A5056806630- Microwave Engineering and Waveguides
- Radio Frequency Integrated Circuit Design
- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Photonic and Optical Devices
- Advanced Power Amplifier Design
- Millimeter-Wave Propagation and Modeling
- Electromagnetic Compatibility and Noise Suppression
- Semiconductor Quantum Structures and Devices
- Advancements in PLL and VCO Technologies
- Semiconductor Lasers and Optical Devices
- Acoustic Wave Resonator Technologies
- Superconducting and THz Device Technology
- Energy Harvesting in Wireless Networks
- Advanced Fiber Optic Sensors
- GaN-based semiconductor devices and materials
- Cardiovascular Health and Risk Factors
- Birth, Development, and Health
- Bluetooth and Wireless Communication Technologies
- Advanced Optical Sensing Technologies
- Semiconductor materials and devices
- Radar Systems and Signal Processing
- Power Line Inspection Robots
- Geophysical and Geoelectrical Methods
- Advanced Sensor and Control Systems
China Academy of Engineering Physics
2019-2025
University of Electronic Science and Technology of China
2010-2017
Nanjing University of Aeronautics and Astronautics
2017
In this letter, a <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">D</i> -band frequency octupler ( <inline-formula xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\times$</tex-math> </inline-formula> 8) with high harmonic suppression is presented in 0.13- notation="LaTeX">$\mu$</tex-math> m SiGe BiCMOS technology. To enhance the of even harmonics among harmonics, we have implemented and refined waveform shaping...
Abstract In this paper, on–off switching digitization of a W-band variable gain power amplifier (VGPA) with above 60 dB dynamic range is introduced for large-scale phased array. Digitization techniques modified stacking transistors partition are proposed to optimize configuration control sub-cells. By the techniques, radio frequency (VGA) could be highly customized both coarse and fine requirements instead using additional digital-to-analog converters tune overall bias. The designed VGA in...
In this letter, an on-chip bandpass filter (BPF) with ultrawide-stopband and high selectivity is designed manufactured by 2-μm gallium arsenide (GaAs) HBT technology. For the sake of rejection BPF, extra pair transmission zeros (TZs) locating at both sides passband produced introducing source-load coupling. Moreover, to improve a Pi-section circuit so that TZ obtained upper sidebands. The measurement results show bandwidth covers 2.4-4.3 GHz, while its insertion loss 2.05 dB 3.35 GHz....
A novel miniaturised dual‐band bandpass filter (BPF) based on defected split‐ring resonators (SRRs) and irregular stepped‐impedance (SIRs) is proposed. By applying SRRs embedded with eight combinations of three whole or broken grooves, which are formerly used for divination, the passband 2.35–2.52 GHz wideband harmonic suppression achieved WLAN applications. To create one more 5.09–5.3 GHz, SIRs etched inside SRRs. Finally, such a prototype designed fabricated dimension only 20 × mm 2 (0.27...
To investigate the association between body mass index (BMI), waist circumference (WC), waist-to-height ratio (WHtR), and incidence risk of type 2 diabetes mellitus (T2DM).In total, 20 194 participants ≥18 years old were selected randomly by cluster sampling from two township (town) county in Henan province July to August 2007 2008 investigation included questionnaires, anthropometric measurements, fasting plasma glucose, lipid profile examination performed at baseline; 17 236 enrolled this...
In this letter, a compact multifunctional 180° hybrid suitable for sub-harmonic I/Q mixers is proposed. To feed LO and RF signals at different frequencies distribute DC supply, the combines an out-of-phase dual balun, two in-phase power dividers based on T-junction coupled lines, four zero-ohm transmission lines (ZTL) into single passive component. Chip size, insertion loss, bandwidth can all be improved by reducing number of components cascaded in circuit. The proposed hybrid's footprint...
In this letter, a 75.1-151.4-GHz silicon power amplifier (PA) is devised with the help of sandwiched slab transformer, which proposed to increase tuning ranges coupling coefficient, quality factor, and conductivity. Being compact in size simple implementation enables it be well-applied multiple-way combination. Based on device, fabricated PA 130-nm germanium (SiGe) process demonstrates more than 14.1-dB gain at full W-band 77% D-band. From 75 117.7 GHz, its measured P <sub...
A novel compact microstrip dualband bandstop filter with resonator is proposed in this paper. The consists of a main line and five-order resonators. equivalent circuit model the extracted effects different design parameters on performance Bandstop are investigated. frequencies at 5.6 GHz 6.2 designed, simulated fabricated to verify method. Simulation measurement show generates two stopbands around 5.54 6.26 GHz.
A 0.14 THz wireless communication system, which can achieve real-time transmission of 30km sea surface with maximum bit rate 500Mbps, is developed. In the transmitter output power nearly 2 watts by cascading solid-state amplifier and vacuum electronic amplifier. modem variable transmitting designed from 10Mbps to 500Mbps. An experiment over 27 km carried out two 48 dBi antennas. The feasibility terahertz wave applied in long range well penetrability through complex changeable environment...
A compact ultra-wideband (UWB) bandpass filter with notched band is proposed using the microstrip/coplanar waveguide (CPW) composition structure and quarter wavelength (λ/4) embedded CPW resonator in this paper. Basic quasi-elliptic response multi-mode UWB operation are achieved through a λ/4 detached-mode (DMR) broadside-coupled transitions from microstrip to CPW. To avoid interferences passband, two identical resonators DMR employed obtain narrow band. further improve selectivity,...
In this letter, an improved balanced Colpitts voltage-controlled oscillator (VCO) with a collector-emitter cross-coupled capacitors is presented. The proposed structure can introduce more robust oscillation startup condition. noise-shifting technique used to enhance the loaded quality factor of tank, which improves phase noise in turn. addition, three-bit switches composed enhancement-mode high-electron mobility transistors (E-HEMTs) are utilized expand tuning range and reconfigurability...
This letter presents a modified Darlington-based (DB) class-C voltage-controlled oscillator (VCO) topology which achieves cooptimization of phase noise and figure merit (FoM) in GaAs technology. Both the Darlington pair shifting techniques are introduced to improve VCOs. Balanced differential architectures used absorb strength both Colpitts VCO with simple trick two cascaded stages core, elevates driving capability no degradation power efficiency. In addition, startup conditions capacitive...
This letter presents an improved UWB bandpass filter with sharp selectivity and a notch-band. Its fundamental structure is mainly based on half-wavelength resonator using asymmetric parallel-coupled line. A center-tapped short-stub connected at the symmetrical plane of filter. As result, two transmission zeros lower upper passband / stopband edges are obtained. Moreover, one open line introduced to achieve Measured results indicate that proposed has achieved bandwidth 110.6% from 3.05 10.6...
Abstract The technology, design procedure, and measurements of an ultra‐wideband (UWB) push–pull high‐performance complementary metal‐oxide semiconductor (CMOS) low‐noise amplifier (LNA) are presented in this letter. While the LNA exhibits commendable direct current (DC) power consumption, its operational bandwidth is often limited by inherent parasitic parameters transistors. To exploit transistors, a multipole‐tuning circuit that utilizes pole‐tuning inductors capacitors MOS to extend...
In this paper, a novel compact microstrip cross-coupled bandpass filters achieved by miniaturized stepped impedance resonators (SIR) is proposed. The SIR structure contributes to making the filter miniaturization and line helps have better selectivity. Compare with Chebyshev filter, quasi-elliptic function has This article introduced through design analysis, finally achieve working form 1.88GHz 1.98GHz, insertion loss less than 1.8dB within operating bandwidth, return more 15.9dB, two...