A5012762346- Microwave Engineering and Waveguides
- Radio Frequency Integrated Circuit Design
- Antenna Design and Analysis
- Advanced Power Amplifier Design
- Particle Accelerators and Free-Electron Lasers
- VLSI and Analog Circuit Testing
- Full-Duplex Wireless Communications
- Power Transformer Diagnostics and Insulation
- Advanced Antenna and Metasurface Technologies
- Semiconductor Quantum Structures and Devices
- Power Line Communications and Noise
- Wireless Body Area Networks
- Advancements in Semiconductor Devices and Circuit Design
- Electromagnetic Compatibility and Noise Suppression
- High voltage insulation and dielectric phenomena
- Semiconductor materials and devices
- Particle accelerators and beam dynamics
- Antenna Design and Optimization
- Photonic and Optical Devices
- Millimeter-Wave Propagation and Modeling
- Non-Destructive Testing Techniques
- Superconducting Materials and Applications
Southeast University
2021-2024
State Key Laboratory of Millimeter Waves
2024
A time-division duplex (TDD) transmit/receive (T/R) millimeter-wave (mm-wave) front-end in 0.13- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\mu \text{m}$ </tex-math></inline-formula> SiGe BiCMOS for fifth generation (5G) is presented. The composed of a power amplifier (PA), low noise (LNA), and single-pole double-throw (SPDT) switch. At mm-wave bands, the traditional SPDT switch limits output transmit...
This brief presents an ultra-wideband (UWB) low-noise amplifier (LNA) with a 3-dB gain bandwidth (BW) from 1 to 27 GHz (185.7% fractional BW). The resistive-feedback and inductive-peaking techniques are employed enlarge the bandwidth. Moreover, inductive-degeneration technique π-matching network utilized realize wideband noise input impedance matching simultaneously. LNA is fabricated in 0.13-μm SiGe BiCMOS technology. It achieves peak of dB minimum figure (NF) 1.4 at room temperature....
A 300-GHz modified Gilbert upconverter with high output power and wide bandwidth (BW) in a 130-nm SiGe BiCMOS process is presented. low-impedance transmission line (low- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$Z_{0}$ </tex-math></inline-formula> TL) introduced to achieve impedance matching between the mixer core RF/LO balun. This low-loss low- TL eliminates need for lossy capacitors ground at...
This brief proposes a variable gain power amplifier (VG-PA) with stable linearity for n257/n258 frequency band applications. A switched-capacitor array is proposed in the cascode (CC) circuit to control while maintaining linearity. compensation inductor introduced between common-emitter (CE) and common-base (CB) transistors suppress phase variation. For proof of concept, VG-PA was fabricated 0.13- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
This article proposes a reconfigurable 90 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$^{\circ}$</tex-math> </inline-formula> coupler with an ultrawide bandwidth (97%) and ultracompact chip size. To provide cost-effective solution that simultaneously achieves broadband high performance on-chip integration, this design incorporates 3-bit switch array into spiral stacked coupler. Fabricated using 0.13-...
In this article, a single-board integrated millimeter-wave (mm-Wave) asymmetric full-digital beamforming (AFDBF) array is developed for beyond-fifth-generation (B5G) and sixth-generation (6G) communications. The proposed effectively addresses the challenge of arranging large number ports in by designing vertical connections three-dimensional space successfully integrating transmitting (Tx) receiving (Rx) arrays independently single board. Unlike traditional symmetric array, composed an 8 ×...
The MuCool program undertaken by the US Neutrino Factory and Muon Collider Collaboration is to study behavior of muon ionization cooling channel components. A single superconducting coupling solenoid magnet necessary pursue research development work on performance high gradient, large size RF cavities immersed in magnetic field, which one main challenges practical realization muons. be built using commercial copper based niobium titanium conductors cooled two cryo-coolers with each capacity...