Beam-steering in a three-element circular antenna-array

2014 ◽  
Vol 7 (1) ◽  
pp. 45-51
Author(s):  
Rachit Garg ◽  
Gaurav Mishra ◽  
Neetesh Purohit ◽  
Vishal Kesari
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Phase Difference ◽  
Beam Steering ◽  
Rectangular Array ◽  
Low Profile ◽  
Feed Network ◽  
Basic Functions ◽  
Microstrip Circuit ◽  
Circular Antenna Array

A simple and volume efficient circular antenna-array design with a low profile programmable beam rotation mechanism was presented. The proper selections of the rotation vector and the excitation coefficients of rectangular array-elements were made for rotation of the beam. The proposed rotation mechanism was capable to rotate the radiation pattern at any desired speed and to transmit in any desired direction, and the design included the ease of construction. Although simulating the radiation pattern using FEKO EM simulator, two basic functions, the power splitter and the introduction of phase difference, were included in feed network of microstrip circuit to divide the power and then individually feeding the each patch after introducing the desired phase difference.

Focus Beam Synthesis With Circular Antenna Array Based On Radial Waveguide Feed Network

2021 ◽  
pp. 1-1
Author(s):  
Zhao Yang ◽  
Wenxian Zheng ◽  
Daniele Inserra ◽  
Jian Li ◽  
Yongjun Huang ◽  
...  
Keyword(s):  
Antenna Array ◽  
Focus Beam ◽  
Feed Network ◽  
Radial Waveguide ◽  
Circular Antenna Array

Low-profile Antenna Array Based on Fabry–Perot Cavity with Mechanoelectrical Beam Steering

2021 ◽  
Author(s):  
Yelena A. Litinskaya ◽  
Stanislav V. Polenga ◽  
Yury P. Salomatov ◽  
Anastasia A. Baskova
Keyword(s):  
Antenna Array ◽  
Beam Steering ◽  
Low Profile ◽  
Fabry Perot

Beam-steering antenna array based on a butler matrix feed network with CP capability for satellite application

2019 ◽  
Vol 14 (07) ◽  
pp. P07005-P07005 ◽  
Author(s):  
Z. Mousavi ◽  
P. Rezaei ◽  
M. Borhani Kakhki ◽  
T.A. Denidni
Keyword(s):  
Antenna Array ◽  
Beam Steering ◽  
Butler Matrix ◽  
Feed Network

A Low Profile and Low Sidelobe Wideband Slot Antenna Array Feb by an Amplitude-Tapering Waveguide Feed-Network

2015 ◽  
Vol 63 (1) ◽  
pp. 419-423 ◽  
Author(s):  
Guan-Long Huang ◽  
Shi-Gang Zhou ◽  
Tan-Huat Chio ◽  
Hon-Tat Hui ◽  
Tat-Soon Yeo
Keyword(s):  
Antenna Array ◽  
Slot Antenna ◽  
Low Profile ◽  
Low Sidelobe ◽  
Feed Network

scholarly journals Generation of OAM Radio Waves Using Circular Vivaldi Antenna Array

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Changjiang Deng ◽  
Wenhua Chen ◽  
Zhijun Zhang ◽  
Yue Li ◽  
Zhenghe Feng
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Hollow Cylinder ◽  
Phase Difference ◽  
Simple Solution ◽  
Mode Number ◽  
Radio Waves ◽  
Vivaldi Antenna ◽  
Successive Phase

This paper gives a feasible and simple solution of generating OAM-carrying radio beams. Eight Vivaldi antenna elements connect sequentially and fold into a hollow cylinder. The circular Vivaldi antenna array is fed with unit amplitude but with a successive phase difference from element to element. By changing the phase difference at the steps of 0, ±45°, ±90°, ±135°, and 180°, the OAM radio beam can be generated with mode numbers 0, ±1, ±2, ±3, and 4. Simulations show that the OAM states of ±2 and ±3 are the same as the traditional states, while the OAM states of 0, ±1, and 4 differ at the boresight. This phenomenon can be explained by the radiation pattern difference between Vivaldi antenna and tripole antenna. A solution of distinguishing OAM states is also proposed. The mode number of OAM can be distinguished with only 2 receivers.

scholarly journals E-Band Beam-Steerable and Scalable Phased Antenna Array for 5G Access Point

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Md. Mazidul Islam ◽  
Mikko Leino ◽  
Rasmus Luomaniemi ◽  
Jinsong Song ◽  
Risto Valkonen ◽  
...  
Keyword(s):  
Antenna Array ◽  
Phase Shifter ◽  
Low Cost ◽  
Beam Steering ◽  
Active Phase ◽  
Access Point ◽  
Horn Antenna ◽  
Phase Shifters ◽  
Phased Antenna Array ◽  
Feed Network

This paper presents a new implementation of the beam-steerable two-dimensional phased antenna array for the forthcoming 5G networks. The antenna enables easy integration of phase shifters and other active electronics on a single PCB, low-loss feed network, low profile, and beam steering in both azimuth and elevation plane. In addition, the antenna is scalable in the number of elements and it can be made compatible with low-cost mass production in plastic injection molding with a metal coating. The antenna consists of a rectangular waveguide feed network, waveguide-to-PCB transitions, phase shifters on a PCB, and horn antenna radiating elements. The parts have been first designed and simulated individually and the operation of the whole structure is then verified by electromagnetic simulations. The phase shifter used in this work is a meandered microstrip line section, but the structure also enables the implementation of active phase shifters. A four-by-four antenna array prototype was manufactured. The beam-steering properties of the phased antenna array have been tested with radiation pattern measurements at 72.5 GHz, and the measured gains are compared with the simulated ones. The measured gains are 15.2 and 11.2 dBi for the boresight beam, and the beam was steered to 40°.

Sign in / Sign up

Export Citation Format

Share Document