Single beam patterns radiated by linear sources degrade as their maxima points toward endfire direction. Different source geometries are therefore to be investigated and compared to achieve better angular coverage. We choose to perform this by analyzing the characteristics of the linear operator connecting the current source to the far field in a simplified 2D geometry through its Singular Value Decomposition. Two indices are introduced and found useful to achieve geometry optimization. First the case of continuous sources is examined and then the results are extended to discrete (array) sources. It is found that, while the best solution is a conformal semi circumference source, linear sources arranged at angles provide nearly identical single beam patterns pointing in different directions to provide a hemispherical coverage.
Source Geometry Optimization for Hemispherical Radiation Pattern Coverage
LEONE, Giovanni
2016
Abstract
Single beam patterns radiated by linear sources degrade as their maxima points toward endfire direction. Different source geometries are therefore to be investigated and compared to achieve better angular coverage. We choose to perform this by analyzing the characteristics of the linear operator connecting the current source to the far field in a simplified 2D geometry through its Singular Value Decomposition. Two indices are introduced and found useful to achieve geometry optimization. First the case of continuous sources is examined and then the results are extended to discrete (array) sources. It is found that, while the best solution is a conformal semi circumference source, linear sources arranged at angles provide nearly identical single beam patterns pointing in different directions to provide a hemispherical coverage.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.