In this paper,a novel wideband 8-element multiple-input and multiple-output(MIMO)antenna based on Booker’s relation is proposed for the fifth generation(5G)handset applications.The 8 antenna elements are arranged sym...In this paper,a novel wideband 8-element multiple-input and multiple-output(MIMO)antenna based on Booker’s relation is proposed for the fifth generation(5G)handset applications.The 8 antenna elements are arranged symmetrically along the two longer vertical side-edge frames of the handset.Each antenna element is composed of a monopole and a slot radiation structure,in which wideband characteristic covering 3140-5620MHz can be obtained.Note that the L-shaped monopole and the slot can be deemed as complementary counterparts approximatively.Furthermore,the Z-parameter of the proposed wideband antenna element is equivalent to the shunt impedance of monopole as well as slot radiator.Based on Booker’s relation,the wideband input impedance characteristic is therein achieved compared with conventional wideband technique such as multiresonance.Four L-shaped stubs as well as two slots etched on the ground plane are utilized to achieve acceptable isolation performance better than 13 dB,with total efficiency higher than 60%and envelope correlation coefficients(ECCs)lower than 0.1.The proposed antenna scheme can be a good candidate for 5G handset applications with the advantages of wideband,simple structure,high efficiency,and acceptable isolation performance.Also,the scheme might be a rewarding attempt to promote the Booker’s relation in the application of 5G terminal MIMO antenna designs.展开更多
Both Booker T.Washington and W.E.B.Du Bois are the prominent thinkers who provide inspirations for African Americans on their way to strive for political,economic and social emancipations.Their ideas arise from the sp...Both Booker T.Washington and W.E.B.Du Bois are the prominent thinkers who provide inspirations for African Americans on their way to strive for political,economic and social emancipations.Their ideas arise from the specific determinants of the historical period where they respectively live.People are often more aware of and interested in the differences and even conflicts of their propositions.In essence,thinking of the latter is a logic continuity of that of the former.Their ideas share a logic commonality,which is that they are conservative in the base,and reformist in the implementing steps.展开更多
基金supported in part by Natural Science Foundation of Fujian Province(2021J05178)in part by the Scientific Research Foundation of Jimei University(ZQ2021001).
文摘In this paper,a novel wideband 8-element multiple-input and multiple-output(MIMO)antenna based on Booker’s relation is proposed for the fifth generation(5G)handset applications.The 8 antenna elements are arranged symmetrically along the two longer vertical side-edge frames of the handset.Each antenna element is composed of a monopole and a slot radiation structure,in which wideband characteristic covering 3140-5620MHz can be obtained.Note that the L-shaped monopole and the slot can be deemed as complementary counterparts approximatively.Furthermore,the Z-parameter of the proposed wideband antenna element is equivalent to the shunt impedance of monopole as well as slot radiator.Based on Booker’s relation,the wideband input impedance characteristic is therein achieved compared with conventional wideband technique such as multiresonance.Four L-shaped stubs as well as two slots etched on the ground plane are utilized to achieve acceptable isolation performance better than 13 dB,with total efficiency higher than 60%and envelope correlation coefficients(ECCs)lower than 0.1.The proposed antenna scheme can be a good candidate for 5G handset applications with the advantages of wideband,simple structure,high efficiency,and acceptable isolation performance.Also,the scheme might be a rewarding attempt to promote the Booker’s relation in the application of 5G terminal MIMO antenna designs.
文摘Both Booker T.Washington and W.E.B.Du Bois are the prominent thinkers who provide inspirations for African Americans on their way to strive for political,economic and social emancipations.Their ideas arise from the specific determinants of the historical period where they respectively live.People are often more aware of and interested in the differences and even conflicts of their propositions.In essence,thinking of the latter is a logic continuity of that of the former.Their ideas share a logic commonality,which is that they are conservative in the base,and reformist in the implementing steps.
