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This study introduces a novel lens antenna capable of generating both broadside and conical beams simultaneously. Fabricated using 3D printing, this antenna offers high gain and broad bandwidth for Ku-band applications.

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Area of Science:

  • Antenna Engineering
  • Electromagnetics
  • Microwave Technology

Background:

  • Traditional antennas often struggle to achieve simultaneous broadside and conical radiation patterns.
  • Complex antenna designs can be costly and difficult to fabricate.
  • Achieving broadband performance with high gain remains a key challenge in antenna design.

Purpose of the Study:

  • To present a novel lens antenna design for simultaneous broadside and conical beam generation.
  • To utilize a simple feed structure for efficient pattern generation.
  • To validate the antenna's performance through simulation and experimental fabrication.

Main Methods:

  • Design of a Ku-band lens antenna using the ray inserting method.
  • Utilization of a circular patch ring and RF connector as a two-port feed.
  • Simulation using CST microwave studio and fabrication via 3D printing with PETG material.
  • Accurate measurement of PETG electromagnetic characteristics in the Ku band.

Main Results:

  • The lens antenna successfully generates simultaneous broadside and conical beams.
  • The conical radiation pattern exhibits broadband characteristics due to effective source matching.
  • Simulations and experiments confirm the antenna's good performance across a wide frequency bandwidth.
  • The fabricated antenna demonstrates high gain and broad bandwidth.

Conclusions:

  • The proposed lens antenna offers a simple yet effective solution for generating dual radiation patterns.
  • The use of 3D printing and PETG material provides a cost-effective fabrication method.
  • The antenna's high gain and broad bandwidth make it suitable for various Ku-band applications.