Novel reconfigurable monopole‐based matching circuitry design for 5G and modern wireless communication systems

Abstract

In this paper, a design of a reconfigurable printed antenna circuitry for 5G portable devices is proposed based on a miniaturized structure. Thus, the proposed antenna is structured as a printed circuit monopole with a coplanar waveguide port (CWP). The ground proposed CWP is designed as an L-shaped reflector in order to increase the directivity of the proposed antenna toward a certain direction. A matching circuitry based on a fractal Minkowski structure of the first order is inductively attached to the antenna design to increase the antenna bandwidth. To control the antenna performance, the matching circuit is connected to the L-shaped reflector through four PIN diodes. The effects of different switching scenarios on the antenna performance are tested numerically and experimentally for validation. It is found that when all diodes are switched ON, such antenna shows two frequency bands, S 11 < À10 dB, from 3.5 to 3.7 GHz and from 5.08 to 6.9 GHz. Nevertheless, the antenna gain is found to be about 3.47 dBi at 3.6 GHz and 3.69 dBi around 5.1 GHz. The other switching scenarios are tested and presented in this work. It is observed that the PIN diodes' switching affects significantly on the antenna directivity and the radiation patterns. The antenna performance is parametrically analyzed using CST MWS based on a numerical technique and based on an analytical circuit model. The proposed antenna is fabricated and tested to be compared against the theoretical results. An excellent agreement was obtained between the simulated and measured results.

Circularly Polarized Metamaterial Patch Antenna Circuitry for Modern MIMO Applications

“…Nevertheless, the antenna may function over three frequency bands by raising the trace number. This is explained by the fact that raising the trace member increases harmonic reflections [7], which are caused by reducing the impedance imaginary component [3], which enhances the achieved impedance matching. The suggested antenna S 11 spectrum change by altering the trace number is depicted in Fig.…”

“…A MIMO antenna with small dimensions, high gain and performance, CP radiation, as well as broad impedance bandwidth, is also required for many wireless communication systems. Additionally, MIMO systems have been recommended as a means of reducing the impacts of multipath fading [7]. However, especially in portable contemporary MIMO devices and systems, the tight coupling of neighboring antennas may be the worst limitation [8].…”

On the Performance of a Photonic Reconfigurable Electromagnetic Band Gap Antenna Array for 5G Applications

“…EBG structures are engineered periodic arrays of dielectrics or metals that exhibit photonic band gap ranges where electromagnetic waves are prohibited from propagating through the material. These structures are designed to control the behavior of electromagnetic waves by creating stopbands in the frequency spectrum [11][12]. EBG structures have been utilized for a variety of applications.…”

Circularly polarized patch antenna with simultaneously wide frequency tuning range and high gain performance

“…The reconfigurable antenna can extend the working range and improve the working efficiency. 17,18 In general, frequency reconfiguration methods include using optical control devices, radio frequency diodes (PIN tubes), 19,20 radio frequency microelectromechanical switches (RF MEMS), [21][22][23] and other components to alter the antenna structure. 24 Nevertheless, these methods are intended for discrete frequency reconfiguration rather than continuous frequency tuning characteristics.…”

“…In another aspect, microstrip antennas have the virtues of small size, lightweight, and low cost. The reconfigurable antenna can extend the working range and improve the working efficiency 17,18 . In general, frequency reconfiguration methods include using optical control devices, radio frequency diodes (PIN tubes), 19,20 radio frequency micro‐electromechanical switches (RF MEMS), 21–23 and other components to alter the antenna structure 24 .…”