Compact UWB-MIMO antenna with band-rejection in WLAN

A compact multiple-input-multiple-output (MIMO)/ diversity ultra-wideband (UWB) antenna with planar structure is presented in this paper. It comprises of two modified rectangular slot antennas excited by microstrip transmission lines. An inverted U-shaped slot is inserted in the feeding transmission...

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Bibliographic Details
Main Authors: Latif, Farah, Tahir, Farooq A., Khan, Muhammad U.
Format: Conference Proceeding
Language:English
Subjects:
Antenna radiation patterns
Band-notch
compact size
MIMO
multiple-input-multiple-output (MIMO)
Slot antennas
Ultra wideband antennas
ultra-wide band (UWB)
Wireless communication
Wireless LAN
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Summary:A compact multiple-input-multiple-output (MIMO)/ diversity ultra-wideband (UWB) antenna with planar structure is presented in this paper. It comprises of two modified rectangular slot antennas excited by microstrip transmission lines. An inverted U-shaped slot is inserted in the feeding transmission line to create a band-rejection at WLAN band (5.15-5.825 GHz). The mutual coupling between the two antenna elements is decreased by introducing T-shaped slot and a rectangular slot between them. The rectangular slot reduces the coupling at lower frequencies i.e. 3-5 GHz while T-shaped slot maintains good isolation at higher frequencies i.e. 5-10.6 GHz. The proposed antenna has a bandwidth of 7.5 GHz and operates at 3.1-10.6 GHz. It occupies a space of 22 × 26 mm 2 and achieves minimum isolation of 20 dB between its antenna elements over the whole operating band. The small size, good isolation and stable radiation patterns of the proposed antenna make it suitable candidate for UWB diversity applications.
ISSN:2157-9830
DOI:10.1109/MMS.2016.7803821