Mutual coupling suppression of two dipole antennas backed by optimized reflector

2003 ◽  
Author(s):  
Y. Rikuta ◽  
H. Arai ◽  
Y. Ebine
Keyword(s):  
Mutual Coupling ◽  
Dipole Antennas

scholarly journals Application of Novel Printed Dipole Antenna to Design Broadband Planar Phased Array

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Jie Xu ◽  
Wenbin Dou
Keyword(s):  
Mutual Coupling ◽  
Phased Array ◽  
Coupling Effect ◽  
Dipole Antenna ◽  
Coaxial Cable ◽  
Impedance Bandwidth ◽  
Frequency Range ◽  
Dipole Antennas ◽  
Outer Conductor ◽  
Ground Plate

A broadband planar phased array consisting of 22 linear printed dipole antennas (PDA) is presented in this paper. The element is designed by a coax probe feeding mechanism with a ground plate configuration. The PDA with two arms placed on both sides of a substrate is realized. The inner conductor of the coaxial cable is connected to the PDA’s upper arm, and the outer conductor is connected to the PDA’s lower arm, so it eliminates the balun. The impedance bandwidth of the PDA array can be improved by increasing mutual coupling effect between the adjacent array elements. A dielectric layer, which is integrated on the surface of the antenna, is designed and fabricated to improve the impedance bandwidth and to shield the array. The measured results indicate the active VSWR is less than 3 over the frequency range of 4–20 GHz.

scholarly journals A Subspace-Based Compensation Method for the Mutual Coupling in Concentric Circular Ring Arrays for Near-Field Source Localisation

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Mohammed Jainul Abedin ◽  
Ananda Sanagavarapu Mohan
Keyword(s):  
Parameter Estimation ◽  
Mutual Coupling ◽  
Near Field ◽  
Three Dimensional ◽  
Super Resolution ◽  
Circular Ring ◽  
Dipole Antennas ◽  
Field Source ◽  
Full Wave ◽  
Compensation Approach

We propose a technique for compensating the effect of mutual coupling on parameter estimation that is suitable with any subspace-based super-resolution algorithms. A Concentric circular ring array (CCRA) formed using thin dipole antennas in the receiving mode is employed to estimate the parameters of electromagnetic sources located in the radiating near field of the array. A CCRA geometry that obtains a lowest Cramer-Rao lower bound (CRLB) in the presence of array mutual coupling is chosen for investigation. The mutual coupling among antenna elements of the array would affect the orthogonality of subspaces when MUSIC or ESPRIT algorithms are used for parameter estimation. The proposed method obtains a compensation matrix that restores the orthogonality between the subspaces there by improving the accuracy of estimation. To avoid three-dimensional searches, the range parameter is estimated using a cross-correlation-based method. Numerical simulation using a full-wave electromagnetic (EM) solver is employed to demonstrate the effectiveness of the proposed compensation approach.

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