Wideband  MIMO  handset antenna design based on theory of characteristic modes | Zendy

Li Ke | Zendy; Shi Yan | Zendy

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Wideband MIMO handset antenna design based on theory of characteristic modes

Author(s) -

Li Ke,

Shi Yan

Publication year - 2018

Publication title -

international journal of rf and microwave computer‐aided engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.335

H-Index - 39

eISSN - 1099-047X

pISSN - 1096-4290

DOI - 10.1002/mmce.21217

Subject(s) - wideband , mimo , handset , antenna (radio) , physics , acoustics , electronic engineering , frequency band , engineering , electrical engineering , beamforming

A novel multi‐input multi‐output (MIMO) antenna array in a compact mobile handset has been designed to operate in a wide frequency band below 1 GHz. Based on theory of characteristic modes (TCM), a pair of parallel folding metal strips is introduced to make a chassis generate two orthogonal eigenmodes with wideband resonant characteristics. A meander line‐loaded monopole structure is employed to excite higher frequency eigenmode, and a parallel lumped L‐C structure is used to excite lower frequency eigenmode. With two proposed feeding structures, the proposed MIMO antenna array can operate in a wide frequency band covering 745‐960 MHz with an envelope correlation coefficient (ECC) <0.12. Simulation and measurement results demonstrate that the proposed MIMO antenna array has total efficiency better than 40% over the whole operating band.

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