Adaptive nulling of a linear dipole array in the presence of mutual coupling

2013 ◽  
Vol 24 (1) ◽  
pp. 30-38 ◽  
Author(s):  
Naser Parhizgar ◽  
Mohammad-Ali Masnadi-Shirazi ◽  
Abbas Alighanbari ◽  
Abbas Sheikhi
Keyword(s):  
Mutual Coupling ◽  
Linear Dipole

scholarly journals Mutual Coupling Effects for Radar Cross Section (RCS) of a Series-Fed Dipole Antenna Array

2012 ◽  
Vol 2012 ◽  
pp. 1-20 ◽  
Author(s):  
H. L. Sneha ◽  
Hema Singh ◽  
R. M. Jha
Keyword(s):  
Mutual Coupling ◽  
Phased Array ◽  
Amplitude Distribution ◽  
Dipole Antenna ◽  
Antenna Aperture ◽  
Feed Network ◽  
Operational Frequency ◽  
Signal Path ◽  
Linear Dipole ◽  
Array Geometry

The estimation of RCS of a phased array depends on various parameters, namely, array geometry, operational frequency, feed network, mutual coupling between the antenna elements and so fourth. This paper presents the estimation of RCS of linear dipole array with series-feed network by tracing the signal path from the antenna aperture into the feed network. The effect of mutual coupling exhibited by the dipole antenna is considered for three configurations namely, side by side, collinear, and parallel in echelon. It is shown that the mutual coupling affects the antenna pattern (and hence RCS) significantly for larger scan angles. Further it is inferred that the RCS of phased array can be optimized by (i) reducing the length of the dipole, (ii) termination of the isolation port of the coupler with a suitable load, and (iii) using suitable amplitude distribution.

Mutual coupling in a linear dipole array of finite size

2005 ◽  
Vol 152 (5) ◽  
pp. 324 ◽  
Author(s):  
Y.P. Xi ◽  
D.G. Fang ◽  
Y.X. Sun ◽  
Y.L. Chow
Keyword(s):  
Mutual Coupling ◽  
Finite Size ◽  
Linear Dipole

Mutual coupling in linear dipole arrays

1972 ◽  
Vol 20 (5) ◽  
pp. 651-653 ◽  
Author(s):  
J. Scherer ◽  
A. Neureuther
Keyword(s):  
Mutual Coupling ◽  
Linear Dipole

scholarly journals Scattering Analysis of a Compact Dipole Array with Series and Parallel Feed Network including Mutual Coupling Effect

2013 ◽  
Vol 2013 ◽  
pp. 1-12
Author(s):  
H. L. Sneha ◽  
Hema Singh ◽  
R. M. Jha
Keyword(s):  
Cross Section ◽  
Mutual Coupling ◽  
Phased Array ◽  
Coupling Effect ◽  
Radar Cross Section ◽  
Scattering Cross ◽  
Stealth Technology ◽  
Feed Network ◽  
Feed Networks ◽  
Linear Dipole

The current focus in defense arena is towards the stealth technology with an emphasis to control the radar cross-section (RCS). The scattering from the antennas mounted over the platform is of prime importance especially for a low-observable aerospace vehicle. This paper presents the analysis of the scattering cross section of a uniformly spaced linear dipole array. Two types of feed networks, that is, series and parallel feed networks, are considered. The total RCS of phased array with either kind of feed network is obtained by following the signal as it enters through the aperture and travels through the feed network. The RCS estimation of array is done including the mutual coupling effect between the dipole elements in three configurations, that is, side-by-side, collinear, and parallel-in-echelon. The results presented can be useful while designing a phased array with optimum performance towards low observability.

Influence of the Aperture Edge Diffraction Effects on the Mutual Coupling Compensation Technique in Small Planar Antenna Arrays

2011 ◽  
Vol 57 (1) ◽  
pp. 115-120 ◽  
Author(s):  
Mariusz Zamłyński ◽  
Piotr Słobodzian
Keyword(s):  
Antenna Arrays ◽  
Mutual Coupling ◽  
Planar Antenna ◽  
Sidelobe Level ◽  
Edge Diffraction ◽  
Narrow Angle ◽  
Compensation Technique ◽  
Diffraction Effects ◽  
Linear Antenna Arrays

Influence of the Aperture Edge Diffraction Effects on the Mutual Coupling Compensation Technique in Small Planar Antenna Arrays In this paper the quality of a technique to compensate for mutual coupling (and other phenomena) in small linear antenna arrays is investigated. The technique consists in calculation of a coupling matrix, which is than used to determine corrected antenna array excitation coefficients. Although the technique is known for more than 20 years, there is still very little information about how different phenomena existing in a real antenna arrays influence its performance. In this paper two models of antenna arrays are used. In the first model the effect of mutual coupling is separated from the aperture edge diffraction. In the second model antenna both mutual coupling and aperture edge diffraction effects are included. It is shown that mutual coupling itself can be compensated very well and an ultralow sidelobe level (i.e. -50 dB) could be achieved in practice. In the presence of diffraction effects -46.3 dB sidelobe level has been attained, but radiation pattern can be controled only in narrow angle range (i.e. up to ±60°).

Survey on Mutual Coupling Reduction Techniques for Imaging Radar Application

2014 ◽  
Vol 3 (3) ◽  
pp. 28-32
Author(s):  
C. Mekala ◽  
◽  
P. Saranya ◽  
V. Sathya Narayanan ◽  
◽  
...  
Keyword(s):  
Mutual Coupling ◽  
Imaging Radar ◽  
Reduction Techniques ◽  
Mutual Coupling Reduction
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