Bingchuan Xie

Aerospace Information Research Institute

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Co-Authors

Rui Zhang

Aerospace Information Research Institute

Kegang Liu

Chinese Academy of Sciences

Quangui Chao

Aerospace Information Research Institute

Zhicheng Wang

Aerospace Information Research Institute

Lu Tian

Zhengzhou University

Wenke Song

Aerospace Information Research Institute

Zhi-Hui Geng

Shenyang Agricultural University

Xiudong Yang

Chinese Academy of Sciences

Xiaobo Lin

Shijiazhuang Tiedao University

Yunfeng Liao

Aerospace Information Research Institute

Cooperative Institutions

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Aerospace Information Research Institute

Institute of Electronics

Huazhong University of Science and Technology

Xi'an Jiaotong University

Xinxiang Medical University

Chinese Academy of Medical Sciences & Peking Union Medical College

Ocean University of China

Fujian Institute of Research on the Structure of Matter

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Cascaded Barbell Shape Cavity for Millimeter and Terahertz Wave Bands

2021 Cross Strait Radio Science and Wireless Technology Conference (CSRSWTC) (2023)

Bingchuan Xie Rui Zhang Yong Wang

A coupling cavity named cascaded barbell shape cavity is proposed to resolve difficulties that multiple beam devices encountered in sub-terahertz and terahertz bands. Simulation results have confirmed our hypothesis that two barbell shape cavities operating at $TM_{310}$ mode can be concatenated with the same side cavity. Compared with the traditional barbell cavity, the novel cavity demonstrated gratifying properties in enlarging cavity, improving characteristic impedance, decreasing size sensitivity, and lowering cathode loading. Based on such a cavity, we have designed a high-efficiency V-band klystron with genetic algorithm optimization. Driven by five 60 kV 5 A pencil beams, the klystron can produce 453 kW output power, and the corresponding efficiency is 30.2%. The proposed cascaded barbell shape cavity demonstrates great power potential in V-band. The topology can also be used in coupling cavity design in terahertz bands and improve devices' output power several times.

Extremely high frequency

10.1109/csrswtc60855.2023.10426995

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High-order mode interaction structure for a W-band CW sheet beam extended interaction klystron

AIP Advances (2022)

Qi Jin Zhi-Hui Geng Rui Zhang Bingchuan Xie Shuzhong Wang

To solve the problem of mode competition in high-order working modes, this paper presents a fast design method based on the TM31-2π mode for the dumbbell shaped extended interaction cavity. Based on the equivalent circuit theory, the high-frequency characteristics of the structure are studied. In addition, we propose a W-band continuous wave sheet beam extended interaction klystron high-frequency circuit. The circuit was driven by a 20 kV and 0.85 A sheet electron beam, with a 3.2 × 0.3 mm2 section. The beam was focused by a 0.8 T permanent magnet system. The high-frequency system adopts five dumbbell shaped five-gap cavities, and the output system adopts a symmetrical output waveguide. The 3D particle-in-cell simulation shows that more than 1.5 kW power can be obtained at an input power of 0.12 W, and the electron efficiency and gain are 9.2% and 41.2 dB, respectively.

Klystron

W band

Dumbbell

Electron gun

10.1063/5.0122835

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Design and analysis of the output windows of a doorknob structure for high-power P-band klystron

AIP Advances (2022)

Quangui Chao Rui Zhang Yong Wang Bingchuan Xie Xiaobo Lin

This article presents the design, analysis, and simulation for the klystron coaxial radio frequency (RF) output windows. Three new RF windows (Type-2, 3, and 4) are proposed based on the coaxial RF window with a doorknob structure (Type-1) to improve its performances. The proposed RF windows are simulated in high frequency simulator structure. At the operating frequency, the return loss are obtained as −49, −60, −56, and −52 dB, and the insert loss as −0.003 62, −0.002 51, −0.002 74, and −0.003 dB, respectively, for Type1, 2, 3, and 4. Moreover, for Type-1, the E-field near the short-circuit surface is significantly greater than that near the output port side due to the asymmetrical structure of RF window. However, this phenomenon has been greatly improved in the proposed RF windows. The heat load because of RF power absorption over the ceramic has been calculated. The distribution of heat load in three new windows is more uniform and less than that in Type-1, and the heat load in Type-2 is about half of that in Type-1. The thermal and structural analyses of RF windows predict the lower temperature and less mechanical deformation for the three new RF windows. Multipactor analysis is carried out to determine the safety at the operating power level.

