory of equivalent two port network. The contrastive results show that the VSWR of the presented structure through ADCM with equivalent circuit method much better than empirical method in the entire wave range of investigated. In addition, the combination of multistage buffering gradient method and ADCM can be used to suppress the reflection for the large scale gradient coaxial structure.

Coaxial

Reflection

10.1109/isape.2016.7834090

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Citations (0)

High-Power TE01–TE11 Mode Converter for Gyroklystron

Journal of Fusion Energy (2012)

Xinjian Niu Xinhua Yu Simin Li Xi Gao Weiping Cao

Klystron

Mode (computer interface)

10.1007/s10894-012-9589-2

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Citations (8)

A Feature Selection Algorithm Based on Boosting for Road Detection

Yun Sha Xinhua Yu Guoying Zhang

Feature selection is very important for road detection. Generally, optimal feature set is very hard to be determined manually by prior-knowledge. In this paper, a feature selection algorithm based on boosting is proposed. To fully utilize potential feature correlations, the features are combined. The feature vector is enlarged by the combined features, and the new feature vector is called raw feature vector. In this paper, the classify power of each feature is evaluated by the error rate and converge speed of boosting classifier which is based on single feature. After that, the features are selected according to itpsilas classify power. The selected features are reassembled to B-feature vector. Then features are weighted according to its power in classification. The weighted B-feature vector is called B-W-Feature Vector. Three classifiers are used to evaluate the raw feature vector, the B-Feature and the B-W-Feature. The experiment results show selected and weighted feature vector can improve the classification performance.

Boosting

Feature vector

Feature (linguistics)

Linear classifier

Statistical classification

10.1109/fskd.2008.550

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Citations (5)

Temperature Rise Study on Aircraft Engine Fluid Distribution Tubes Subjected to Oil Burner

DEStech Transactions on Environment Energy and Earth Science (2019)

Long Chen Yuan Chen Xinhua Yu Wen-ting BAO

There are lots of tubes in aircraft engine nacelle to transfer different kinds of fluid to other parts of the aircraft. These tubes is required to be tested by standard oil burner, which provides an environment of temperature about 2000 °F and heat flux about 11.9 W/m2. The purpose of this paper is to achieve a better understanding of the heat transfer process of tube fire test and make prediction on the temperature rise before samples were subjected to the test facility. The flow rate was studied by both theoretical and experimental method to determine its influence on temperature rise. Also, temperature rise of Jet A-1 fuel and lubricant RIPP 4050, which have different fluid characteristics, was used for comparison of the model. The result shows a good compliance between theoretical value and experimental measurements.

Jet engine

Nacelle

10.12783/dteees/eece2019/31526

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Citations (0)

改良された広帯域円偏波CPW給電スロットアンテナ【Powered by NICT】

IEEE Conference Proceedings (2016)

Xinhua Yu Li Wei Weiping Cao Li Si-min Xi Gao

Source

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Citations (0)

Optimized Analyses of Gain Enhancement with Metasurface Cells

2021 13th International Symposium on Antennas, Propagation and EM Theory (ISAPE) (2024)

Jiaming Li Xinhua Yu Jinjun Mo Lucong Lu Yiying Wang

10.1109/isape62431.2024.10840729

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Citations (0)