scholarly journals Dual-Polarized Crossed Bowtie Dipole Array for Wireless Communication Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Zhi-Ya Zhang ◽  
Shuang Li ◽  
Shao-Li Zuo ◽  
Jia-Yue Zhao ◽  
Xiao-dong Yang ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Phase Distribution ◽  
Base Station ◽  
Array Antenna ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Antenna Gain ◽  
Base Station Antennas ◽  
Dual Polarized ◽  
Dual Polarized Antenna

A dual-polarized array with downtilted radiation patterns is proposed for wireless communication applications. The proposed dual-polarized antenna element achieves an enhanced impedance bandwidth and compact dimensions by introducing a parasitic circular patch and vertical metal cylinders, which is a good candidate for radiating elements in base station antennas. By optimizing the amplitude and phase distribution along the feed, a radiation pattern with a downtilted angle is obtained. The dual-polarized array antenna achieves an impedance bandwidth for VSWR≤1.5, covering the frequency bands for 3G/LTE systems. Moreover, the proposed array achieves high port isolation, the stable antenna gain over the entire operating band. Therefore, the proposed array antenna is very suitable for potential wireless communication applications. A prototype has been manufactured and measured. The measurements, that match the design objectives, are also presented.

Design and Simulation of a Broad Band Retrodirective Array Element

2011 ◽  
Vol 130-134 ◽  
pp. 3087-3090
Author(s):  
Feng Ge Hu ◽  
Jian Hua Zhang ◽  
Li Ye Fang
Keyword(s):  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Microstrip Line ◽  
Broad Band ◽  
Array Element ◽  
Impedance Bandwidth ◽  
Antenna Gain ◽  
Dual Polarized ◽  
Retrodirective Array ◽  
Dual Polarized Antenna

In this paper, a novel dual-polarized antenna fed by microstrip line for retrodirective array is presented. The star-shaped patch is used to reduce the mutual coupling among array elements; also bandwidth can be enhanced by choosing stacked patch. The simulated results indicate that the impedance bandwidth (VSWR<2) achieve 17%, the antenna gain is higher than 8dB, the port-to-port isolation and polarization isolation maintain at less than-20dB. A 1-D retrodirective array is designed based on this novel element, the array displays better retrodirectivity. It is validated that the dual-polarized microstrip antenna can be widely used in retrodirective array.

LTCC slot array antenna for 5G application

2019 ◽  
Vol 2019 (1) ◽  
pp. 000238-000242
Author(s):  
Hiroyuki Takahashi ◽  
Satoshi Hirano ◽  
Daisuke Yamashita
Keyword(s):  
Mobile Device ◽  
Beam Steering ◽  
Base Station ◽  
Small Cell ◽  
Array Antenna ◽  
Antenna Element ◽  
Beam Angle ◽  
Antenna Size ◽  
Antenna Module ◽  
Cell Base

Abstract We develop the antenna module substrate which is broadband and large gain using an LTCC technology in a 28GHz band in this study. We used LTCC materials (dielectric constant 5.8, Dielectric loss 0.002@28GHz) which we developed for materials originally. First of all, we confirmed ability of slot array antenna made by LTCC for 5G application to get broadband property. The structure of designed array antenna became 40mm × 3.2mm × t1.6mm. We confirmed that this antenna has wider bandwidth (2.2GHz) and higher gain (6dBi). But this antenna size is too large for applying mobile device. Therefore we redesigned to reduce antenna size without specification degradation. The structure of redesigned antenna element becomes basically 4.8mm × 6.7mm × t1.0mm. This antenna has wider bandwidth (2.7GHz). The gains are more than 5dBi for the characteristic of this element in a band. Assume this antenna a fabric; 2 × 2 (4 elements: for mobile device) and 4 × 4 (16 elements: for small cell base station) we make an array antenna for Small cell base station and for mobile device. We will evaluate a beam steering examination with emission properties (gain, beam angle).

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