Open AccessDesign of a compact ultra‐wideband MIMO antenna
Author(s) -
Youcheng Wang,
Yanjiao Yang,
Qingxi Chi,
Hucheng Pei
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0277
Subject(s) - antenna efficiency , monopole antenna , antenna measurement , acoustics , microstrip antenna , antenna factor , patch antenna , radiation pattern , antenna (radio) , wideband , physics , coaxial antenna , computer science , electronic engineering , electrical engineering , optics , telecommunications , engineering
A compact ultra‐wideband (UWB) multiple‐input multiple‐output (MIMO) antenna is presented. The MIMO antenna consists of four monopoles which are printed on FR4 substrate, whose impedance bandwidth is from 2 to 12 GHz, and the isolation of two adjacent antennas is less than−20 dB in mostly frequency band. The current distribution of the antenna is discussed by simulation, and the radiation characteristics of the antenna are improved by increasing the parasitic radiation patch and digging holes in the radiation patch. Four monopoles are placed with polarisation orthogonality, and the adjacent units are separated by slot to cut off the coupling current on the floor, thus effectively improving the isolation of the antenna.