A5032167562- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Metamaterials and Metasurfaces Applications
- Photonic and Optical Devices
- Silicon and Solar Cell Technologies
- Advanced Materials and Mechanics
- Radio Frequency Integrated Circuit Design
- Thin-Film Transistor Technologies
- Silicon Nanostructures and Photoluminescence
- Space Satellite Systems and Control
- Electromagnetic Compatibility and Noise Suppression
- Air Quality and Health Impacts
- GNSS positioning and interference
- Nanowire Synthesis and Applications
- Climate Change and Health Impacts
- RFID technology advancements
- Geophysics and Gravity Measurements
- Millimeter-Wave Propagation and Modeling
- COVID-19 impact on air quality
- Hydrology and Watershed Management Studies
- Full-Duplex Wireless Communications
- Planetary Science and Exploration
- Inertial Sensor and Navigation
- Geology and Paleoclimatology Research
Shanghai Municipal Center For Disease Control Prevention
2024
Beijing University of Posts and Telecommunications
2021-2022
Nanjing University of Science and Technology
2017-2019
A novel single-layer element consisting of a rectangular patch embedded with pair inverted L-shaped slots is proposed for broadband reflectarray antennas. The dimensions all elements are identical, and the phase variation achieved by adjusting length etched within patches. By this means, abrupt geometry changes adjacent in traditional reflectarrays can be avoided. unit cell optimized to offer linear response sufficient range. Based on element, 529-element offset-fed centered at 10 GHz 0.3λ...
A novel stepped-impedance coupled-line dual-mode resonator (SICLDMR) is presented and analyzed in this brief. The a closed ring structure, constructed by two coupled lines with different impedances. even- odd-mode resonance frequencies of SICLDMR are created due to the effective dielectric constants modes. Based on proposed resonator, simple bandpass filter (BPF) designed adding symmetric open-stub feeding structures. For demonstration, narrowband BPF operating at 35 GHz simulated,...
In this brief, input-/two-port all-frequency absorptive dual-band bandpass filters (BPFs) based on complementary duplexer architecture are proposed for the first time. The design consists of a simple coupled-line (CL) BPF section and auxiliary bandstop filter (BSF) sections with resistively terminated stubs. can transmit spectral energy in two passbands good in-band filtering response, while out-of-band RF-signal be absorbed by BSF sections, which indicates absorption from dc. impedance stub...
A broadband single-layer reflectarray antenna comprising circular ring elements dented with sectorial slits is presented. The sizes of rings are fixed and equal for all elements, while the variation reflected phase obtained by varying lengths within rings. In this arrangement, rapid geometric variations among neighboring encountered in conventional antennas can be prevented. proposed element yield a linear together high magnitude important parameters examined to gain an insight into its...
Many studies suggested that short-term exposure to fine particulate matter (PM2.5) and coarse (PM2.5–10) was linked elevated risk of cerebrovascular disease. However, little is known about the potentially differential effects PM2.5 PM2.5–10 on various types We collected individual death records for all residents in Shanghai, China from 2005 2021. Residential daily air pollution data were predicted a satellite model. The associations between matters (PM) mortality investigated by an...
In this paper, a simple high-selectivity wideband bandpass filter based on novel π-shaped coupled-line structure is introduced. The presented realizes wide bandwidth, excellent passband selectivity and good stopband suppression by using two coupled lines with diagonal open-circuited ports three cascaded ports. design theoretical analysis the complete equation derivation are provided in detail. Furthermore, prototype 3-dB fractional bandwidth of 50.9% simulated, fabricated, measured....
A broadband folded reflectarray using single-layer three-dipole elements is proposed. The antenna consists of a feed horn, lower reflectarray, and an upper polarizer. element employed as the unit cell to realize performance reflectarray. design carried out at 10 GHz constituted 1089 on 408×408 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> aperture. proposed features behavior with low-profile configuration. simulated results show...
A wideband reflectarray antenna consisting of single-layer dipole element attached with T-shaped stubs is proposed. By varying the lengths stubs, unit cell can provide a linear phase curve covering about 420°. Critical design parameters are analyzed to understand its operating mechanism. Using this novel type cells, 441 25° offset-fed grid spacing λ/3 at 10 GHz designed, fabricated, and measured. The experimental results show that proposed achieve 1-dB gain bandwidth 24% 1.5-dB 37%. In...
A broadband high-efficiency reflectarray antenna using single-layer dipole element loaded with T-shaped stubs is proposed. The unit cell composed of a two attached to each end the dipole. linear phase response coverage about 420°is obtained by proposed element. An offset-fed comprising 441 elements designed, fabricated, and measured. measured gain 25.7 dBi at design frequency 10 GHz, corresponding an aperture efficiency 66.6%. In addition, wide 1-dB bandwidth 24% achieved.
A compact mm-wave bandpass filter (BPF) based on the transversal signal interference concept in integrated passive-device (IPD) technology is proposed and designed this paper. The structure transmits signals through two paths. In Path 1, a $\pi$-shaped consisting of coupled lines, shorted stubs, transmission line achieved. 2 composed cascade lines lines. By using IPD technology, center frequency BPF set to 28 GHz. wideband with multiple poles zeros implemented. final electromagnetic (EM)...
A novel high-order-mode cavity-backed array antenna using metasurfaces with linear-polarization is proposed, where a SIW cavity TE220 mode used as low-loss network to excite 2×2 array, meanwhile, complemental boundaries are loaded further increase gain for very high aperture efficiency. As results, linearly polarized can achieve of 11.52dBi and efficiency 107%. Compared traditional patch arrays, the gains efficiencies significantly improved.
This paper presents a simple and low-cost beam steering method for low-profile folded reflectarrays. The scanning is realized by rotating metasurfaces placed in close proximity to the antenna. Contrary electronically approaches where active devices are required, this employs completely passive just above antenna steer consequently resulting configuration. These features together with advantages of reflectarrays make it competent candidate SATCOM applications.