Query: DIPOLE 5G

title: Design and Fabrication of Wideband Dual Polarized Dipole Array for 5G Wireless Systems
abstract: This paper presents simulation and measurement results of a wideband planar phased array for 5G. The desired wideband operation is achieved using a tightly coupled dipole array (TCDA) The proposed array consists of tightly coupled dipole units in dual polarized configuration, and two thin parasitic layers separated apart by air gap for wide angle impedance matching (WAIM) The top matching layer is loaded with a metasurface composed of sub wavelength split ring resonators (SRRs) to improve the scanning performance of array. The infinite array achieved a bandwidth from 23.5 to 29.5 GHz, with voltage standing wave ratio (VSWR) 3 for scan up to 60degin E, H and D plane. The array has a height of only $0.144\lambda _{l} and it exhibits high gains, high efficiency >71% (largest scan angle) and good cross polarization. The simulations are validated by fabrication and measurement of an array prototype, which indicates agreement to simulated values. The proposed dual polarized antenna array can be deployed in the future beam scanning applications for 5G.

title: Broadband dual polarized dipole antenna for LTE/5G base station applications
abstract: This article presents a broadband dual polarized dipole antenna for LTE/5G base station, which consists of loop dipoles, T shaped cross feeding lines, L shaped parasitic elements, and metallic cylinders. As a result, the test results show good achievement of wide band (48.6% 2.21 3.63 GHz) stable gain (8.3 dBi) and high port to port isolation >30 dB) In addition, good cross polarization discrimination (XPD) >30 dB) and stable radiation pattern on horizontal plane are realized over the band by employing a rectangular box shaped reflector. Furthermore, with simple structure, this antenna can provide partial reference for the design of LTE/5G base station antennas.

title: 5G Wideband Magneto Electric Dipole Antenna Fed by a Single Layer Corporate Feed Network based on Ridge Gap Waveguide
abstract: This paper proposes a wideband magneto electric (ME) dipole fed by a single layer corporate feed network based on the ridge gap waveguide (RGW) transmission line technology for 5G backhauling applications. The proposed antenna is composed of two layers. The top layer is the radiating layer that is composed of the $2 \times 2$ ME dipole antenna element. The bottom layer is the corporate feed network designed based on RGW. The proposed solution differs from the conventional solution where a slot antenna is fed by RGW and a cavity layer is to excite the radiating elements in order to provide a large spacing for the corporate feed network in the design of the array antenna. Our new design allows for a smaller antenna volume as it excited the antenna directly by the RGW without the need of cavity layer. In addition, with the use of the ME dipole radiating element, the bandwidth performance supported by the proposed design is larger as compared to the existing conventional designs. From the obtained simulation results, the proposed antenna produces $S_{11}\le \quad 10$ dB over $24 30$ GHz resulting in a 22% fractional bandwidth. The maximum directivity over the operating bandwidth of the simulated $2 \times 2$ ME dipole antenna element is approximately 15.4 dBi. Thus, the proposed antenna is a good candidate for low profile fixed beam applications.

title: A Compact Wideband Circularly Polarized Magneto Electric Dipole Antenna Array for 5G Millimeter Wave Application
abstract: A compact wideband circularly polarized (CP) magneto electric (ME) dipole antenna array is proposed. In order to achieve compact size and wideband characteristics, a novel substrate integrated waveguide (SIW) to coaxial transition (SCT) was designed to connect the lightning shaped ME dipole antenna element and an SIW feeding network. Particularly, an SCT based power divider network together with the sequential rotation (SR) technique was employed to improve the axial ratio (AR) bandwidth of the $4\times 4$ antenna array. The antenna array prototype was fabricated to verify the design. Measured results show that an impedance bandwidth of 27.7% (23.3 30.8 GHz) and 3 dB gain bandwidth of 25.3% (23.5 30.3 GHz) were achieved. Moreover, a 3 dB AR bandwidth of 27.8% (23.2 30.8 GHz) with a peak gain of 20.2 dBic was also recorded. Therefore, it is a good candidate for the fifth generation (5G) millimeter wave (mm wave) communications.

title: Dual wideband dual polarised magnetoelectric dipole antenna for 4G/5G microcell base station
abstract: A novel dual wideband dual polarised magnetoelectric (ME) dipole antenna for the fourth generation (4G)/fifth generation (5G) microcell base station is proposed. Using a pair of orthogonal ME dipoles and G shaped tapered cross feeding lines, the initial antenna achieves dual band and dual polarised. Then, four U shaped gaps, added in electric dipoles, effectively extend the lower impedance bandwidth. Finally, a circular parasitic patch with capacitive properties is innovatively loaded above the ME antenna, which obviously reduces the high resonant frequency from 5.5 to 4.9 GHz. Meanwhile, a box shaped reflector is employed to achieve stable gain and radiation patterns. As a result, the measured results show the good dual wideband performance of 52.4% (2.14 3.66 GHz) and 7.4% (4.68 5.04 GHz) with voltage standing wave ratio (VSWR) 25 dB) and high gain (9.5 and 5.5 dBi, respectively) In addition, a stable radiation pattern with a half power beam width of 63.5 deg 6.8 deg and good cross polarisation discrimination >20 dB) on the E plane is realised over these two bands.

