A hybrid antenna is proposed for future 4G/5G multiple input output (MIMO) applications. The composed of two modules, namely, 4G module and 5G module. a two-antenna array capable covering the GSM850/900/1800/1900, UMTS2100, LTE2300/2500 operating bands, while an eight-antenna in 3.5-GHz band C-band (3400-3600 MHz), which could meet demand application. Compared with ideal uncorrelated antennas 8 × MIMO system, has shown good ergodic channel capacity ~40 b/s/Hz, only 6 b/s/Hz lower than case....

A dual-polarized hybrid eight-antenna array operating in the 2.6-GHz band (2550-2650 MHz) for 5G communication multi-input multi-output (MIMO) operation smartphone is presented. The proposed antenna elements are symmetrically placed along long edges of smartphone, and they composed two different four-antenna types (C-shaped coupled-fed L-shaped monopole slot) that exhibit orthogonal polarization. Therefore, coupling between can be reduced, MIMO system performances enhanced. prototype...

A high-isolation eight-antenna multi-input multi-output (MIMO) array operating in the 3.5 GHz band (3.4-3.6 GHz) for future smartphones is proposed. Here, a novel balanced open-slot antenna designed as an element, which this design can yield slot mode (with reduced ground effects) that enhance isolation between two adjacent input ports. Furthermore, by meticulously arranging positions of eight elements, desirable polarization diversity also be successfully achieved, further mitigates...

A 12-port antenna array operating in the long term evolution (LTE) band 42 (3400-3600 MHz), LTE 43 (3600-3800 and 46 (5150-5925 MHz) for 5G massive multiple-input multiple-output (MIMO) applications mobile handsets is presented. The proposed MIMO composed of three different element types, namely, inverted π-shaped antenna, longer L-shaped open slot shorter antenna. In total, eight elements are used 8×8 bands 42/43, six designed 6×6 46. was simulated, a prototype fabricated tested. measured...

A multi-band 10-antenna array working at the sub-6-GHz spectrum (LTE bands 42/43 and LTE band 46) for massive multiple-input multiple-output (MIMO) applications in future 5G smartphones is proposed. To realize <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$10\times 10$ </tex-math></inline-formula> MIMO three bands, 10 T-shaped coupled-fed slot antenna elements that can excite dual resonant modes are...

The design of a novel practical 28 GHz beam steering phased array antenna for future fifth generation mobile device applications is presented in this communication. proposed has 16 cavity-backed slot elements that are implemented via the metallic back casing device, which two eight-element arrays built on left- and right-side edges device. Each can yield at broadside gain >15 dBi be achieved boresight. measured 10 dB return loss bandwidth element was approximately 27.5-30 GHz. In addition,...

A planar microstrip-fed super wideband monopole antenna is initially proposed. By embedding a semielliptically fractal-complementary slot into the asymmetrical ground plane, 10-dB bandwidth of 172% (1.44-18.8 GHz) achieved with ratio >;12:1. Furthermore, proposed also demonstrated wide 14-dB from 5.4 to 12.5 GHz, which suitable for UWB outdoor propagation. This able cover DVB-H in L-band (for PMP), DCS, PCS, UMTS, Bluetooth, WiMAX2500, LTE2600, and bands.

An eight‐port antenna array designed for future 5G 2.6 GHz band (2550–2650 MHz) multi‐input multi‐output (MIMO) in the smartphone applications is presented. In order to enhance port isolation and reduce correlation between antennas, square loop radiating strip with orthogonal polarisation employed. The proposed composed of four pairs uniform elements that are symmetrically placed at corners main board, each pair includes a communal two independently coupled feeding strips. By exciting from...

In this paper, multiband antennas based on a single ring slot are proposed for 4G/5G smartphone applications. The basic structure of the antenna is consisted large metal ground and an unbroken rim, in which 2 mm-wide slots realized between rim. Here, reconfigurable 4G (820-960 1710-2690 MHz) initially devised by loading multiple grounded stubs simple dc controlling circuit with varactor diode into upper section slot. To further cover sub-6 GHz spectrum (3400-3600 future 5G communications,...

An 8-element dual-band multiple-input-multiple-output (MIMO) antenna operating in the 5G New Radio band n77 (3300-4200 MHz) and 5 GHz (4800-5000 mobile handsets is presented. The MIMO formed by employing four sets of dual-antenna arrays (DAAs) that are symmetrically printed along two long side-edge frames smartphone. Each DAA composed double-branch monopoles a T-shaped decoupling stub, which good mutual coupling reduction can be realized via structures. Furthermore, structures also aid...

This paper presents a substrate integrated waveguide (SIW) multibeam slot array operating at <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\sim 30$ </tex-math></inline-formula> GHz for future 5G mobile terminal applications. The forming network is realized with Butler matrix that composed of hybrid couplers, crossovers, and phase shifters (135° 0°). crossovers are formed two cascaded couplers. In the...

In this paper, a compact building block composed of slot antenna and loop is proposed. The the share rectangular clearance, which improves compactness effectively. Although have overlapped completely, proposed exhibits good isolation (better than 19 dB) without any external decoupling structure. Four such blocks are used to implement eight-port multiple-input multiple-output (MIMO) array operating at 3.5 GHz band (3.4-3.6 GHz) for fifth-generation (5G) metal-rimmed smartphone applications....

