Design of ka-band 2×2 circular polarization slot antenna array fed by ridge gap waveguide

2017 ◽  
Author(s):  
Tong Li ◽  
Fangfang Fan
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Slot Antenna ◽  
Ka Band

Ka-band SIW Slot Antenna Array with Low Sidelobe Level

2021 ◽  
Author(s):  
Tongyu Ding ◽  
Mengyu Wang ◽  
Jie Guo ◽  
Jun Xiao ◽  
Qiubo Ye
Keyword(s):  
Antenna Array ◽  
Slot Antenna ◽  
Sidelobe Level ◽  
Ka Band ◽  
Low Sidelobe

scholarly journals Ka-Band Slot-Microstrip-Covered and Waveguide-Cavity-Backed Monopulse Antenna Array

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Li-Ming Si ◽  
Yong Liu ◽  
Yongjun Huang ◽  
Weiren Zhu
Keyword(s):  
Antenna Array ◽  
Printed Circuit Board ◽  
Low Cost ◽  
Dielectric Substrate ◽  
Circuit Board ◽  
Slot Antenna ◽  
Ka Band ◽  
Operating Bandwidth ◽  
The Difference ◽  
Waveguide Slot Antenna

A slot-microstrip-covered and waveguide-cavity-backed monopulse antenna array is proposed for high-resolution tracking applications at Ka-band. The monopulse antenna array is designed with a microstrip with2×32slots, a waveguide cavity, and a waveguide monopulse comparator, to make the structure simple, reduce the feeding network loss, and increase the frequency bandwidth. The2×32slot-microstrip elements are formed by a metal clad dielectric substrate and slots etched in the metal using the standard printed circuit board (PCB) process with dimensions of 230 mm  ×  10 mm. The proposed monopulse antenna array not only maintains the advantages of the traditional waveguide slot antenna array, but also has the characteristics of wide bandwidth, high consistence, easy of fabrication, and low cost. From the measured results, it exhibits good monopulse characteristics, including the following: the maximum gains of sum pattern are greater than 24 dB, the 3 dB beamwidth of sum pattern is about 2.2 degrees, the sidelobe levels of the sum pattern are less than −18 dB, and the null depths of the difference pattern are less than −25 dB within the operating bandwidth between 33.65 GHz and 34.35 GHz for VSWR ≤ 2.

scholarly journals Low-RCS, Circular Polarization, and High-Gain Broadband Antenna Based on Mirror Polarization Conversion Metasurfaces

2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Liang Zhang ◽  
Changqing Liu ◽  
Chun Ni ◽  
Meng Kong ◽  
Xianliang Wu
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Cross Section ◽  
High Gain ◽  
Slot Antenna ◽  
Polarization Conversion ◽  
Broadband Antenna ◽  
X Band ◽  
Fabry Perot ◽  
Operating Bandwidth

In this paper, a novel slot antenna array that is based on mirror polarization conversion metasurfaces (MPCM) is proposed. It achieves circular polarization (CP) and effectively reduces the radar cross section (RCS) and increases gain in the entire x-band. This design uses the mirrored composition of the polarization conversion metasurfaces (PCM) on the top surface of the substrate. The MPCM covers a 2 × 2 slot antenna array that is fed with by a sequentially rotating network. The CP radiation is realized by the polarization conversion characteristics of the PCM. At the same time, the reduction of RCS is achieved by 180° (±30°) reflection phase difference between two adjacent PCMs. The improvement in gain is achieved by using a Fabry–Perot cavity, which is constituted by the ground of the antenna and the PCM. Simulated and measured results show that approximately 46.4% of the operating bandwidth is in the range of 7.5–12 GHz (AR < 3 dB) and the gain of the antenna with MPCM is at least 5 dB higher than the reference antenna. Moreover, the monostatic RCS is reduced from 8 to 20 GHz.

scholarly journals Compact 2 × 2 Circularly Polarized Aperture-Coupled Antenna Array for Ka-Band Satcom-on-the-Move Applications

Electronics ◽  
2021 ◽  
Vol 10 (14) ◽  
pp. 1621
Author(s):  
Hisham Baghdadi ◽  
Guillermo Royo ◽  
Ismael Bel ◽  
Francisco Javier Cortés ◽  
Santiago Celma
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Printed Circuit Board ◽  
Layer Structure ◽  
Axial Ratio ◽  
Beam Width ◽  
Unit Cell ◽  
Circuit Board ◽  
High Yield ◽  
Ka Band

This paper presents a novel design of a wideband circular polarization 2 × 2 microstrip antenna array working at Ka-band frequencies, from 27.5 to 31 GHz. This module is highly integrable with new silicon beamformer chips, creating a unit cell that can be part of a large electronically steerable antenna for compact, ultra-low-profile, Satcom-on-the-move (SOTM) platforms. A multi-layer structure fabricated in standard printed circuit board (PCB) technology with high-yield substrates has been used. The radiating elements consist of double-stacked circular patches housed in a cavity and fed by H-shaped aperture coupling. It achieves a bandwidth of 16.5 % with a wide beam-width of 95° in the desired band, which is necessary for wide scanning angles in a large phased array. In the 2 × 2 unit cell, the antenna elements are distributed by means of a sequential rotation technique where the separation between two of them is 5.3 mm in the XY-plane. Broadside beam-widths ranging from 53.4° at 27.5 GHz to 42.1° at 31 GHz are achieved, with boresight directivities from 10.7 to 12.9 dBi, respectively, in both the RHCP and LHCP polarization. Moreover, mutual coupling levels below −20 dB and an axial ratio less than 3 dB in the whole band guarantee a good circular polarization purity.

Ka-Band 8 × 8 Low-Sidelobe Slot Antenna Array Using a 1-to-64 High-Efficiency Network Designed by New Printed RGW Technology

2019 ◽  
Vol 18 (6) ◽  
pp. 1248-1252 ◽  
Author(s):  
Xun Jiang ◽  
Fangxiu Jia ◽  
Yang Cao ◽  
Pan Huang ◽  
Jiyan Yu ◽  
...  
Keyword(s):  
Antenna Array ◽  
High Efficiency ◽  
Slot Antenna ◽  
Ka Band ◽  
Low Sidelobe

scholarly journals 3D Printing of a Monolithic K/Ka-Band Dual-Circular Polarization Antenna-Feeding Network

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
G. Addamo ◽  
M. Lumia ◽  
F. Calignano ◽  
F. Paonessa ◽  
G. Virone ◽  
...  
Keyword(s):  
3D Printing ◽  
Circular Polarization ◽  
Ka Band

Ka-band antipodal fermi-linear tapered slot antenna with a knife edge corrugation

2014 ◽  
Vol 57 (2) ◽  
pp. 485-489 ◽  
Author(s):  
Kiran D. Phalak ◽  
Zouhair Briqech ◽  
Abderazil Sebak
Keyword(s):  
Slot Antenna ◽  
Knife Edge ◽  
Ka Band
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