Frequency scanning antenna array with enhanced side lobe suppression

2014 ◽  
Author(s):  
N. Boskovic ◽  
B. Jokanovic ◽  
A. Nesic
Keyword(s):  
Antenna Array ◽  
Side Lobe ◽  
Frequency Scanning ◽  
Side Lobe Suppression ◽  
Scanning Antenna

scholarly journals Frequency scanning antenna arrays with pentagonal dipoles of different impedances

2015 ◽  
Vol 12 (1) ◽  
pp. 99-108 ◽  
Author(s):  
Nikola Boskovic ◽  
Branka Jokanovic ◽  
Aleksandar Nesic
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Side Lobe ◽  
Side Lobe Level ◽  
Scanning Angle ◽  
Frequency Scanning ◽  
Wide Range ◽  
Scanning Antenna ◽  
Antenna Characteristics

In this work we present the benefits of using pentagonal dipoles as radiating elements instead of classical printed dipoles in the design of frequency scanning antenna arrays. We investigate how impedance of pentagonal dipoles, which can be changed in a wide range, influences the overall characteristics of the uniform antenna array. Some very important antenna characteristics such as side lobe level, gain and scanning angle are compared for three different antenna arrays consisting of identical pentagonal dipoles with impedances of 500 ?, 1000 ? and 1500 ?.

Near Field Characterization of an Imaging System Based on a Frequency Scanning Antenna Array

2013 ◽  
Vol 61 (5) ◽  
pp. 2874-2879 ◽  
Author(s):  
Carlos Vazquez ◽  
Cebrian Garcia ◽  
Yuri Alvarez ◽  
Samuel Ver-Hoeye ◽  
Fernando Las-Heras
Keyword(s):  
Antenna Array ◽  
Imaging System ◽  
Near Field ◽  
Frequency Scanning ◽  
Scanning Antenna

scholarly journals Printed Antenna Arrays with High Side Lobe Suppression

2008 ◽  
Vol 2008 ◽  
pp. 1-6
Author(s):  
Aleksandar Nešić ◽  
Ivana Radnović ◽  
Zoran Mićić
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Low Cost ◽  
Microwave Circuits ◽  
Side Lobe ◽  
Printed Antenna ◽  
Feed Network ◽  
New Type ◽  
Side Lobe Suppression ◽  
Better Than

The problem of side lobe suppression (SLS) in printed antenna arrays has been investigated in the paper. Influence of several factors that make difficult design and realization of antenna arrays with relatively high SLS has been analyzed. We introduced a new type of printed antenna array with symmetrical pentagonal dipoles and symmetrical tapered feed network with Chebyshev distribution enabling SLS better than 34 dB in E-plane. Agreement between simulated and measured results is very good. The antenna is suitable for integration with other microwave circuits. Presented antenna is low cost and very simple for realization.

Beamforming arrangement for a monopulse frequency scanning antenna array

2016 ◽  
pp. 76-88
Author(s):  
A. V. Suchkov
Keyword(s):  
Numerical Analysis ◽  
Antenna Array ◽  
Sigma Delta ◽  
Parameter Optimisation ◽  
Frequency Scanning ◽  
Scanning Antenna

In the research we develop a waveguide beamforming arrangement for a monopulse frequency scanning antenna array. We study specifics of the sigma delta arrangement suggested and show the ways of eliminating its characteristic limitations. We consider some issues of structural and technological implementations. As a result, we propose the techniques for numerical analysis and parameter optimisation of the electrodynamic arrangement model.

scholarly journals An investigation of side lobe suppression in integrated printed antenna structures with 3D reflectors

2017 ◽  
Vol 30 (3) ◽  
pp. 391-402
Author(s):  
Marija Milijic ◽  
Aleksandar Nesic ◽  
Bratislav Milovanovic
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Antenna Arrays ◽  
Amplitude Distribution ◽  
Side Lobe ◽  
Printed Antenna ◽  
Side Lobe Suppression

The paper discusses the problem of side lobe suppression in the radiation pattern of printed antenna arrays with different 3D reflector surfaces. The antenna array of eight symmetrical pentagonal dipoles with corner reflectors of various angles is examined. All investigated antenna arrays are fed by the same feeding network of impedance transformers enabling necessary amplitude distribution. Considering the different reflector surfaces, the influence of parasitic radiation from feeding network on side lobe suppression is studied to prevent the reception of unwanted noise and to increase a gain.

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