Four-element pentaband MIMO antenna for multiple wireless application including dual-band circular polarization characteristics

Abstract

In this article, a meander line-shaped pentaband (2.18–2.24, 2.38–2.46, 2.65–2.70, 3.10–3.32, 3.38–3.46 GHz) four-element multiple-input–multiple-output antenna is presented. The proposed antenna is also circularly polarized in two bands (at 2.2 and 2.4 GHz) with dual-polarization like right-handed at port 1 or 3 and left-handed at port 2 or 4, which is widely used for mobile satellite services (MSS) and Internet of Things applications. This antenna is designed and fabricated with compact size 50 × 70 × 1.6 mm3 on the FR-4 substrate with good diversity performance in pentaband. Simulated results of antenna-like return loss, isolation, and parameters-related diversity have also been tested experimentally in a controlled environment, which is within the permissible limit. The designed antenna will be appropriate for MSS, industrial scientific and medical (ISM), broadband radio services and educational broadband services, WiMAX radio location services, and amateur radio services. Meanwhile, specific absorption rate of the designed antenna has been examined in an empirical environment for the Fresnel radiating near-field applications.

Design and Analysis of a Dual-Band Semitransparent MIMO Antenna for Automotive Applications

“…Terefore, by arranging the semitransparent antenna elements orthogonally, the antenna provides better isolation without any decoupling structures and also has two polarization vectors (horizontal and vertical). (vi) Te CCL is found to be less than 0.2 bits/s/Hz unlike [31,32,34].…”

“…Te proposed semitransparent MIMO antenna is positioned vertically (case-1) and horizontally above metal (case-2) (see Figures 17(a (i) Te proposed semitransparent antenna is developed on the soda lime glass substrate with a thickness of 1.1 mm and can be installed in the mirror and windshield of the vehicle. (ii) Te proposed MIMO antenna has a dimension of 0.44λ 0 × 0.44λ 0 , which occupies less space than other works reported in the literature [30,32,33,35,36]. (iii) Unlike [33][34][35][36], the proposed semitransparent antenna provides dual-band without any reconfgurability techniques.…”

Pentaband Dual-Polarized Antenna for Multiservice Wireless Applications

“…Several CP MIMO antennas have been proposed in the literature, including dual circular polarization [31,32]. However, there are only a few research papers that demonstrate simultaneous LP and CP in single multiband MIMO antennas [33][34][35]. Dual-polarization antennas enable multiband operations with high isolation between nearly radiating bands, leading to better reception.…”

“…In another triple-band MIMO design, the first two bands use LP, and the third band uses CP [34]. Furthermore, a meander-line pentaband MIMO antenna with circular polarization was proposed for mobile satellite services and internet-of-things applications [35]. However, despite these advancements, there is still a need to provide dual polarization that covers other frequency bands.…”

“…However, despite these advancements, there is still a need to provide dual polarization that covers other frequency bands. This can be achieved through further research and development of CP MIMO antennas with high isolation, which will lead to better performance in wireless communication systems [33][34][35].…”