Parallel Mom-Po Method With Out-of-Core Technique for Analysis of Complex Arrays on Electrically Large Platforms

Abstract

Abstract-A Message Passing Interface (MPI) parallel implementation of a hybrid solver that combines the Method of Moments (MoM) with higher order basis functions and Physical Optics (PO) has been successfully used to solve a challenging problem including a 2160-slot waveguide array on an airplane with a maximum dimension larger than 1000 wavelengths. The block-partitioned scheme for the large dense MoM matrix combined with the process-cyclic scheme for the PO discretized triangles is designed to achieve excellent load balance and high parallel efficiency. To break the limitation of physical memory, the parallel out-of-core technique is introduced to tackle large dense systems generated using the MoM formulation. This research provides a solution with reasonable accuracy for solving large on-board antenna problems but has very low memory usage.

Non Linear Optimization Technique for the Reduction of the Frequency Scanning Effect in a Phased Array Based on Broadband Injection-Locked Third Harmonic Self-Oscillating Mixers

“…Since the radiation pattern of the antenna array depends on the array factor and the radiation pattern of the base element, the patch antenna array has been completely characterized through electromagnetic simulations based on the Method of Moments [28]. The influence of the input RF signal frequency on the angle θ m for which the maximum gain is reached has been analyzed and represented in Fig.…”

DIAGONAL HORN GAUSSIAN EFFICIENCY ENHANCEMENT BY DIELECTRIC LOADING FOR SUBMILLIMETER WAVE APPLICATION AT 150 GHz

“…Using the equivalence principle and theS tratton-Chu equation based analysis, the far field antenna patterns can be evaluated by the following integral equation [21][22][23][24]:…”

Accurate and Efficient Analysis of Large Antenna Arrays With Radome on a Large Aircraft

“…There are many methods for solving this kind of problems, such as the high frequency asymptotic methods, full-wave numerical methods and the hybrid full-wave and high frequency methods [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Full-wave numerical methods have been well developed to analyze the slotted-waveguide antenna [5][6][7][8][9].…”

“…However, due to large computation resources required, they usually are applied to analyze radiation by electrically small radome/antenna problems. For the scattering or radiation analysis of electrically large three-dimensional problems in electromagnetic engineering, the high frequency method is usually employed to achieve efficient calculation, such as Ray Tracing (RT), Physical Optics (PO), hybrid full-wave and high frequency methods [10][11][12][13][14]. But when these methods are applied to compute the radiation by a large antenna array with radome on a large aircraft, they usually become inefficient due to multi-scale, multi-regional connectivity and multi-materials problems.…”