Abstract
A novel compact Ultra Wide Band (UWB) Multiple Input Multiple Output (MIMO) antenna with dual filtering property is proposed. Two monopole antennas with W-shaped and n-shaped slots on their radiating patch are arranged vertically to form the MIMO antenna topology. Each monopole is composed of a slotted radiating patch and a simple ground plane which yield band stop feature in Worldwide Interoperability for Microwave Access (WiMAX) and Wireless Local-Area Network (WLAN) frequency band. In the sequel, to enhance the isolation, a parasitic structure has been wiely embedded between two monopole antennas. Applying the aforementioned decoupling structure improves the isolation level from -17dB to -22dB. The proposed two-element MIMO antenna with vertical arrangement, covers UWB frequency range from 3.1 to 10.6 GHz with notches at WiMAX (3.3–3.8 GHz) and WLAN (5–6 GHz) bands. The inter element isolation is less than -22 dB and in most cases even is less than -25 dB over the entire operating frequency band. The obtained simulated and measured results confirms suitable good matching acceptable Envelope Correlation Coefficient (ECC), efficiency, group delay, and radiation patterns. All these gurantrees a promising performance for the proposed MIMO antenna.
Published Version
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