Due to the fast development of wireless communication technology, reconfigurable antennas with multimode and cognitive radio operation in modern applications a high-data rate have drawn very close attention from researchers. Reconfigurable can provide various functions operating frequency, beam pattern, polarization, etc. The dynamic tuning be achieved by manipulating certain switching mechanism through controlling electronic, mechanical, physical or optical switches. Among them, electronic...

Reconfigurable antennas play important roles in smart and adaptive systems are the subject of many research studies. They offer several advantages such as multifunctional capabilities, minimized volume requirements, low front-end processing efforts with no need for a filtering element, good isolation, sufficient out-of-band rejection; these make them well suited use wireless applications fourth generation (4G) fifth (5G) mobile terminals. With active materials microelectromechanical (MEMS),...

A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration the consists four double-fed placed at different corners printed circuit board (PCB). low-cost FR-4 dielectric an overall dimension 75 × 150 mm2 used as substrate. are fed by 50-Ohm L-shaped microstrip-lines. Due to orthogonal placement microstrip feed lines, can exhibit polarization and radiation pattern...

In this study, we propose a design of multi-band slot antenna array applicable for fourth-generation (4G) and fifth-generation (5G) smartphones. The is composed double-element square-ring radiators fed by microstrip-line structures easy integration with radio frequency (RF)/microwave circuitry. are located on the corners smartphone printed circuit board (PCB) an overall dimension 75 × 150 mm². proposed multiple-input multiple-output (MIMO) designed to meet requirements 4G 5G mobile terminals...

The focus of this manuscript was to propose a new phased array antenna design for the fifth generation (5G) mobile platforms. Eight elements compact Quasi-Yagi antennas were placed on top portion smartphone printed circuits board (PCB) form beam-steerable design. −10 dB impedance-bandwidth proposed 5G spans from 25 GHz 27 providing 2 bandwidth with less than −16 mutual coupling function. A coax-to-microstripline truncated crown vias around coaxial cable used as feeding mechanism each...

In this study, a new coplanar waveguide (CPW)-fed diversity antenna design is introduced for multiple-input–multiple-output (MIMO) smartphone applications. The composed of double-fed CPW-fed with pair modified T-ring radiators. designed to cover the frequency spectrum commercial sub-6 GHz 5G communication (3.4–3.8 and 3.8–4.2 GHz). It also provides high isolation, better than −16 dB, without an additional decoupling structure. offers good potential be deployed in future smartphones....

A new multiple‐input/multiple‐output (MIMO) antenna design is introduced for future smartphones. The proposed contains four pairs of double‐fed circular‐ring resonators located at different edges the smartphone printed circuit board (PCB) with an FR‐4 substrate and a dimension 75 × 150 mm 2 . elements are fed by 50‐Ohm microstrip‐lines provide polarisation radiation pattern diversity function due to orthogonal placement their feed lines. By inserting rectangular slot under each microstrip...

A new ultra-wideband (UWB) multiple-input/multiple-output (MIMO) antenna system is proposed for future smartphones. The structure of the design comprises four identical pairs compact microstrip-fed slot antennas with polarization diversity function that are placed symmetrically at different edge corners smartphone mainboard. Each pair consists an open-ended circular-ring radiator fed by two independently semi-arc-shaped microstrip-feeding lines exhibiting characteristic. Therefore, in total,...

Over the past decade, radio-frequency identification (RFID) technology has attracted significant attention and become very popular in different applications, such as identification, management, monitoring. In this study, a dual-band microstrip-fed monopole antenna been introduced for RFID applications. The is designed to work at frequency ranges of 2.2–2.6 GHz 5.3–6.8 GHz, covering 2.4/5.8 operation bands. structure like modified F-shaped radiator. It printed on an FR-4 dielectric with...

This study proposes a low-profile dual-band MIMO patch antenna array with improved isolation for 4G-LTE and 5G wireless communications.The proposed design contains two closely-spaced coaxial-fed antennas U-shaped slots to generate operation at 2.6/3.6 GHz 4G/5G bands.The mutual coupling between elements can be reduced simultaneously both bands by employing pair of C-shaped parasitic structures different sizes the radiating patches.The results show that ports has been enhanced about 13 dB 10...

This study presents a new multiple-input multiple-output (MIMO) antenna array system designed for sub-6 GHz fifth generation (5G) cellular applications. The design features eight compact trapezoid slot elements with L-shaped CPW (Coplanar Waveguide) feedlines, providing broad bandwidth and radiation/polarization diversity. are in size function within the frequency spectrum spanning from 3.2 to 6 GHz. They have been strategically positioned at peripheral corners of smartphone mainboard,...