Klystron

Return loss

Coaxial

10.1063/5.0111416

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Multi-beam gun design for an S-band klystron

AIP Advances (2022)

Xiaobo Lin Rui Zhang Quangui Chao Bingchuan Xie Zhi-Hui Geng

This paper introduces the detailed design scheme of a multi-beam electron gun applied to an S-band high power multi-beam klystron. The multi-beam gun adopts a coaxial cavity arrangement, and the total number of electron beams are 40 (19 in the inner layer and 21 in the outer layer). The working voltage of the electron gun is 60 kV, the total current is 300 A (evenly distributed on 40 electron beams), and the single beam perveance is 0.51 μP. The total perveance is 20.4 μP. The cathode loading of the gun is 12 A/cm2, which can meet the requirements of cathode operational lifetime. The beam focusing system uses a periodic reversal permanent magnet to realize miniaturization of the klystron.

Perveance

Klystron

Electron gun

10.1063/5.0100499

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Design of a High-Power V-Band Klystron With Internal Coupling Multigap Cavity

IEEE Transactions on Electron Devices (2022)

Bingchuan Xie Rui Zhang Yong Wang Huanhuan Wang Xu Zhang

In this article, the design study of a V-band klystron with an internal coupling cavity is presented. The effective characteristic impedance of the internal coupling cavity is approximately 25% higher than that of the external coupling cavity when both operate at

$\pi $

mode. A V-band RF circuit of 35% efficiency has been designed based on the proposed internal coupling cavity. An RF circuit based on single-gap resonators was designed first with the help of genetic algorithms (GAs). Then, a five-gap internal coupling cavity replaced the last several resonators to improve circuit bandwidth and efficiency. Simulation results have shown that the proposed internal coupling cavity can significantly improve the efficiency and bandwidth of an RF circuit based on single-gap resonators. Driven by a 60-kV and 9-A pencil beam, the designed RF circuit can achieve a peak power of 188.5 kW, a gain of 47.8 dB, and a 1-dB bandwidth of 180 MHz. The matching high compression ratio beam optics is also elaborated in this article.

Klystron

10.1109/ted.2022.3159260

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W-Band Broadband Circularly Polarized Reflectarray Antenna

Electronics (2023)

Zhicheng Wang Rui Zhang Wenke Song Bingchuan Xie Xiaobo Lin

We propose a W-band circularly polarized reflectarray antenna in this article, which contains a single-layer reflectarray and a linearly polarized horn feed. To realize the proposed antenna, we designed a novel W-band multi-resonant element containing a Rogers RT5880 substrate with copper patches printed on its both surfaces. Then, a circular reflectarray with 12.25 λ0 (39.1 mm) aperture diameter was designed based on the proposed multi-resonant element, whose center frequency is 94 GHz. We further fabricated the proposed circular reflectarray and tested its performance. In the measured results, we can see that the obtained 1 dB gain bandwidth is 19.1% (91~109 GHz) and the obtained 2 dB gain bandwidth can reach as wide as 27.6% (89~115 GHz). Moreover, the 3 dB axial ratio bandwidth is 13.8% (89~102 GHz). The measured gain of our proposed reflectarray antenna at 94 GHz is 29.1 dBi and the corresponding aperture efficiency can reach as high as 52.0%. Those results show that our proposed antenna may be prospective in wireless communication applications due to its strengths in broadband and high aperture efficiency.

