A5101759041- Microwave Engineering and Waveguides
- Antenna Design and Analysis
- Millimeter-Wave Propagation and Modeling
- Advanced Antenna and Metasurface Technologies
- Photonic and Optical Devices
- Innovative Microfluidic and Catalytic Techniques Innovation
- Electromagnetic Compatibility and Noise Suppression
- Energy Harvesting in Wireless Networks
- Process Optimization and Integration
Nanjing University
2024
Shenzhen University
2019-2020
This article reports on a new class of broadband and fully 3-D printed E-plane coax-to-waveguide transition monolithically waveguide magic-T based the transition. The is constructed by section air-filled rectangular coaxial transmission line (TL) that placed between two probe transitions. It used to interconnect magic-T's sum port T-junction. incorporation reorients all arms into E-plane. Some X-band prototypes proposed are designed implemented. Polymer-based additive manufacturing copper...
A new class of slotted spherical antenna is proposed in this letter. The composed a single air-filled high-quality-factor resonator that properly on the cavity shell, and fed by rectangular waveguide other side slots, radiating TM101 TM211 modes. three-slot prototype operating at X- Ku-bands designed implemented as proof concept. Good directional radiation patterns are achieved both bands optimizing dimensions three circumferential slots. additively monolithically manufactured incorporating...
In this paper, a three-dimensional (3-D) printed spherical antenna with bandwidth enhancement under the operation of TM101 and TM211 modes is presented. The started from metallized cavity rectangular feed waveguide. Then, some slots are suitably introduced on its sidewall. With help these slots, two resonant (TM101 TM211) can be excited simultaneously merged each other, resulting in wideband radiation characteristic resonances. An prototype operating at X Ku bands designed implemented as...
This paper proposes a compact dual-band printed quadrifilar helix antenna (QHA) operating at GPS-L1 (1575 ± 2 MHz) and L2 (1228 bands. To generate the dual bands, two interconnected lines with unequal lengths are introduced as radiating element. The closely allocated radiators resonate in quarter-wavelength mode, which significantly miniaturizes antenna's size. Four shunt capacitors loaded near ports to manipulate mutual coupling between each radiators, so that satisfactory matching...
Ad hoc teamwork is a crucial challenge that aims to design an agent capable of effective collaboration with teammates employing diverse strategies without prior coordination. However, current Population-Based Training (PBT) approaches train the ad through interaction from scratch, which suffer low efficiency. We introduce Multi-Expert Distillation (MED), novel approach directly distills modeling across-episodic sequences. Experiments show our algorithm achieves more efficient and stable...
A dual-band high-gain slotted spherical antenna radiator is designed in this paper. The operating at X and Ku bands using the fundamental TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">101</sub> mode spurious xmlns:xlink="http://www.w3.org/1999/xlink">211</sub> of employed resonator. radiation achieved by interrupting surface current radiated modes with three slots that are symmetrically opened on sidewall cavity. Good patterns can be two...
A wideband slotted spherical waveguide antenna based on the multi-mode concept is presented. The proposed design starts from a metallized cavity fed by rectangular waveguide. Then, two groups of slots are symmetrically cut shell. By suitably choosing slot dimensions and locations, four radiation modes can be excited in single radiator merged with each other, resulting characteristic. To verify this, prototype designed fabricated using stereolithography apparatus to achieve light weight. As...
A simple and planer quarter-wavelength topology is presented in this paper for the design of notched-wideband bandpass filters (NWB BPFs) with multipole poles zeros. The proposed started from a pair T-shaped resonators, which owns three four Then, parallel coupled-lines (PCLs) are introduced. With aid added parts, extra two zeros can be As such, NWB BPF seven six realized. To validate this, prototype designed measured. measured results good agreement simulated one, effective BPFs verified.