A5102717834- Superconducting Materials and Applications
- Microwave Engineering and Waveguides
- Fusion materials and technologies
- Advanced Antenna and Metasurface Technologies
- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Geophysics and Gravity Measurements
- Gyrotron and Vacuum Electronics Research
- Earthquake Detection and Analysis
- Acoustic Wave Resonator Technologies
- Photonic and Optical Devices
- Solar and Space Plasma Dynamics
- Vacuum and Plasma Arcs
- Welding Techniques and Residual Stresses
- Radio Frequency Integrated Circuit Design
- Graphite, nuclear technology, radiation studies
- Advanced Sensor Technologies Research
University of Science and Technology of China
2018-2022
Institute of Plasma Physics
2009-2012
Chinese Academy of Sciences
2010-2012
A compact broadband phase shifter based on the half-mode substrate-integrated waveguide (HMSIW) is proposed in this letter. By etching interdigital capacitor or adding blind holes and patches into HMSIW, width of HMSIW can be reduced. Moreover, complementary responses series capacitance shunt loading a designed with small deviation. To validate design approach, two shift channels reference channel are fabricated measured. Phase shifts 86° ± 2.5° (and 43.5° 2.5°) fractional bandwidths 53.3%...
EAST plasma facing components (PFCs) have the function of protecting vacuum vessel, heating systems and diagnostic from particles heat loads, also additional to this loads handling. They are installed in vessel together with in-vessel coils, cryopump components. The design, fabrication assembly been finished. PFCs designed up-down symmetry accommodate both double null single configuration. All use graphite tile for surfaces affixed copper alloy sink. A special deep hole drilling technology...
The ionospheric conductivity is an important parameter to describe the state of ionosphere. There a certain distribution law with change solar local time, latitudes and altitudes. In addition, some physical factors have direct effects on conductivities. How these elements, such as activities, geomagnetic index, electron temperature density, influence it has been studied in this thesis, which will provide theoretical foundations ideas for changing conductivities manually.
A new slow-wave structure is proposed in this article to miniaturize the half mode substrate integrated waveguide (HMSIW). Consequently, SW-HMSIW achieves a reduction about 66.81% of SIW transverse dimension. Moreover, phase velocity HMSIW declines by 66.7% at wanted frequency, which corresponds longitudinal Based on SW-HMSIW, compact Riblet-type directional coupler for 3-dB coupling fabricated and measured. The measured S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML"...
In this work, the periodic mushroom structures are loaded in HMSIW. As a result, size of SIW cut-mode cavity is reduced significantly; and wide electromagnetic bandgap appears certain frequency band. Based on structure, compact HMSIW bandpass filter with broad upper stopband designed. The centered at 6.92GHz exhibits an ultrawide up to 37.72 GHz rejection level 20 dB. area only $0.147\lambda_{g}^{2}$, where $\lambda_{g}$ guided wavelength center dielectric. theoretical analysis design method...
Research of ionospheric electric current density is generally based on some theoretical formulas and empirical models. The electrodynamic process charged particles in plasma with a magnetic field can help analyze the formation mechanism so that intensity be simulated studied. Furthermore, by establishing partial differential equations dipole coordinates, mid- low-latitude ionosphere calculated means series more reasonable boundary conditions this article. Besides, wind drag diffusion are...