This paper first gives a definition for personal communication, then discusses some key problems to besolved in realizing PC and lastly gives some personal suggestions.
As we know, the future generation com-munication system is on the way to bedigitalized, integrated, broadband, intel-ligent, standardized and customized, andthe personal wireless communication systemmeets the demands....As we know, the future generation com-munication system is on the way to bedigitalized, integrated, broadband, intel-ligent, standardized and customized, andthe personal wireless communication systemmeets the demands.ZTE’s personal wireless communicationsystem (ZXPCS) is based on the personalhandset system (PHS) and deployed in morethan 110 cities in China. It is working well andwidely accepted by the carriers, which makesgreat contributions to the local economy and展开更多
With the rapid advancement of information technology,electromagnetic radiation has become deeply integrated into nearly every aspect of modern life,from personal communication and industrial manufacturing to aerospace...With the rapid advancement of information technology,electromagnetic radiation has become deeply integrated into nearly every aspect of modern life,from personal communication and industrial manufacturing to aerospace and national defense infrastructures.As the electromagnetic environment has become increasingly complex and congested,electromagnetic waves have not only brought unprecedented convenience but also introduced serious challenges,including electromagnetic interference,radiation pollution,and information insecurity.Consequently,the rational design and development of microwave absorption materials(MAMs)are critically important for protecting human health,mitigating electromagnetic pollution,and strengthening information security in the information age.展开更多
About references。References follow the Vancouver style with DOIs where available.Number references consecutively in the order they appear in the text,using superscript Arabic numerals after punctuation.Abbreviate jou...About references。References follow the Vancouver style with DOIs where available.Number references consecutively in the order they appear in the text,using superscript Arabic numerals after punctuation.Abbreviate journal titles per Index Medicus.List up to 6 authors;for more,use“et al.”Avoid citing abstracts,unpublished observations,or personal communications unless essential.展开更多
We design a compact triplexer based on two-dimensional (2D) hexagonal lattice photonic crystals (PCs). A folded directional coupler (FDC) is introduced in the triplexer beside the point-defect micro-cavities and...We design a compact triplexer based on two-dimensional (2D) hexagonal lattice photonic crystals (PCs). A folded directional coupler (FDC) is introduced in the triplexer beside the point-defect micro-cavities and line-defect waveguides. Because of the reflection feedback of the FDC, high channel drop efficiency can be realized and a compact size with the order of micrometers can be maintained. The proposed device is analyzed using the plane wave expansion method, and its transmission characteristics are calculated using the finite-difference time-domain method. The footprint of the triplexer is about 12 9 μm, and its extinction ratios are less than -20 dB for 1310 nm, approximately -20 dB for 1490 nm, and under -40 dB for 1550 nm, making it a potentially essential device in future fiber-to-the-home networks.展开更多
摘要This paper first gives a definition for personal communication, then discusses some key problems to besolved in realizing PC and lastly gives some personal suggestions.
摘要As we know, the future generation com-munication system is on the way to bedigitalized, integrated, broadband, intel-ligent, standardized and customized, andthe personal wireless communication systemmeets the demands.ZTE’s personal wireless communicationsystem (ZXPCS) is based on the personalhandset system (PHS) and deployed in morethan 110 cities in China. It is working well andwidely accepted by the carriers, which makesgreat contributions to the local economy and
摘要With the rapid advancement of information technology,electromagnetic radiation has become deeply integrated into nearly every aspect of modern life,from personal communication and industrial manufacturing to aerospace and national defense infrastructures.As the electromagnetic environment has become increasingly complex and congested,electromagnetic waves have not only brought unprecedented convenience but also introduced serious challenges,including electromagnetic interference,radiation pollution,and information insecurity.Consequently,the rational design and development of microwave absorption materials(MAMs)are critically important for protecting human health,mitigating electromagnetic pollution,and strengthening information security in the information age.
摘要About references。References follow the Vancouver style with DOIs where available.Number references consecutively in the order they appear in the text,using superscript Arabic numerals after punctuation.Abbreviate journal titles per Index Medicus.List up to 6 authors;for more,use“et al.”Avoid citing abstracts,unpublished observations,or personal communications unless essential.
基金supported by the National Natural Science Foundation of China (Nos. 60978010, 60907032, and 60825103)the Natural Science Foundation of Zhejiang Province (No. Y1090169)+1 种基金the Foundation of Zhejiang University of Technology (No. 0901103012408)the Open Fund of the State Key Laboratory of Advanced Optical Communication Systems and Networks, China (No. 2008sh07)
摘要We design a compact triplexer based on two-dimensional (2D) hexagonal lattice photonic crystals (PCs). A folded directional coupler (FDC) is introduced in the triplexer beside the point-defect micro-cavities and line-defect waveguides. Because of the reflection feedback of the FDC, high channel drop efficiency can be realized and a compact size with the order of micrometers can be maintained. The proposed device is analyzed using the plane wave expansion method, and its transmission characteristics are calculated using the finite-difference time-domain method. The footprint of the triplexer is about 12 9 μm, and its extinction ratios are less than -20 dB for 1310 nm, approximately -20 dB for 1490 nm, and under -40 dB for 1550 nm, making it a potentially essential device in future fiber-to-the-home networks.