scholarly journals Asymmetric Shaped-Pattern Synthesis for Planar Antenna Arrays

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
T. M. Bruintjes ◽  
A. B. J. Kokkeler ◽  
G. J. M. Smit
Keyword(s):  
Antenna Arrays ◽  
Analytical Method ◽  
Direction Of Arrival Estimation ◽  
Planar Antenna ◽  
Pattern Synthesis ◽  
Shaped Beam ◽  
Single Output ◽  
Free Region ◽  
Beam Patterns ◽  
Shaped Pattern

A procedure to synthesize asymmetrically shaped beam patterns is developed for planar antenna arrays. As it is based on the quasi-analytical method of collapsed distributions, the main advantage of this procedure is the ability to realize a shaped (null-free) region with very low ripple. Smooth and asymmetrically shaped regions can be used for Direction-of-Arrival estimation and subsequently for efficient tracking with a single output (fully analog) beamformer.

scholarly journals Shaped Beam Pattern Synthesis of Antenna Arrays Using Composite Differential Evolution with Eigenvector-Based Crossover Operator

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Sotirios K. Goudos
Keyword(s):  
Differential Evolution ◽  
Antenna Arrays ◽  
Design Method ◽  
Differential Evolution Algorithm ◽  
Beam Pattern ◽  
Crossover Operator ◽  
Pattern Synthesis ◽  
Shaped Beam ◽  
Rotationally Invariant ◽  
Beam Patterns

This paper addresses the problem of designing shaped beam patterns with arbitrary arrays subject to constraints. The constraints could include the sidelobe level suppression in specified angular intervals, the mainlobe halfpower beamwidth, and the predefined number of elements. In this paper, we propose a new Differential Evolution algorithm, which combines Composite DE with an eigenvector-based crossover operator (CODE-EIG). This operator utilizes eigenvectors of covariance matrix of individual solutions, which makes the crossover rotationally invariant. We apply this novel design method to shaped beam pattern synthesis for linear and conformal arrays. We compare this algorithm with other popular algorithms and DE variants. The results show CODE-EIG outperforms the other DE algorithms in terms of statistical results and convergence speed.

Time-Modulated Antenna Arrays for Circularly Polarized Shaped Beam Patterns

2017 ◽  
Vol 16 ◽  
pp. 1537-1540 ◽  
Author(s):  
Alberto Reyna ◽  
Luz I. Balderas ◽  
Marco A. Panduro
Keyword(s):  
Antenna Arrays ◽  
Circularly Polarized ◽  
Shaped Beam ◽  
Beam Patterns

Synthesis of antenna arrays with shaped-beam patterns

2012 ◽  
Vol 57 (7) ◽  
pp. 689-695 ◽  
Author(s):  
P. N. Bashly ◽  
B. D. Manuilov ◽  
A. A. Morozov
Keyword(s):  
Antenna Arrays ◽  
Shaped Beam ◽  
Beam Patterns

scholarly journals An Antenna Array Sidelobe Level Reduction Approach through Invasive Weed Optimization

2018 ◽  
Vol 2018 ◽  
pp. 1-16 ◽  
Author(s):  
Geng Sun ◽  
Yanheng Liu ◽  
Han Li ◽  
Shuang Liang ◽  
Aimin Wang ◽  
...  
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Invasive Weed Optimization ◽  
Sidelobe Level ◽  
Pattern Synthesis ◽  
Invasive Weed ◽  
Sidelobe Level Reduction ◽  
The Stability ◽  
Beam Patterns ◽  
Level Reduction

The problems of synthesizing the beam patterns of the linear antenna array (LAA) and the circular antenna array (CAA) are addressed. First, an optimization problem is formulated for reducing the maximum sidelobe level (SLL) of the beam patterns. Then, the formulated problem is solved by using the invasive weed optimization (IWO) algorithm. Various simulations are performed to evaluate the effectiveness of the IWO algorithm for the synthesis of the beam patterns of the LAA and the CAA. The results show that IWO has a better performance in terms of the accuracy, the convergence rate, and the stability compared with other algorithms for the SLL reductions. Moreover, the electromagnetic simulation results also show that IWO achieves the best performance for the beam pattern synthesis of the antenna arrays in practical conditions.

Specific Features Pertinent to the Use of Planar Antenna Arrays with Central Symmetry in Interference Cancellers

Vestnik MEI ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 123-128
Author(s):  
Pavel S. Gribov ◽  
◽  
Maria A. Gribova ◽  
Aleksandr Yu. Shatilov ◽  
◽  
...  
Keyword(s):  
Antenna Arrays ◽  
Central Symmetry ◽  
Planar Antenna
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