- 标题
- 摘要
- 关键词
- 实验方案
- 产品
-
[IEEE 2018 IEEE International Conference on Computational Electromagnetics (ICCEM) - Chengdu, China (2018.3.26-2018.3.28)] 2018 IEEE International Conference on Computational Electromagnetics (ICCEM) - A Single Layer Broadband Reflectarray for Dual Polarizing Beam Splitting
摘要： A single layer broadband reflectarray is proposed, which is capable of generating independent reflect beams according to the polarization. The reflectarray element is composed of two sets of paralleled dipoles overlapping orthogonally on the surface of the substrate, and each set of the dipoles provide phase compensation for the certain polarization. Independent phase distributions can be achieved respectively on the same surface to perform separate beams with an included angle of 30 degrees between TE and TM polarizations. Operating as a polarizing reflect-beam splitter, a broadband performance (11.3-13.1 GHz) is acquired in simulation and the measurement result is exhibited.
关键词： parallel dipole,broadband,orthogonal polarization,single layer reflectarray,beam splitter
更新于2025-09-10 09:29:36
-
Investigation of CoSO4-based Ag nanofluids as spectral beam splitters for hybrid PV/T applications
摘要： Nano?uid can be used as an e?ective spectral beam splitter to enhance the performance of hybrid PV/T system. In this work, we innovatively developed CoSO4-based Ag nano?uid which might be utilized as ?uid optical ?lter for hybrid PV/T system with silicon concentrator (CPV) solar cell. Firstly, highly dispersed Ag/CoSO4 nano?uids with various concentrations were prepared. The results from the measured optical transmittance of the prepared nano?uids show that Ag/CoSO4 nano?uid has a strong absorption over a broader spectrum than that of water-based one. Subsequently, the e?ect of Ag nano?uids ?lters on the electrical performance of the silicon CPV cell was discussed. Ag/CoSO4 nano?uids produce lower short circuit current and thus lower electrical output than Ag/water nano?uids at the same mass fraction of Ag nanoparticles, whereas they yield higher stagnation temperature than Ag/water nano?uids. A theoretical model for optimizing the optical properties of the nano?uids ?lters and determining merit function (MF) was introduced to evaluate the ?ltering performance of Ag/CoSO4 nano?uids in PV/T systems. The results show that the MF value of PV/T system with Ag/CoSO4-2 nano?uid ?lter is greater than both that with a typical Ag-SiO2 (core-shell)/water nano?uid ?lter and with a Ag/water nano?uid ?lter. And the calculated MF values for PV/T systems with Ag/CoSO4 nano?uid ?lters reach a nearly constant value higher than 1.371 when the mass fraction of Ag nanoparticles contained in the Ag/CoSO4 nano?uid ranging from 24 ppm to 57 ppm. Peak MF value is achieved when the mass fraction of Ag nanoparticles is 37 ppm.
关键词： CoSO4-based,Spectral beam splitter,Solar energy,Silicon concentrator cell,Nano?uid,PV/T
更新于2025-09-10 09:29:36
-
FILTERED POWER SPLITTER USING MICROSTRIP SQUARE OPEN LOOP RESONATORS
摘要： A microstrip power splitter with band-pass responses is presented in this paper. The design is based on square open loop resonator topology. This ?ltered power splitter does not require quarter wavelength transformers and will result in a smaller size than a conventional Wilkinson power divider with integrated band-pass ?lter. It is a two-way equal power splitter with ?fth order band-pass ?lter characteristics. The power splitter is designed to have Chebyshev band-pass response function. A theoretical analytical circuit model will be presented. From the theoretical model, a microstrip ?ltered power splitter will be designed and simulated. The proposed ?ltered power splitter is small in size and reduces circuit complexity. The power splitter is simulated and measured, and the results are presented.
关键词： square open loop resonator,band-pass responses,Chebyshev band-pass response,Wilkinson power divider,microstrip power splitter
更新于2025-09-09 09:28:46
-
Broadband and high uniformity Y junction optical beam splitter with multimode tapered branch
摘要： A high uniformity and broad bandwidth Y junction optical beam splitter is proposed and analyzed in this paper based on silicon-on-insulator platform. By replacing the uniform branch with the multimode tapered branch, the bandwidth and the power uniformity of two output ports are improved prominently. Furthermore, the sensitivity to fabrication accuracy is reduced by widening the splitting angle. The simulation and the experimental results confirm that the bandwidth is larger than 100nm, the power uniformity of two output ports is enhanced 4 dB, whereas the insertion loss is less than 0.6dB and the return loss is larger than 26dB, respectively.
关键词： Multimode,Beam splitter,Broad bandwidth,High uniformity,Tapered branch
更新于2025-09-04 15:30:14
-
[IEEE 2018 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) - Split, Croatia (2018.9.13-2018.9.15)] 2018 26th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) - Optimization of the Optical Power Budget for Various WDM-PON Network Designs with Traffic Protection Securing
摘要： For the expansion of WDM-PON networks, it is necessary to have a detailed knowledge of the optical power budget in all its parts. This contribution shortly analyses various WDM-PON network designs with the traffic protection securing utilized only passive optical components in remote nodes. A main part is focused on the optimization of optical power budget possibilities for considered WDM-PON network designs. For evaluation of optical power budgets, a simulation model related to WDM-PON network designs and to interactions between various metropolitan and access parts in the optical distribution network is realized in the Matlab programming environment.
关键词： optical power budget,WDM-PON network design,power splitter,traffic protection,optical add-drop multiplexor
更新于2025-09-04 15:30:14