Robust Hexagonal Antenna Array with Optimal Diagonal Loading in the Presence of Steering Angle Disparity

Variable Diagonal Loading Based Robust Concentric Hexagonal Antenna Array With Low Side Lobe Level Using Tapering Windows

“…FDL and ODL based CHAA provides higher power and SINR with the increment of disparity angle than MVDR based CHAA. The proposed VDL based CHAA provides the maximum power and higher SINR with the increment of disparity angle compared to other existing CHAAs [16]. Figure 8 shows the output SINR vs. SNR, and Fig.…”

“…For several DOA angle errors, the power received by the CHAA utilizing different robust methods are listed in Table 1. For example, for 2 • DOA error, the proposed VDL based CHAA delivers 88.37% and 78.56% higher output power than existing FDL and ODL [16] based CHAAs, respectively. So, the proposed VDL based CHAA is more robust than existing FDL and ODL [16] based CHAAs.…”

“…Figures 6 and 7 present the output power and SINR comparison of MVDR, FDL, ODL [16] and proposed VDL based CHAA with alteration of DOA error angle. In these figures, we can see that output power and SINR of MVDR based CHAA are reduced very much with a small increment of DOA error angle.…”

“…ODL [14] and VDL [7,15] techniques have been applied on CCAA to make the array system robust whose performance is better than a linear antenna array. ODL robust technique has been exploited in hexagonal antenna array in [16]. Circular array has been compared with hexagonal antenna array using different optimization techniques in [17,18].…”

“…The aim of this paper is to enhance the directivity and robustness in appearance of DOA error and minimize SLL. In this paper, a CHAA using VDL technique is presented in the presence of DOA error which delivers better performance than the existing CHAAs [16] and CCAA [14]. Moreover, some conventional window functions have been modified and applied to CHAA to taper the SLL.…”