Abstract
A novel compact planar 2 × 2 antenna system with super-wide bandwidth is presented in this paper. The MIMO antenna has four square-shaped patches with two slots in each that are interconnected with each other using four strip lines printed on a substrate of Rogers Duroid RT 5880 with relative permittivity of εr = 2.2 and tangent loss of δ = 0.0009. The proposed antenna system has a partial ground plane with two enhancement fractured slots. The design is characterized by a super-wide impedance starting from 15.2 to 62 GHz (a bandwidth of 46.8 GHz) and compact total system size of 11.2 × 15.25 mm2 with a thickness of 0.12 mm. The proposed MIMO design has omnidirectional radiation pattern for far field and the achieved peak gain reaches 13.5 dBi. The presented planar antenna which relies on computer aided design, has been designed and simulated using an industrial standard simulation code. Its performance results showed that the MIMO design is characterized by super wide bandwidth, omnidirectional radiation pattern, and high-power gain with miniaturized physical size; thus, it is suitable for radio-frequency identification (RFID) systems, fifth-generation applications, ultra-wideband systems, and others.
Highlights
A dramatic growth in data rates has found a high demand with rapid development of the current wireless systems [1]
In order to overcome many drawbacks in many previous designs, this paper proposes a new design of the multiple input multiple output (MIMO) antenna system that is characterized by operating frequency, power gain, and radiation pattern with reduced structure size
The optimization process is performed to obtain the smallest antenna dimensions that exhibits the omni-directional pattern with minor distortions at millimeter waves, super-wide bandwidth, and higher gain
Summary
A dramatic growth in data rates has found a high demand with rapid development of the current wireless systems [1]. Wireless applications are shifting globally from long-term evolution (LTE) to the fifth-generation systems in order to overcome data rates, frequency band shortages, and future needs. Several techniques have been studied and developed previously in order to enhance the bandwidth spectrums and to minimize the physical footprint, which makes the microstrip patch antennas widely popular in several wireless communication systems [16]. In order to overcome many drawbacks in many previous designs, this paper proposes a new design of the MIMO antenna system that is characterized by operating frequency, power gain, and radiation pattern with reduced structure size. The proposed antenna system configuration is introduced with details
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