Wide angle scanning conformal phased array on a spherical surface

2013 ◽  
Author(s):  
Altunkan Hizal
Keyword(s):  
Phased Array ◽  
Spherical Surface ◽  
Wide Angle

scholarly journals A Design Approach of Optical Phased Array with Low Side Lobe Level and Wide Angle Steering Range

Photonics ◽  
2021 ◽  
Vol 8 (3) ◽  
pp. 63
Author(s):  
Xinyu He ◽  
Tao Dong ◽  
Jingwen He ◽  
Yue Xu
Keyword(s):  
Phased Array ◽  
Phase Distribution ◽  
Beam Steering ◽  
Side Lobe ◽  
Design Approach ◽  
Optical Antennas ◽  
Side Lobe Level ◽  
Wide Angle ◽  
Spacing Distribution ◽  
Optical Phased Array

In this paper, a new design approach of optical phased array (OPA) with low side lobe level (SLL) and wide angle steering range is proposed. This approach consists of two steps. Firstly, a nonuniform antenna array is designed by optimizing the antenna spacing distribution with particle swarm optimization (PSO). Secondly, on the basis of the optimized antenna spacing distribution, PSO is further used to optimize the phase distribution of the optical antennas when the beam steers for realizing lower SLL. Based on the approach we mentioned, we design a nonuniform OPA which has 1024 optical antennas to achieve the steering range of ±60°. When the beam steering angle is 0°, 20°, 30°, 45° and 60°, the SLL obtained by optimizing phase distribution is −21.35, −18.79, −17.91, −18.46 and −18.51 dB, respectively. This kind of OPA with low SLL and wide angle steering range has broad application prospects in laser communication and lidar system.

scholarly journals A Broadband Conformal Phased Array Antenna on Spherical Surface

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Dan Sun ◽  
Rong Shen ◽  
Xuequan Yan
Keyword(s):  
Phased Array ◽  
Spherical Surface ◽  
Ground Plane ◽  
Array Antenna ◽  
Phased Array Antenna ◽  
Simulated Model ◽  
Conformal Array ◽  
Spherical Structure ◽  
Matching Performance ◽  
Ku Band

A Ku-band wideband conformal array antenna with13×19elements is presented in the paper. The array has a spherical structure, and its element is a proximity-coupled stacked patches antenna with a cavity-backed ground plane. The stacked patches and the cavity produce multiple coupled resonances, which enhance the bandwidth of the element extremely. A simulated model with the reasonable dimensions is framed with the coupling analyses, and the effective simulated results and good computing efficiency are obtained simultaneously. The measured results of the center embedded element in the whole array show a bandwidth exceeding 40%VSWR<2, which is close to the simulated matching performance.

Dual-Band and Low-Profile Differentially Fed Slot Antenna for Wide-Angle Scanning Phased Array

2018 ◽  
Vol 17 (2) ◽  
pp. 259-262 ◽  
Author(s):  
Jiajia Guo ◽  
Shaoqiu Xiao ◽  
Shaowei Liao ◽  
Bingzhong Wang ◽  
Quan Xue
Keyword(s):  
Phased Array ◽  
Dual Band ◽  
Slot Antenna ◽  
Wide Angle ◽  
Low Profile

Impedance Matching Design of a Low-Profile Wide-Angle Scanning Phased Array

2019 ◽  
Vol 67 (10) ◽  
pp. 6401-6409 ◽  
Author(s):  
Fu-Long Jin ◽  
Xiao Ding ◽  
You-Feng Cheng ◽  
Bing-Zhong Wang ◽  
Wei Shao
Keyword(s):  
Phased Array ◽  
Impedance Matching ◽  
Wide Angle ◽  
Low Profile ◽  
Matching Design

scholarly journals Wide-Angle Scanning Phased Array Antenna using High Gain Pattern Reconfigurable Antenna Elements

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
ByungKuon Ahn ◽  
In-June Hwang ◽  
Kwang-Seok Kim ◽  
Soo-Chang Chae ◽  
Jong-Won Yu ◽  
...  
Keyword(s):  
Phased Array ◽  
High Gain ◽  
Array Antenna ◽  
Reconfigurable Antenna ◽  
Wide Angle ◽  
Phased Array Antenna ◽  
Design Guideline ◽  
Phased Array Antennas ◽  
Array Antennas ◽  
Scanning Range

AbstractThis paper presents a wide-angle scanning phased array antenna using high gain pattern reconfigurable antenna (PRA) elements. Using PRA elements is an attractive solution for wide-angle scanning phased array antennas because the scanning range can be divided into several subspaces. To achieve the desired scanning performance, some characteristics of the PRA element such as the number of switching modes, tilt angle, and maximum half-power beamwidth (HPBW) are required. We analyzed the required characteristics of the PRA element according to the target scanning range and element spacing, and presented a PRA element design guideline for phased array antennas. In accordance with the guideline, the scanning range was set as ±70° and a high gain PRA element with three reconfigurable patterns was used to compose an 8x1 array antenna with 0.9 λ0 spacing. After analyzing whether the active element patterns meet the guideline, the array antenna was fabricated and measured to demonstrate the scanning performance. The fabricated array can scan its beam from -70° to 70° by dividing the scanning range into three subspaces. It shows that even if the array antenna has large element spacing, the desired scanning performance can be obtained using the elements designed under the guideline.

A Wideband Phased Array With Broad Scanning Range and Wide-Angle Impedance Matching

2020 ◽  
Vol 68 (8) ◽  
pp. 6022-6031
Author(s):  
Fu-Long Jin ◽  
Xiao Ding ◽  
You-Feng Cheng ◽  
Bing-Zhong Wang ◽  
Wei Shao
Keyword(s):  
Phased Array ◽  
Impedance Matching ◽  
Wide Angle ◽  
Scanning Range

Implementation features of pass type Ka-band wide-angle scanning phased array antennas

2014 ◽  
Author(s):  
M. Ye. Golubtsov ◽  
Yu. S. Rusov ◽  
V. M. Krekhtunov ◽  
S. I. Nefedov
Keyword(s):  
Phased Array ◽  
Wide Angle ◽  
Ka Band ◽  
Phased Array Antennas ◽  
Array Antennas
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