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Time-Modulated Antenna Arrays for Ultra-Wideband 5G Applications.

Gonzalo Maldonado1, Alberto Reyna Maldonado1, Luz I Balderas1

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Summary
This summary is machine-generated.

This study optimizes time-modulated antenna arrays for ultra-wideband performance. Bacterial foraging optimization reveals uniform arrays offer better side lobe level (SLL) performance, while non-uniform arrays achieve wider bandwidth.

Keywords:
4D arrayGbacterial foraging optimizationtime-modulated arrayultrawideband array

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Area of Science:

  • Electromagnetics and Antenna Theory
  • Optimization Algorithms
  • Signal Processing

Background:

  • Ultra-wideband (UWB) antenna arrays are crucial for high-speed data transmission.
  • Reducing side lobes and sidebands is essential for efficient UWB performance.
  • Time-modulation offers a novel approach to antenna array design.

Purpose of the Study:

  • To design time-modulated antenna arrays with enhanced UWB performance.
  • To optimize antenna positions and/or time sequences for reduced side lobes and sidebands.
  • To compare the performance of uniform and non-uniform array configurations.

Main Methods:

  • Design of linear antenna arrays with eight UWB disk-notch patch antennas.
  • Formulation of the antenna design problem using bacterial foraging optimization (BFO).
  • Analysis of side lobe level (SLL) and sideband performance for different array configurations.

Main Results:

  • Uniform arrays achieved a side lobe level (SLL) below -20 dB across a 3.37-4.8 GHz range.
  • Non-uniform arrays achieved a wider bandwidth with an SLL below -7 dB across a 2.97-5.26 GHz range.
  • Sideband levels were comparable for both uniform and non-uniform arrays, around -17 dB.

Conclusions:

  • Bacterial foraging optimization is effective for designing time-modulated UWB antenna arrays.
  • A trade-off exists between SLL performance (uniform array) and bandwidth (non-uniform array).
  • The proposed designs offer valuable insights for future UWB antenna array development.