【摘 要】
:
An isotropic electromagnetic (EM) lens based on Huygens\' metasurface is proposed for 28.0 GHz lens antenna design.The lens consists of a series of non-resonant and subwavelength metallic patterns etched on both sides of an ultrathin dielectric substrat
【机 构】
:
School of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Na
论文部分内容阅读
An isotropic electromagnetic (EM) lens based on Huygens\' metasurface is proposed for 28.0 GHz lens antenna design.The lens consists of a series of non-resonant and subwavelength metallic patterns etched on both sides of an ultrathin dielectric substrate.Both electric and magnetic responses are introduced to realize desired abrupt phase change and high-efficiency transmission for the secondary wavelets in the incident wavefront.Then,a substrate-integrated waveguide (SIW) fed patch antenna is combined with the lens as the primary feed to form a low-profile lens antenna system.The simulated and measured results coincide with each other,and demonstrate that the prototype realizes 8.8 dB~12.6 dB gain increment and low side-lobe levels over the bandwidth of 26.7 GHz~30.0 GHz.The novel design leads to a low-profile,light weight,and low-cost antenna solution in a wireless communication system.
其他文献
Dynamic geometry software,as a piece of computer-assisted instruction (CAI) software,is closely and deeply associated with mathematics,and is widely applied to mathematics teaching activities in primary and secondary schools.Meanwhile,web technology also
The finite-difference time-domain (FDTD) method is extensively applied in dealing with time-domain microwave imaging(MWI) problems since it is robust,fast,simple to implement.However,the FDTD method is an explicit time-stepping technique,due to the constr
One-bit compressed sensing (CS) technology reconstructs the sparse signal when the available measurements are reduced to only their sign-bit.It is well known that CS reconstruction should know the measurement matrix exactly to obtain a correct result.Howe
Software module clustering is to divide the complex software system into many subsystems to enhance the intelligibility and maintainability of software systems.To increase convergence speed and optimize clustering solution,density PSO-based (DPSO) softwar
Text classification means to assign a document to one or more classes or categories according to content.Text classification provides convenience for users to obtain data.Because of the polysemy of text data,multi-label classification can handle text data
This paper provides a formalized definition of the application problem of compound condition query (CCQ) and a formal method of applying requirements elicitation based on trace information space derived from trace algebra.With the formalized process of so
This article puts forward a novel smooth rotated hyperbola model for support vector machine (RHSSVM) for classification.As is well known,the support vector machine (SVM) is based on statistical learning theory(SLT) and performs its high precision on data
In order to overcome the poor generalization ability and low accuracy of traditional network traffic prediction methods,a prediction method based on improved artificial bee colony (ABC) algorithm optimized error minimized extreme learning machine (EM-ELM)
The explosive increase of smart devices and mobile traffic results in heavy burden on backhaul and core network,intolerable network latency and degraded service to the end-users.As a complement to core network,edge network contributes to relieving network
The underflow concentration prediction of deep-cone thickener is a difficult problem in paste filling.The existing prediction model only determines the influence of some parameters on the underflow concentration,but lacks a prediction model that comprehen