A triple-band miniaturized end-fire antenna based on the odd modes of spoof surface plasmonic polariton(SSPP)waveguide resonator is proposed in this paper.To meet the ever increasing demand for more communication chan...A triple-band miniaturized end-fire antenna based on the odd modes of spoof surface plasmonic polariton(SSPP)waveguide resonator is proposed in this paper.To meet the ever increasing demand for more communication channels and less antenna sizes,multi-band antennas are currently under intensive investigation.By a novel feeding method,three odd modes are excited on an SSPP waveguide resonator,which performs as an end-fire antenna operating at three bands,7.15-7.26 GHz,11.6-12.2 GHz and 13.5-13.64 GHz.It exhibits reasonably high and stable maximum gains of 5.26 dBi,7.97 dBi and 10.1 dBi and maximum efficiencies of 64%,92%and 98%at the three bands,respectively.Moreover,in the second band,the main beam angle shows a frequency dependence with a total scanning angle of 19°.The miniaturized triple-band antenna has a great potential in wireless communication systems,satellite communication and radar systems.展开更多
In artificial neural networks,data structures usually exist in the form of vectors,matrices,or higher-dimensional tensors.However,traditional electronic computing architectures are limited by the bottleneck of separat...In artificial neural networks,data structures usually exist in the form of vectors,matrices,or higher-dimensional tensors.However,traditional electronic computing architectures are limited by the bottleneck of separation of storage and computing,making it difficult to efficiently handle large-scale tensor operations.The research team has developed a photonic tensor processing unit based on a single microring resonator,which performs tensor convolution operations in multiple dimensions of time,wavelength,and microwave frequency by precisely adjusting the operating state of multi-wavelength lasers.This innovative design increases the photonic computing density to 34.04 TOPS/mm²,significantly surpassing the performance level of existing photonic computing chips.展开更多
基金supported in part by the Natural Science Foundation of Tianjin(No.19JCYBJC16100)the Tianjin Innovation and Entrepreneurship Training Program(No.202210060027)。
文摘A triple-band miniaturized end-fire antenna based on the odd modes of spoof surface plasmonic polariton(SSPP)waveguide resonator is proposed in this paper.To meet the ever increasing demand for more communication channels and less antenna sizes,multi-band antennas are currently under intensive investigation.By a novel feeding method,three odd modes are excited on an SSPP waveguide resonator,which performs as an end-fire antenna operating at three bands,7.15-7.26 GHz,11.6-12.2 GHz and 13.5-13.64 GHz.It exhibits reasonably high and stable maximum gains of 5.26 dBi,7.97 dBi and 10.1 dBi and maximum efficiencies of 64%,92%and 98%at the three bands,respectively.Moreover,in the second band,the main beam angle shows a frequency dependence with a total scanning angle of 19°.The miniaturized triple-band antenna has a great potential in wireless communication systems,satellite communication and radar systems.
文摘In artificial neural networks,data structures usually exist in the form of vectors,matrices,or higher-dimensional tensors.However,traditional electronic computing architectures are limited by the bottleneck of separation of storage and computing,making it difficult to efficiently handle large-scale tensor operations.The research team has developed a photonic tensor processing unit based on a single microring resonator,which performs tensor convolution operations in multiple dimensions of time,wavelength,and microwave frequency by precisely adjusting the operating state of multi-wavelength lasers.This innovative design increases the photonic computing density to 34.04 TOPS/mm²,significantly surpassing the performance level of existing photonic computing chips.
