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This study introduces an efficient array pattern synthesis (APS) method for controlling sidelobe levels. The novel approach directly calculates element excitations, improving computation, performance, and implementation for linear antenna arrays.

Keywords:
array pattern synthesismask templatephased arrays antennawaveform pattern

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Area of Science:

  • Electromagnetics and Antenna Theory
  • Signal Processing
  • Computational Electromagnetics

Background:

  • Array Pattern Synthesis (APS) is crucial for designing antenna arrays to match desired radiation patterns.
  • Controlling sidelobe levels is a key challenge in APS for applications requiring high directivity and interference suppression.
  • Conventional APS methods often involve iterative optimization, leading to high computational complexity.

Purpose of the Study:

  • To propose an efficient and direct method for Array Pattern Synthesis (APS) with precise control over sidelobe levels.
  • To develop an algorithm that avoids iterative optimization processes for calculating element excitations.
  • To enhance the computational efficiency, performance, and ease of implementation of APS, particularly for linear antenna arrays.

Main Methods:

  • Design of a mask template that incorporates prescribed sidelobe requirements and waveform pattern.
  • Calculation of element excitations using a direct Fourier transform on the projection of the waveform pattern onto the mask template.
  • Synthesis of the desired array pattern from the computed excitation coefficients without iterative optimization.

Main Results:

  • A direct mathematical formulation for calculating exact element excitations for APS was established.
  • The proposed method demonstrates substantial improvements in computational complexity, performance, and implementation ease compared to traditional techniques.
  • Simulation results verified the efficacy and effectiveness of the novel APS approach for linear antenna arrays.

Conclusions:

  • The developed APS method offers a computationally efficient and direct solution for synthesizing array patterns with controlled sidelobe levels.
  • This approach is particularly advantageous for antenna arrays with a large number of elements, such as linear arrays.
  • The proposed technique represents a significant advancement in APS, offering practical benefits for antenna design and implementation.