Abstract
A multiple-input-multiple-output (MIMO) ultra-wideband (UWB ) printed bent antenna, suitable for MB-OFDM ECMA-368 system integration with the wireless universal serial-bus (WUSB) dongle is proposed. The antenna consists of two antenna elements with an overall area of 18 X 53 mm2. Each antenna element is a simple modified folded-monopole fed by a coplanar waveguide (CPW). The design process of proposed MIMO UWB CPW-fed bent antenna configuration is presented in four simple steps. Experimental results show that the proposed design has a good impedance bandwidth in the range of 2.95–18.55 GHz with 147.2% fractional bandwidth (FBW). Moreover, the proposed antenna enjoys, low envelope correlation coefficient (ECC), good diversity gain (DG), low total active reflection coefficient (TARC) and omnidirectional radiation patterns. The bit error rate (BER) of the overall MB-OFDM ECMA-368 system with the existence of the proposed MIMO UWB CPW-fed bent antenna is evaluated in more realistic transmission channel scenario by using the extracted transmitting and receiving UWB antennas transfer functions.
Highlights
Sharing information very quickly with a high data rate is an obsession of all humanity in the world, following this reason, the presence of large bandwidth is inevitable
MB-OFDM in combination with multi-input multi-output (MIMO) techniques has shown to be an effective solution for the short-range communication limitations that need devices transmitting at extremely low power levels, following the federal communication commission (FCC) approval in the band 3.1 GHz to 10.6 GHz [9][10][11]
To validate the diversity capability of the proposed MIMO UWB coplanar waveguide (CPW)-fed bent antenna, the envelope correlation coefficient (ECC), the total active reflection coefficient (TARC), and the diversity gain (DG) properties are the metrics investigated in this paper
Summary
Sharing information very quickly with a high data rate is an obsession of all humanity in the world, following this reason, the presence of large bandwidth is inevitable. In [16] a 50 mm × 82 mm MIMO UWB antenna is proposed based-on T-shaped isolation stub. The physical size of this antenna is 26 mm × 31 mm with an impedance bandwidth of 9.1 GHz in frequency range 2.9 12 GHz. In [18] a 22 mm × 31 mm MIMO UWB antenna based on T-shaped stub is studied. The impedance bandwidth is 9.1 GHz frequency range 2.9 − 12 GHz. Based on stepped slots four elements MIMO UWB antenna is proposed in [19].
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