Axial ratio

Aperture (computer memory)

Antenna gain

10.3390/electronics12183849

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Citations (1)

Broadband Nonperiodic Metasurface Antenna With Size-Varied Square Patches

2022 International Conference on Microwave and Millimeter Wave Technology (ICMMT) (2023)

Bin Yuan Bingchuan Xie Huanhuan Wang Huiru Zhang Zhongjun Yu

A novel broadband nonperiodic metasurface antenna with sized-varied patches has been proposed in this paper. Characteristic mode analysis is performed to analyze the radiation modes of the designed metasurface antenna. The metasurface is composed of 4 × 4 sized-varied patch units. Compared with a metasurface antenna whose radiation patches are not size-varied, the proposed antenna has an 11% improvement in 2-dB gain bandwidth. The proposed antenna can achieve an impedance bandwidth of 54.1%, and the 2-dB gain bandwidth is 43.3%. Moreover, it has a low profile of 0.08λ and a ground plane of 1.24 × 1.24λ ² . The cross-polarization level in H-plane is below -30 dB.

Ground plane

10.1109/icmmt58241.2023.10276601

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Broadband metasurface antenna with size‐varying square patches

Microwave and Optical Technology Letters (2023)

Bingchuan Xie Rui Zhang Huanhuan Wang Yong Wang Zhicheng Wang

Abstract This paper proposes a broadband metasurface antenna with size‐varying patches. The metasurface radiator is fed by a microstrip line through a coupling slot on the ground. By varying two parameters of the square patches, great mode controllability can be achieved, resulting in wideband and stable gain. Furthermore, the added slotted metal square ring can effectively improve radiation gain. We designed and tested a C‐band wideband antenna consisting of 4 4 novel radiator units. The measured impedance bandwidth and 2‐dB gain bandwidth are 59% (4.3–7.9 GHz) and 44.1% (4.6–7.2 GHz), respectively. The designed antenna has a low profile of 0.09 .

Wideband

Ground plane

Square (algebra)

Radiator (engine cooling)

10.1002/mop.33867

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Design of a High-power V-band Klystron Based on Novel Coupling Cavity with Ridges Loading in the Middle

2022 Photonics & Electromagnetics Research Symposium (PIERS) (2021)

Bingchuan Xie Rui Zhang Yong Wang Xu Zhang Hao Chen

A novel coupling cavity with ridges loaded in the middle of cavity have been proposed to cope with the large drift tube klystron design. Comparison with TM310 barbell shaped cavity have been made to determine properties of such a novel cavity. Simulation results have shown that the novel cavity shares the same coupling coefficient with TM310 barbell shaped cavity. However, novel cavity has a dramatically increase in characteristic impedance. Based on such novel cavity, a high-power V-band klystron have been designed. The V-band klystron features with relatively large drift tube and high total current. Under the condition of a drift tube radius of 0.25mm, the total current can reach 2.32A. Particle-in-cell simulation shows that the klystron works well without mode competition. With the operating voltage of 20 kV and input power of 1.125 W, the output power of 5.24kW and the 3 dB instantaneous bandwidth of 190MHz are achieved.

Klystron

Drift tube

Traveling-wave tube

10.1109/piers53385.2021.9694987

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Investigation of Lower Band-Edge Oscillation for TWT with Double Corrugated Waveguide

Kegang Liu Qianzhong Xue Naining Guo Wenke Song Bingchuan Xie

Exploring diverse operating points or regimes on the dispersion curve of a specific periodic geometry plays an important role in making full use of its capability and enlarging the application space. In such perspective, the region in the vicinity of the band edge represents not only a potential factor for self-oscillation detrimental for a stable operation, but also a realm with a group velocity approaching to zero, which might lead to a stronger interaction. Stemming from that, lower band-edge oscillation of TWT with double corrugated waveguide is explored and investigated in detail.

Oscillation (cell signaling)

Waveguide

10.1109/csrswtc56224.2022.10098446

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Citations (2)