title: Wideband and Low Profile Miniaturized Magneto Electric Dipole Antenna for 5G mmWave Applications
abstract: A wideband and low profile magneto electric (ME) dipole antenna with a two stage meandering via and a novel shorting pin is presented for 5G mmWave applications. The two stage meandering via is designed to compensate the small phase difference between radiation apertures when thin substrate is used. The thickness of proposed antenna can be reduced from $0.25 \lambda_{0} to $0.06\lambda_{0} by using the two stage meandering via. The shorting pin functions as a third mode excitation, which can enhance the impedance bandwidth of proposed antenna from 23% to 40.6% The dimension of the proposed antenna is only $0.37\times 0.37 \times 0.06 \lambda_{0}{3}

title: Design of High Gain and Broadband Printed Strip Dipole Antenna for the Up Coming 5G Millimeter Wave Communication System
abstract: In this paper a broadband end fire printed strip dipoles antenna that is suitable for 5G millimeter wave applications is presented. The antenna consists of several parallel strip dipoles of different lengths. Using more than one strip dipole helps in providing the broadband characteristics. To realize a wide frequency band of operation, the antenna is fed from 50 O coaxial connector through a matching stub of different widths. A truncated ground plane is used as a reflector to achieve high front to back (F/B) gain ratio. Design and analysis of the antenna were performed using electromagnetic simulations, to validate the performance of the antenna. The antenna provides end fire radiation pattern with high gain, low cross polarization level and wide beam width. The single element antenna yields a |S11| 10 dB bandwidth of 60.3% (23.4 43.5 GHz) and a gain of 7.64 10.4 dBi. A low mutual coupling of 20 dB for a 5.5 mm center to center spacing 0.58l at 32 GHz. The simulation results show that the antenna with the merits of average gain of 9 dBi, stable radiation patterns, low cross polarization, and low back lobes, is exhibiting potentially use for the applications of 5G wireless communication systems.

title: Circular Dipole Array With Omnidirectional and Beam steering Capabilities for 5G Communications
abstract: The design of a dipole antenna array with beam steering capabilities as well as omnidirectional performance in the US 5G Sub 6 GHz band is reported. The single radiating element consists on a planar dipole formed by printing two arms back to back on a circular substrate. The proposed circular antenna array is composed of four dipoles with four open circuit used as switches. The pattern reconfigurability is achieved by controlling the switching states. The design processes are presented, and the structure is optimized and simulated. According to the simulated results, seven modes with a global matching bandwidth of 180MHz $S_{11} \lt10$ dB) can be selected with high peak gain of 6dBi and good total efficiency of 89% The omnidirectional radiation and beam steered directional patterns (covering $360^\circ} can be electronically tuned depending on the working states. The comparison to other state of the art antennas shows that the proposed reconfigurable array has a compact size, high gain and easy to design. This proposed antenna is well suitable for future 5G sub 6GHz 5G compact base station.

title: A wideband folded magnetoelectric dipole antenna with miniaturized integration for 5G applications
abstract: A 3 layer substrate integrated folded magnetoelectric dipole antenna is presented in this paper. The folded metal vias are proposed to broaden bandwidth and miniaturized antenna. Furthermore, the double arc edged patch, the single arc edged metal plane, side wall and removing shorted end are designed to improve the impedance matching and reduce the operating frequencies. The structure and parameters of the antenna are analyzed, especially the bandwidth blending and the current paths. A prototype was fabricated and measured. The presented antenna obtains a wide impedance bandwidth of 34.2% for VSWR<=2 from 4.88 to 6.89 GHz and a stable gain ranging from 6.0 to 7.5 dBi. Moreover, nearly identical unidirectional radiation patterns, low cross polarization and low back radiation are achieved. The parameter of d s even can realize a lower operating frequency. The presented antenna is suitable for mass production with low cost by the printed circuit board technology, and promising for 5th Generation (5G) applications.

title: Metamaterial loaded Dipole Antenna for mm Wave Wireless 5G Applications
abstract: A micro strip printed antenna with the dipole arms on the front and back planes of the substrate and loaded with meta material unit cells on both respective sides for 5G applications is presented. The meta material cells are positioned along the optimized places with respect to dipole arms. A micro strip line with $50\Omega$ characteristic impedance on the truncated ground has been employed for feeding purpose. The proposed antenna has a compact physical size with dimensions $17\times 24mm^{2} The antenna has resulting wide impedance bandwidth of 24 40GHz for 10dB return loss. The antenna shows a realized peak gain of 5.5dBi without meta material while as on loading it with meta material cells the peak gain has been improved by around 2dBi. The resulting peak gain of the proposed design is about 7.5dBi which along with the broader bandwidth, compact size makes it suitable for the high frequency mm Wave 5G applications.