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Controlling Radiation Beams by Low-Profile Planar Antenna Arrays with Coding Elements.

Xin Ge Zhang1, Wei Xiang Jiang1, Han Wei Tian1

  • 1State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096, China.

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This study introduces low-profile digital coding planar antenna arrays for flexible beam control in wireless systems. These arrays offer advanced functionalities and reduced radar cross-section, enabling new intelligent antenna applications.

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Area of Science:

  • Electromagnetics and Wave Propagation
  • Antenna Theory and Design
  • Metamaterials and Metasurfaces

Background:

  • Beam diversity is crucial for modern radar, communication, and imaging systems.
  • Flexible and cost-effective beam control in antenna arrays remains a significant challenge.

Purpose of the Study:

  • To propose and demonstrate low-profile planar antenna arrays with digital coding elements for enhanced beam control.
  • To achieve flexible manipulation of radiation patterns, including beam splitting, scanning, and deflection.

Main Methods:

  • Design of planar antenna arrays using binary radiating elements with digital codes '0' and '1'.
  • Spatial coding pattern design for controlling radiation characteristics.
  • Integration of coding metasurfaces to reduce radar cross-section while preserving radiation performance.

Main Results:

  • Successful numerical and experimental verification of low-profile, high-gain, lightweight digital antenna arrays in the microwave band.
  • Demonstration of multifarious functionalities like beam splitting, scanning, and deflection through spatial coding.
  • Reduction of radar cross-section achieved without compromising radiation efficiency.

Conclusions:

  • The proposed digital coding planar antenna arrays establish a new paradigm for low-overhead, advanced digital control of radiation patterns.
  • These arrays offer promising applications for multitasked, intelligent antenna devices and next-generation information systems.