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Related Experiment Videos

Compact Reconfigurable Antenna with an Omnidirectional Pattern and Four Directional Patterns for Wireless Sensor

Ren Wang1, Bing-Zhong Wang2, Wei-Ying Huang3

  • 1Institute of Applied Physics, University of Electronic Science and Technology of China, Chengdu 610054, China. rwang.uestc@hotmail.com.

Sensors (Basel, Switzerland)
|April 20, 2016
PubMed
Summary

A novel compact reconfigurable antenna offers both omnidirectional and four directional modes. This adaptable antenna design enables 360° coverage, ideal for smart wireless sensor systems.

Keywords:
compact antennaomnidirectional and directional patternsreconfigurable antennawireless sensor system

Related Experiment Videos

Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Antenna Theory

Background:

  • Reconfigurable antennas are crucial for modern wireless systems, offering adaptability.
  • Existing designs often compromise on size, pattern diversity, or complexity.
  • There is a need for compact antennas with multiple radiation modes for versatile applications.

Purpose of the Study:

  • To propose and demonstrate a compact reconfigurable antenna.
  • To achieve both omnidirectional and four distinct directional radiation patterns.
  • To ensure the directional patterns cover a full 360° range.

Main Methods:

  • Design of a reconfigurable antenna with a main radiator and parasitic elements on a dielectric substrate.
  • Utilizing diodes on parasitic elements to switch between radiation modes.
  • Analysis of antenna dimensions and radiation pattern characteristics.

Main Results:

  • The proposed antenna successfully operates in omnidirectional and four directional modes.
  • The directional modes provide nearly orthogonal main beam directions.
  • The directional beams collectively cover 360° in the horizontal plane.
  • The antenna exhibits compact dimensions (0.70λ × 0.53λ × 0.02λ).

Conclusions:

  • A compact, reconfigurable antenna with versatile radiation patterns has been developed.
  • The antenna's design allows for seamless switching between omnidirectional and directional coverage.
  • Its simple structure and small size make it suitable for smart wireless sensor systems.