scholarly journals Low-Cost and High-Gain SIW Circularly Polarized Circular-Horn-Loaded Antenna for Broadband Millimeter-Wave Applications

2017 ◽  
Vol 26 (3) ◽  
pp. 728-734
Author(s):  
Ming Du ◽  
Jun Xu ◽  
Yuliang Dong ◽  
Xiao Ding
Keyword(s):  
Millimeter Wave ◽  
Low Cost ◽  
High Gain ◽  
Circularly Polarized ◽  
Loaded Antenna

scholarly journals A Millimeter-Wave Wideband Circularly Polarized Planar Spiral Antenna Array with Unequal Amplitude Feeding Network

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Huakang Chen ◽  
Yu Shao ◽  
Zhangjian He ◽  
Changhong Zhang ◽  
Zhizhong Zhang
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Axial Ratio ◽  
Circuit Board ◽  
Impedance Bandwidth ◽  
Side Lobe Level ◽  
Archimedean Spiral ◽  
Circularly Polarized

A 2 × 2 wideband circularly polarized (CP) antenna array operating at millimeter wave (mmWave) band is presented. The array element is a wideband CP Archimedean spiral radiator with special-shaped ring slot. The elements are fed by an unequal amplitude (UA) feeding network based on a microstrip line (MSL) power divider. The side lobe level is improved by this UA feeding network. In addition, a cross slot is employed to isolate the elements for decoupling. A prototype is fabricated, and the measured results show that the proposed array achieves an impedance bandwidth (IBW) of 6.31 GHz (22.5% referring to 28 GHz) and an axial ratio bandwidth (ARBW) of 7.32 GHz (26.1% referring to 28 GHz). The peak gain of the proposed array is 11.3 dBic, and the gain is greater than 9.3 dBic within the whole desired band (from 25 GHz to 31 GHz). The proposed array consists of only one substrate layer and can be built by the conventional printed circuit board technology. Attributed to the characteristics of wide bandwidth, simple structure, low profile, and low cost, the proposed antenna array has a great potential in mmWave wireless communications.

Low-cost and high-gain dual-polarized antenna for millimeter-wave applications: Experimental results

2011 ◽  
Vol 53 (3) ◽  
pp. 569-571 ◽  
Author(s):  
Alexandre Perron ◽  
Tayeb A. Denidni ◽  
Abdel R. Sebak
Keyword(s):  
Millimeter Wave ◽  
Low Cost ◽  
High Gain ◽  
Experimental Results ◽  
Dual Polarized ◽  
Dual Polarized Antenna

scholarly journals MTM- and SIW-Inspired Bowtie Antenna Loaded with AMC for 5G mm-Wave Applications

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Ayman A. Althuwayb
Keyword(s):  
Millimeter Wave ◽  
Ground Plane ◽  
Cost Effective ◽  
High Gain ◽  
Small Dimension ◽  
Radiation Efficiency ◽  
Fractional Bandwidth ◽  
Bowtie Antenna ◽  
Compact Dimension ◽  
Loaded Antenna

This paper investigates a feasible configuration of slotted bowtie antenna based on MTM and SIW properties for 5G millimeter-wave applications. To realize the proposed slotted bowtie antenna in a compact dimension with high performances, the MTM and SIW concepts are implemented by applying the trapezoidal slots on the top surface of the antenna and metallic via holes through the substrate layer connecting the top surface to the ground plane. The antenna has been fed with a simple microstip-line which is connected to a waveguide-port. It is shown that the slotted bowtie antenna with a small dimension of 30   ×   16   ×   0.8 mm3 operates over a measured wideband of 32–34.6 GHz with the fractional bandwidth, average gain, and radiation efficiency of 7.8%, 3.2 dBi, and 50%, respectively. To improve the antenna's performance, the artificial magnetic conductor (AMC) properties have been employed on the ground plane by loading vertical and linear slots with various lengths. The AMC slots are aligned under the trapezoidal slots on the top surface to transfer the maximum electromagnetic signals to them for optimum radiation. The proposed method enlarges the antenna’s effective aperture area, keeping constant its physical dimensions. The proposed AMC-loaded antenna covers wider frequency range of 30–37 GHz in measurement, which corresponds to 21% fractional bandwidth. The average experimental gain and radiation efficiency have been increased to 5.5 dBi and 66.5%, respectively, which illustrate the effectiveness of the proposed AMC-loaded antenna. The results confirm that the proposed slotted bowtie antenna with advantages of compact dimension, wide bandwidth, high gain and efficiency, low profile, being cost-effective, simple design, and easy fabrication process, which makes it applicable for mass production, can be a good candidate for 5G millimeter-wave applications.

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