A5005901039- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Radio Frequency Integrated Circuit Design
- Microwave and Dielectric Measurement Techniques
- Electromagnetic Compatibility and Noise Suppression
- Metamaterials and Metasurfaces Applications
- Electromagnetic Launch and Propulsion Technology
- Microgrid Control and Optimization
- Advanced MEMS and NEMS Technologies
- Structural Response to Dynamic Loads
- Semiconductor Lasers and Optical Devices
- Power System Optimization and Stability
- Millimeter-Wave Propagation and Modeling
- Engineering Diagnostics and Reliability
- Geomechanics and Mining Engineering
- Thermal Analysis in Power Transmission
- Machine Fault Diagnosis Techniques
- Power Line Communications and Noise
- Antenna Design and Analysis
- HVDC Systems and Fault Protection
- Vibration and Dynamic Analysis
- Rock Mechanics and Modeling
- Icing and De-icing Technologies
- Fault Detection and Control Systems
- Geoscience and Mining Technology
Xi'an Jiaotong University
2020-2023
Shanghai Jiao Tong University
2018
Fujian Electric Power Survey & Design Institute
2010-2015
Electric Power Research Institute
2011-2012
In this article, a full-metal transmitarray (TA) is proposed with gain-filtering characteristics. The units of the TA are designed based on square waveguide filter different orders and cavity widths, but same passband. phase variation in achieved by large group velocity evanescent mode coupling cavity. Hence, unit can achieve gain filtering wavefront manipulation simultaneously. To verify performance design, multibeam prototype fabricated at center frequency 26.0 GHz. size <inline-formula...
This letter presents a 135–150 GHz high-efficiency and -power Schottky diode-based tripler integrated with low-loss waveguide filtering matching network. The active diode monolithic microwave circuit (MMIC) is matched two filters based on coupling matrix theory for two-port network complex impedance terminations. the MMIC are via microstrip-to-waveguide transition, allowing compact design relatively higher loss MMIC. In addition, an on-chip capacitor implemented to isolate dc RF paths....
In this paper, we present a new type of waveguide GSG probe for mmWave on-wafer measurements. The proposed design integrates tip, micro-coaxial transmission line (TL), and waveguide-to-coaxial transition in one structure. port the can be inserted into section rectangular waveguide, then directly connected with vector network analyzer (VNA). To optimize contact force between tip device under test (DUT), inner outer conductors are designed to have different heights. verify performance design,...
This brief presents a compact (5mm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\times 56$ </tex-math></inline-formula> mm) and ultra-wideband directional coupler fabricated by copper additive manufacturing. The is directly synthesized through the even/odd mode extraction algorithm realized from pair of coupled air-filled rectangular coaxial lines with working frequency 0.22-26.5GHz (usable to 10MHz)....
This brief presents a selective laser melting (SLM) 3-D printed Ku-band diplexer using dual-mode resonators with high thermal stability. The is designed dimpled ellipsoid which enables the mechanically self-supported in fabrication. Hence, design has higher compatibility SLM printing process and can be extended to multiplexers more channels. excellent stability benefited from both 4J36 invar alloy material lower coefficient of expansion (C.T.E) as well tailored process. Electrical...
Abstract The design of compact dual‐mode/band filters based on gap waveguide and 3D printing technology is presented in this paper. spatial power divider designed to arrange the external coupling. And multi‐slot middle plate devised manage coupling between dual‐mode cavities, introducing non‐resonating modes produce additional transmission zeros improving selectivity. Moreover, structure are built up optimized for technology. Finally, fabricated measured verify design.
This paper presents a horn antenna with 5th-order dual-mode ellipsoid resonator filtering network, fabricated by stereo lithography apparatus 3-D printing technic. The part employs two dimpled resonators, operating at the fundamental TM101 mode. Compared to filters employing cylindrical resonators tuning posts, proposed network is lower loss (due high Qu resonator) and performance less sensitive fabrication errors. was demonstrated Ku band (12–18 GHz), measured RL >10 dB across passband of...
The short circuit collapse problem of electric power system attacked by graphite bombs was investigated. harm and the vulnerability electrical network were analyzed. Two kinds failure modes called direct indirect presented accordingly. arc generation mechanism conductive filaments dispensed from analyzed concept compulsively consecutive presented. Then verifying experiments under condition high voltage small current done. blockade principle also In order to react attack effectively, clearing...
Morgan theoretical formula current in the wire is right under steady state conditions, yet transmission line load and meteorological conditions are always changing a dynamic, so there much error between values actual dynamic measurement value upon measured temperature parameters.This article firstly deduce carrying capacity of verifying its correctness via several field trials.And when Current draw large changes wire, fast rise time commonly used models longer than 30 min, which common...
Triple Play is a technology that integrating various applications on telecommunication network, broadcast and the Internet. This can be implemented by wiring or wireless transmission. Therefore, in this paper, we firstly focuses exploring how to use existing power grid achieve via Power Line (TPPL) finally proves its feasibility experimental project conducted two buildings.
This paper presents a Ka-band bandpass filter based on the quarter-height pin gap waveguide which is proposed to enhance manufacturing efficiency and structure reliability by reducing height of traditional quarter air close zero. And provides wider stopband due reduced gap. The transmission line resonator are studied reveal advantages over half-height waveguide. A Ka band with 2% FBW 0.3 dB insertion loss designed simulated in CST verify design.
In this paper, an on-wafer S-parameter calibration method and a complete set of TRL kits are presented. Both the as well micro coaxial probes designed based on MEMS process. An eight-term error model is used to do process performed using EM full wave simulation software. Moreover, we design these micro-coaxial in order verify some experimental results from our previous work, that crossover effect between surface degraded measured rejection W band filter. As result, fit result well,...
Removed.
This paper presents an improved zero-gap waveguide structure with convex-shaped gap pins and zero height air gap, which is used to enhance the structural strength reduce assembly errors due variation. A fourth-order bullet-shaped circular filter designed fabricated validate proposed structure. To ease 3D printing difficulty of filter, cosine-shaped top utilized for self-supporting. Besides, a metallic ridge between adjacent cavities introduced electric coupling. The as well slots at bottom...