English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

An eight-element multiple input multiple output (MIMO) antenna assembly is designed for Ultra-Wideband (UWB) applications. The antenna configuration is based on a peculiar arrangement of the radiating elements. A defected microstrip structure (DMS) is also introduced on the feedlines. The use of a novel technique, the so-called ports-shift, is here discussed. In the proposed antenna, a protruded ground branch structure is employed in combination of three parasitic stubs so as to enhance isolation and impedance matching over the UWB frequency band, respectively. The results show that the presented antenna exhibits a good impedance matching (Sii) which is about -10 dB with a high mutual coupling (Sij) 15 dB, and envelope correlation coefficients (ECC) lower than 0.15. The antenna also exhibits a good diversity gain (DG) of about 9.5 dB, a good efficiency that varied between 56% and 91%, and a total active reflection coefficient (TARC) of less than -20 dB over the entire UWB frequency band. Which makes it a good candidate for UWB applications. INDEX TERMS Diversity techniques, multiple input multiple output (MIMO), mutual coupling, ultra-

Isolation Enhancement Using a Hybrid Technique in an Eight-Element UWB MIMO Antenna Design