In this study, a new design of tri-band multiple-input–multiple-output (MIMO) antenna array is proposed for fifth-generation (5G) cellular systems. Its structure composed eight identical planar-inverted F (PIFA) elements placed at different edge corners the handset mainboard with overall dimensions 150 × 75 mm2. The PIFA and ground plane MIMO system are arranged on back layer platform, which makes easy to integrate circuit. For S11 ≤ −10 dB, radiation operate frequency ranges 2.5–2.7 GHz,...

In this paper, an eight-port antenna array operating in the 2.6 GHz band (2550-2650 MHz) for a multi-input multi-output (MIMO) mobile terminal is presented.The configuration of design composed four pairs low-profile dual-polarized slot antennas that are symmetrically placed at corners mobile-phone mainboard.Each pair consists miniaturized petal-shaped resonators fed by two independent microstrip-feeding lines, thus facilitating radiation pattern and polarization diversity: when acting...

A multi-band antenna array is proposed for 5G massive MIMO systems. The presented not only exhibits operation but also generates the polarization diversity characteristic which makes it suitable multi-mode operation. Its configuration contains eight modified planar-inverted F (PIFA) elements located at different corners of smartphone mainboard. For ease integration and design facilitation, ground plane are etched on same layer. $S_{11} \le -10 dB$, PIFA operate frequency ranges 2.5–2.7 GHz,...

This paper introduces a new simple-structured dual circularly polarized (CP) antenna design for fifth-generation (5G) front end systems.The configuration consists of crescentshaped slot radiator fed by pair rectangular 50-Ohm microstrip lines.The is designed on an FR-4 dielectric substrate with overall size 48 × 1.6 mm 3 to operate at 3.5 GHz, 5G candidate band.A wide CP characteristic supporting both left-hand circular polarization (LHCP) and right-hand (RHCP) achieved in the frequency...

A new MIMO antenna system with broadband radiators is introduced for sub 6 GHz fifth-generation (5G) mobile communications. The proposed design contains four pairs of compact coplanar-waveguide (CPW)-fed antennas polarization diversity that are symmetrically placed at corners the smartphone printed circuit board (PCB). Therefore, 5G horizontally polarized and vertically-polarized elements in total. low-cost FR-4 substrate ($\varepsilon_{r} = 4.4$, $\delta 0.02$) a dimension $75 \times150$ mm...

Recently, the need of frequency reconfigurable antenna has been widely increased in field mobile communications due to its attractive features. A new design MIMO for smartphone applications is introduced this paper. The structure consists four C-shaped slot radiators with miniaturized sizes etched on corners handsets. reconfigurability characteristic obtained by controlling ON/OFF states integrated PIN diodes into elements. operation can work at two frequencies: 2.6 and 3.5 GHz supporting 4G...

In this paper, a new design of multiple-input/multiple-output (MIMO) antenna is proposed for 3.6 GHz fifth generation (5G) mobile communications.The contains four pairs compact microstrip-fed dual-polarized antennas that are symmetrically placed at the corners smartphone printed circuit board (PCB).Each pair consists square loop radiation patch and defected ground structure (DGS).The radiators fed by two independently coupled Tshaped microstrip feeding lines, which can exhibit pattern...

A new design of MIMO antenna array for fifth generation (5G) mobile handsets is proposed in this manuscript. The configuration the consists eight planar-inverted F (PIFA) elements located at different corners smartphone printed circuit board (PCB). employed substrate a low-cost FR-4 laminate with an overall size 75×150×0.8 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> . For ease integration and facilitation, ground plane are etched...

In recent years, there has been significant interest and attention given to wireless power transfer electromagnetic energy harvesting. This study presents an ultra-wideband (UWB) antenna with improved radiation metamaterial-based structure for future systems. Its contains a modified CPW-fed monopole resonator trapezius-shaped ground plane inspired by $8\times 8$ metasurface which compact metamaterial unit cells. The employed cell of the is in form square ring protruded circular parasitic...

In this research work, a new and simple design method of compact slot antenna with dual notched bands is demonstrated for ultra-wideband (UWB) wireless networks.The presented printed on low-cost FR-4 substrate.Initially, an improved impedance bandwidth designed.This archived by employing extra two T-shaped strips which increases the upperfrequency band from 9 to 15 GHz.Later, undesirable including 4 GHz C-band, worldwide interoperability microwave access (WiMAX) at 3.5/5.5GHz (3.3 3.7...