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Related Experiment Video

Updated: Jan 9, 2026

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

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A Pattern Reconfigurable Quasi-Yagi Antenna Array for 3-D Full-Space Coverage.

Ziming Wei¹, Yihao Xu¹, Hao Wang¹

¹Shanghai Collaborative Innovation Center of Intelligent Sensing Chip Technology, School of Communication and Information Engineering, Shanghai University, Shanghai 200444, China.

Sensors (Basel, Switzerland)

|December 11, 2025

Summary

A novel reconfigurable quasi-Yagi antenna offers 3-D full-space coverage by switching between omnidirectional and directional modes. This compact and lightweight antenna is ideal for unmanned aerial vehicles (UAVs).

Keywords:

3-D full-space coverage pattern reconfigurable antenna unmanned aerial vehicle (UAV)

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Published on: July 8, 2013

Area of Science:

Electrical Engineering
Antenna Theory
Electromagnetics

Background:

Reconfigurable antennas are crucial for modern wireless communication systems.
Achieving 3-D full-space coverage with a single antenna element presents significant challenges.

Purpose of the Study:

To propose a pattern reconfigurable quasi-Yagi antenna and array for 3-D full-space coverage.
To enable seamless switching between omnidirectional and directional radiation patterns.

Main Methods:

Design of a quasi-Yagi antenna element with hook-shaped patches, parallel-coupled branches, and a windmill-shaped ground.
Integration of four diodes for pattern reconfiguration via switching operation states.
Array configuration for azimuth and elevation plane pattern control.

Main Results:

The antenna operates in omnidirectional mode (5.02-5.89 GHz, 0.8 dBi gain) and directional mode (4.93-5.81 GHz, 2.4 dBi gain).
The array configuration achieves a peak gain of 4.9 dBi in directional mode and 3.1 dB pattern non-circularity in omnidirectional mode.
Demonstrated 3-D full-space coverage through element selection and diode state switching.

Conclusions:

The proposed reconfigurable antenna provides versatile radiation patterns for comprehensive spatial coverage.
Its compact size, light weight, and excellent performance make it suitable for unmanned aerial vehicle (UAV) applications.
This antenna design advances the capabilities of adaptive antenna systems in wireless platforms.