A5026895229- Antenna Design and Analysis
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Microwave Engineering and Waveguides
- Speech and Audio Processing
- Energy Harvesting in Wireless Networks
- Radio Astronomy Observations and Technology
- Full-Duplex Wireless Communications
- Direction-of-Arrival Estimation Techniques
- Digital Media Forensic Detection
- Liquid Crystal Research Advancements
- Plant Reproductive Biology
- Optical Network Technologies
- Land Use and Ecosystem Services
- Urban Green Space and Health
- RFID technology advancements
- Electromagnetic Compatibility and Measurements
- Radar Systems and Signal Processing
- PAPR reduction in OFDM
- Diverse Aspects of Tourism Research
- Optical Wireless Communication Technologies
- Radiation Effects in Electronics
- Wireless Signal Modulation Classification
- Advanced Photonic Communication Systems
Nantong University
2021-2024
This study proposes a design of low-profile ultra wide-band cylindrical antenna array with plus/minus 45-degree dual polarization. The proposed compact produces an omnidirectional radiation pattern in the azimuth plane to cover all directions. It consists <inline-formula> <tex-math notation="LaTeX">$20\times 4$ </tex-math></inline-formula> dual-polarized elements within diameter 131 mm and height 116 mm. are tightly coupled slant-polarized wideband dipole antennas, hence, rotational symmetry...
Online calibration is desired in antenna arrays of ultrawide bandwidth. This study proposes a time domain method based on the simultaneous perturbation algorithm. Two objective functions were established: power received signal at array output; or combination and correlation coefficient between output target signal. For both criteria, convergence settings require only two measurements each iteration. One advantage that entire operation for performed domain. achieved by resolving effects...
The limitations of conventional sensors have made array antennas increasingly crucial for gathering information and communication applications in intelligent transportation systems. Compact cylindrical arrays are particularly favored their ability to achieve azimuth angle scanning. However, the substantial mutual coupling effect between elements on curved surfaces its implication these remain unclear, which is a key factor consider when such used multibeam applications. This study...
Radio-frequency identification (RFID) tags are widely used in the food supply chain where they can be to hold data of tagged objects. They also provide information related quality and safety object. This achieved by analyzing RF signals emitted tag which couples with objects, hence acquire useful that paper investigates correlation between radiated from characteristics It focuses on mutual coupling an array, particular, orthogonal polarization configuration, shows more extracted array...
A flexible coplanar waveguide (CPW) design is presented suitable for feeding planar antenna with a balanced structure. Two features are provided by the design, transition from balance on side to unbalance receiver side; transformation of characteristic input impedance value standard load. It essential CPW be bended fit purposes hence effect bending transmission performance and method feed investigated. The common mode propagation due inserted feedline observed solution eliminate auxiliary...
Abstract Antenna arrays have gained significant interest in millimetre‐wave communication systems as an enabling technology to achieve higher capacity and mitigate the high propagation loss. Such with a large bandwidth need be efficiently calibrated maximise their performance. An antenna array calibration method based on stochastic approximation algorithm simultaneous perturbation has been developed procedures implement it both frequency time domains presented. The approaches define...
The limitations of conventional sensors have made phased array antennas increasingly crucial for gathering information and communication applications in intelligent transportation systems. Compact cylindrical arrays, particular, are favored their ability to achieve azimuth angle scan. However, the substantial mutual coupling effect between elements on curved surfaces its implication these arrays remains unclear, which is a factor consider when such used multibeam applications. This study...
Planar antenna arrays of a balanced structure are great importance in many applications due to their features including low-profile, wideband and high polarisation purity. However, feeding such antennas adds complexity terms manufacturing reduces the performance production common mode propagation. A method for using coplanar waveguide on thin substrate is proposed. Not only does it terminate with single-ended feed but also enables impedance transformation. The design was an attempt towards...
Abstract Planar antenna arrays of a balanced structure are great importance in many applications due to their features including low‐profile, wideband, and high polarisation purity. However, feeding such antennas adds complexity terms manufacturing reduces the performance production common mode propagation. A method for using coplanar waveguide on thin substrate is proposed. Not only does it terminate with single‐ended feed but also enables impedance transformation. The design was an attempt...
Reduction of calibration points in frequency be-comes important as wideband arrays are increasingly used various applications. Determination direction arrival (DoA) the incoming signal can work an effective instrument to verify performance on antenna arrays. We employed a software-defined radio (SDR) system, which supports multiple channels, measure difference phases and amplitudes among receiving channels array, co-efficients were derived accordingly. Multiple classification (MUSIC)...
The use of metamaterials to obtain a wideband wide angle impedance matching (WAIM) for compact phased array interconnected crossed rings is investigated. metamaterial layer above the planar formed by conductive disks in contrast conventional multilayer homogeneous dielectric structure. equivalent circuit enhance antenna design derived based on hybrid technique. values components represent given. response from verified using full-wave numerical simulations results show effectiveness method...
Nematic liquid crystals are anisotropic dielectrics whose properties could be controlled by surface anchoring, exter-nal electric or magnetic fields. A typical design method of tunable inverted microstrip line phase shifter based on crystal for microwave application is investigated. Two designs the proposed were introduced with center operation frequency 10 GHz and 20 respectively. The prototype operating at 20GHz manufactured. dielectric anisotropy used 0.45. differential shift 27.2° was...