This letter presents a study on linearly polarized compact multiband multiple-input-multiple-output (MIMO) antenna system for small mobile terminals. The MIMO consists of two symmetric printed monopole antennas with edge-to-edge separation 0.097 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> at 900 MHz. Each element has capacitive feed and is composed twisted lines, parasitic loop, shorting trip that generate five resonant modes...

This paper presents the design of <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$8 \times 8$ </tex-math></inline-formula> multiple-input multiple-output (MIMO) antennas for future 5G devices, such as smart watches and dongles. Each antenna MIMO configuration occupies notation="LaTeX">$3 4$ mm <sup xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> is printed on top layer substrate in form a rotated...

This paper presents a multiple-input multiple-output (MIMO) antenna system for millimeter-wave 5G wireless communication services. The proposed MIMO configuration is composed of four elements, where each possesses an HP-shaped that features simple and excellent performance. design can operate at very wideband 36.83–40.0 GHz (measured). Furthermore, the attains peak gain 6.5 dB with maximum element-isolation −45 dB. Apart from this, performance metrics such as envelope correlation coefficient...

This paper presents a novel design of Multiple Input Output (MIMO) antenna system for next generation sub 6 GHz 5G and beyond mobile terminals. The proposed is composed main board two side boards. To make the cost-effective, FR4 used as substrate. based on unit monopole etched at single element resonating 3.5 attaining 10 dB bandwidth 200 MHz 400 MHz. then transformed into an MIMO array 8-elements with overall dimension 150 mm × 75 7 mm, providing pattern diversity characteristics isolation...

This letter presents a pair of printed MIMO antennas for mobile handsets. With each antenna being coupled fed monopole in meandered shape, it is capable covering GSM 1800/1900, UMTS, WLAN, and LTE frequency bands. The are oriented diagonally at the nongrounded portion circuit board. substrate used board FR4 with relative permittivity 4.4 loss tangent 0.02. overall volume 110×65×0.8 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ,...

This paper presents a review of wireless power transfer (WPT) followed by comparison between ambient energy sources and an overview different components rectennas that are used for RF harvesting. Being less costly environment friendly, to provide potentially inexhaustible powering up low sensors portable devices installed in inaccessible areas where frequent battery replacement is difficult, if not impossible. The current challenges rectenna design detailed state-of-the-art also presented.

In this letter, a novel bianisotropic omega frequency selective surface (FSS) is presented. The distinctive feature of the that it offers simultaneous absorptive and partial reflective operation at seven bands range from C-band to K-band. maximum absorption (~ 99%) one side obtained 14.312 GHz, while reflection other remains between 75% 99%. Moreover, FSS provides same behavior for any arbitrarily oriented linear polarized wave as well circularly waves. Furthermore, stable against oblique...

In this paper, a single-layer reconfigurable reflective metasurface is presented. The proposed operates at 5.4 GHz and can achieve either absorption or cross-polarization conversion corresponding two different diode biasing states. acts as an absorber for incident wave when the diodes are forward-biased. Similarly, it changes polarization state of reflected linearly polarized reverse-biased. structure maintains aforementioned performance characteristics oblique incidence, up to 60° compared...

The high bandwidth and data rate demands of future wireless communications such as 6G beyond can no longer be met with existing technologies that are mainly based on naturally occurring three-dimensional materials. terahertz (THz) band refers to the electromagnetic frequency range lying between millimetre-wave infrared band, it has become an increasingly promising potential exploited for high-speed communication networks future. Lately, realisation THz devices been expedited through...

This letter provides correction comments to an article published in 2015, by Ghosh <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">et al.</i> which the authors have proposed a circular-split-rings-based ultrawideband ultrathin metamaterial absorber and claimed 90% absorption between 7.85 12.25 GHz. It is found that misinterpreted cross polarizer as broadband neglecting its cross-polarized reflection. incorporating coefficient of reflected...

In this research article, a multiband circular polarization selective (CPS) metasurface is presented. A reciprocal bi-layered designed by introducing the chirality in structure. The top layer of proposed composed split-ring resonator with cross shape structure inside it. same printed on bottom side rotating it at an angle 90° to achieve able add CPS surface capability between 5.18 and 5.23 GHz for y-polarized incident wave. For frequency band 5.18-5.23 GHz, transmission goes up - 4 dB, while...

A two-way tunable power divider for Simultaneous Wireless Information and Power Transfer (SWIPT) is proposed in this paper. The divides the incoming such a way that maximum utilized energy harvesting purposes rest of used information decoding purposes. This unequal distribution realized by tuning varactor diode's reverse biasing voltages. good matching performance attained using radial short stubs at input one output ports, respectively. High isolation achieved with help resistor connecting...

This paper presents a quad-band, 3D mountable rectenna module for ambient energy harvesting. With the aim of powering up Internet Things (IoT) nodes in practical environments, hybrid approach combining power, both at RF and DC, is adopted using 98 MHz FM band, GSM900 (Global System Mobile Communications), GSM1800, Wi-Fi 2.4 GHz band. A dual polarized cross-dipole antenna featuring asymmetric slots as well central ring structure enables multiband response improved matching higher three...

A single-layered, series-fed monopulse planar array antenna system is presented which reduces the complexity of corporate-fed antennas in terms multi-layered structures and number 180° ring hybrid couplers as comparator circuit.The proposed exploits only two 3dB/180° that results reduced insertion loss 3 dB.The X-band exhibits sum (Σ) patterns with dual (linear, circular slant) polarization, difference (Δ) linear bidifference (slant circular) polarization.The prototype has been fabricated...

In this work, a novel fractal multiple‐input multiple‐output (MIMO) antenna is designed for ultrawideband (UWB) applications. The radiating structure of the MIMO configuration employs circular fractalradiating excited through modified coplanar waveguide (CPW) feed. shape by employing small rings inside main ring patch element, which led to enhanced impedance bandwidth spanning from 3.15 20 GHz with acceptable radiation properties. results show that has peak gain 6.13 dBi and efficiency &gt;...

Abstract Presented in this paper is a circularly polarized (CP) wide 45° rotated slot antenna with broad bandwidth. Characteristic mode analysis initially carried out to show that, by simply rotating square slot, CP waves can be radiated if it properly excited. A simple 50 Ω feedline then designed excite the for generation of broadband waves. The has total volume 30 × 1.6 mm 3 . Measurement results indicate S 11 ≤ −10 dB impedance bandwidth 85.7% (3.2–8 GHz), axial ratio 57.1% (3.5–6.3 GHz)...

ABSTRACT This paper presents compact pattern reconfigurable antennas for mobile handsets in MIMO configuration. Each antenna of the configuration being coupled fed monopole meandered form is capable covering several cellular frequency bands range 1.75–2.67 GHz including 4G‐LTE, 2G‐GSM, 3G‐UMTS, and WLAN. The are printed diagonally at left right no‐ground portions on top layer substrate to enhance isolation performance. used FR‐4 with relative permittivity 4.35 loss tangent 0.02. volume 120 ×...