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Wide-angle scanning planar array with quasi-hemispherical-pattern elements.

Ren Wang1, Bing-Zhong Wang2, Changhai Hu1

  • 1Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu, 610054, China.

Scientific Reports
|June 5, 2017
PubMed
Summary
This summary is machine-generated.

This study introduces a novel compact antenna and array designs for wide-angle scanning. The proposed antenna and planar array achieve excellent scanning performance, enabling broader field-of-view applications.

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Area of Science:

  • Antenna theory and design
  • Electromagnetics
  • Array antenna technology

Background:

  • Traditional antenna arrays face limitations in achieving wide-angle scanning capabilities.
  • Increasing the field-of-view scanning range is crucial for advanced radar and communication systems.
  • Compact, low-profile antenna designs are essential for integration into various platforms.

Purpose of the Study:

  • To propose a compact quasi-hemispherical-pattern antenna for enhanced field-of-view.
  • To develop linear and planar wide-angle scanning arrays utilizing the proposed antenna.
  • To demonstrate excellent scanning performance and analyze key parameters like gain fluctuation and side lobe level.

Main Methods:

  • Design and simulation of a compact low-profile antenna with a quasi-hemispherical radiation pattern.
  • Development of two linear arrays and one planar array incorporating the proposed antenna element.
  • Analysis of array performance, including beam scanning range, gain fluctuation, and side lobe level (SLL).

Main Results:

  • The proposed antenna exhibits a quasi-hemispherical radiation pattern, providing uniform coverage in the upper half-space.
  • Linear arrays achieved main beam scanning from -75° to +75° with 16 elements, extending to 86° with 128 elements.
  • The planar array demonstrated scanning from -77° to +77° in specific planes with <5 dB gain fluctuation and < -10 dB SLL.

Conclusions:

  • The developed compact antenna and array designs enable excellent wide-angle scanning performance.
  • The proposed method effectively increases the field-of-view scanning range for both linear and planar arrays.
  • These findings offer a promising solution for applications requiring broad spatial coverage with compact antenna systems.