An eight-antenna array with wideband operation for future 5G New Radio mobile devices is studied. Each element composed of an inverted-F antenna shorting branches and parasitic elements. The driving (monopole structure) the (inverted-L branch inverted-C branch) enable to obtain multiple modes, whereas element, open slit, stub can improve impedance matching. 6 dB bandwidth proposed completely cover Sub-6 GHz NR frequency Bands n77/n78/n79, which include band U.S. (3.55-4.2 GHz), China, EU,...

A novel cavity-backed slot antenna, with the ability of reconfiguring frequency, polarization, and radiation pattern, is presented. The reconfigurability realized by electronically controlling state switches between two crossed slots etched on surfaces a substrate integrated waveguide cavity. antenna capable simultaneously changing patterns forward backward directions, switching polarization among orthogonal linearly polarized (LP) circularly (CP) states, tuning three frequency bands for LP...

A multiple-input-multiple-output (MIMO) antenna array for broadband 5G new radio (5G NR) metal-frame smartphone applications is proposed. The MIMO realized by loading eight identical antennas (Ant1-Ant8) into the metal frame of to form an eight-antenna sub-6 GHz 8 × system. Each element a slot type that composed L-shaped open and 50 Ω microstrip feedline, good impedance matching in upper frequency band can be achieved tuning stub feedline. 10 dB bandwidth proposed cover NR Bands n77/n78/n79...

In this paper, a novel decoupling method without adding any structure is investigated, and it able to apply multiple-input multiple-output (MIMO) antenna designs with dual multiple elements. The mechanism applied in here change the electrical length of radiators manipulate radiation pattern for obtaining diversity good isolation simultaneously. design procedures realizing are presented. To validate proposed method, two-element monopole array inverted-L elements initially studied better than...

An 8-port multiple-input multiple-output (MIMO) array operating in the long-term evolution (LTE) band 42 (3400-3600 MHz) based on characteristic mode theory (CMT) is described. As designing a multi-antenna system with multiple significant modes difficult for CMT, new method is, therefore, proposed to effectively provide useful physical insights and improve envelope correlation coefficient (ECC). Although many of same are excited by two antennas, still effective ECC antennas. A detailed...

A tri-polarized antenna with diverse radiation characteristics is proposed in this paper. This design mainly consists of two pairs loop radiating dipoles and an omnidirectional monopole element, which are used for the fifth generation (5G) vehicle to everything (V2X) communications, respectively. By adding eight inverted L-shaped patches unequal sizes around dipoles, wide beamwidths both E- H-planes can be obtained across desired lower upper frequency bands. Furthermore, by employing...

A dual-wideband dual-polarized antenna using metasurface for the fifth generation (5G) millimeter wave (mm-wave) communications is proposed. It designed and analyzed based on characteristic mode theory (CMT). The proposed mainly composed of a 3×3 square-patch, in which its four corner patches are further sub-divided into 4×4 sub-patch array, while size other edge reduced center patch etched with pair orthogonal slots. By doing so, side lobe level can be effectively main beam radiation...

A compact size, coplanar waveguide (CPW) fed two-antenna multiple input output (MIMO) with high isolation and excellent impedance matching operating in n77/n78/n79 5G NR sub-6 GHz/Wi-Fi-5/V2X/DSRC/Wi-Fi-6/INSAT-C is proposed for future wireless applications. Each antenna element a CPW-fed type composed of an “inverted-A,” “y-shaped,” “small extended stub” structures. The two-antennas are deployed the same orientation at edge-to-edge distance 0.06λ (λ represents free-space wavelength 3.70...

A compact, dual polarized, multiband four-port flexible Multiple Input Output (MIMO) antennae with the connected ground and high isolation is designed computation experimental measurement studies. All four monopole radiators are embedded decagon-shaped FR-4 substrate an outer radius of 10 mm in order to accomplish circularly polarized (CP) radiations, bandwidth enhancement, compact size only 45×38×0.2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A dual-band Multiple Input Output (MIMO) antenna with low mutual coupling is analyzed and studied for Fifth Generation (5G) Sub-6 GHz Wireless Fidelity (Wi-Fi) 6E frequency-band applications. Each of the identical monopole radiators consists a rectangular patch, inverted-E, asymmetrical T-shaped strip to generate 5G Wi-Fi frequency bands. The deployment horizontally end-to-end separation 5mm makes compact an overall dimension <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A compact quad-port multiple-input–multiple-output (MIMO) antenna with dual polarization is proposed. Each of the four elements features a modified rectangular radiator backed by partial ground plane and fed T-shaped microstrip line. The are interconnected an X-shaped strip isolated plus-shaped structure, resulting in over −18 dB isolation. With small footprint only 36 mm × 27 mm, exhibits 10 impedance bandwidth completely overlapping 3 axial-ratio 19.32% (7.90–9.59 GHz). Additionally, it...

A square patch passive RFID tag antenna designed for UHF band is presented in this article. To achieve compact size and circular polarization (CP) radiation, the embedded with a cross slot, while an L-shaped open-end microstrip line linked to tag-chip terminated by shorting pin capacitively coupled patch. By selecting appropriate length its coupling distance radiating element, easy control on input impedance of proposed which leads excellent matching achieved. The measured 10-dB return-loss...

A novel compact microstrip-fed slot antenna design is proposed. By properly loading a notch to the open-ended T-shaped and extending small section microstrip feed line, multiple resonant frequencies are excited merged form large enough 10-dB return loss bandwidth (measured from 3.1 11.45 GHz) for ultrawideband (UWB) applications. The vital parameters of proposed illustrated, prototype constructed experimentally studied. measured results show good radiation patterns stable signal transmission...