A5029887960- Antenna Design and Optimization
- Antenna Design and Analysis
- Energy Harvesting in Wireless Networks
- Electromagnetic Compatibility and Measurements
- Radio Astronomy Observations and Technology
- Structural Analysis and Optimization
- Advanced Antenna and Metasurface Technologies
- Wireless Power Transfer Systems
- Advanced SAR Imaging Techniques
- Microwave Engineering and Waveguides
- Electromagnetic Scattering and Analysis
Xidian University
2019-2025
National University of Singapore
2025
Phased arrays have been widely used in microwave power transmission. The efficiency of rectenna is closely related to the received density. Therefore, it necessary accurately analyze radiation performance transmitting array order achieve high-efficiency And meet long-distance and transmission requirements, needs characteristics large electricity sizes. direct numerical analysis method entire will bring huge cost computing time storage space. Subarray extrapolation a reasonably account for...
When airborne early warning radar performs beam scanning, there are often various requirements for the shape of and sidelobe levels. In this letter, design elevation beamforming conformal required its detection analyzed. The optimization introduces an amplitude control variable into modified Bernstein polynomial to obtain lower levels arrays, which is useful detection. Particle swarm used optimize parameters with phase. results demonstrate that excitation optimized by method phase randomly...
In this letter, a simplified model is proposed to calculate the efficiency loss of aperture illumination with phase errors for microwave power transmission (MPT) quickly. Due influence environmental factors, antenna surface will deform and be caused. Then, we give calculation (PTE) in Fresnel region. While, introduction errors, computational becomes complicated. Inspired by derivation process ideal efficiency, present under errors. particular, more given small A set representative numerical...
An array conformal on an aircraft is affected by fixed blockage the aircraft. This will cause increase in sidelobe level and a distortion of pattern, which considerably affects target detection. The traditional strategy treats antennas as whole system, leading to increased difficulty analysis research mechanism blockage. Thus, this article presents novel method. On basis Fresnel zone theory electromagnetic propagation, main shadow region propagation found. Then, divided into small scattering...
This study presents a fast compensation method for deformed conformal arrays that considers the mutual coupling (MC) effect. The least squares error (LSE) and Fourier transform (FFT) are often used as typical full-space numerical methods arrays. LSE can be applied to arbitrary with different deformations. Unfortunately, approach necessitates complex calculations. FFT of structural deformation uniform slight loss accuracy compared LSE, but it is not suitable nonuniform distribution elements’...
A simple pattern analysis method is presented for conformal antenna arrays, considering mutual coupling effects based on the characteristic modes of isolated elements. There are many methods to analyze performance but they seldom provide a clear insight into mechanism. Thus, overall array calculated from elements and coordinate transformation, which different traditional modal entire array. And radiation field given. The matrix depends structural parameters relative pose used characterize...
An analytical model is proposed to calculate the performance on beam collecting efficiency (BCE) of transmitting arrays with excitation errors for microwave power transmission (MPT). Due inconsistent output amplifiers and uncertainty joint loss radio frequency (RF) device, small perturbations will be brought into amplitudes phases, which decrease BCE. This involves use a Taylor series expansion account in errors. The mathematical between statistical information BCE directly established. To...