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Concept and Design of a Multi-Polarization Reconfigurable Microstrip Antenna with Symmetrical Biasing Control.
Filipa Antunes1,2, Amélia Ramos1,2, Tiago Varum2
1Department of Electronics, Telecommunications and Informatics, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
Sensors (Basel, Switzerland)
|April 27, 2024
Summary
This study introduces a novel reconfigurable square microstrip patch antenna for wireless systems. The antenna achieves switchable linear and circular polarizations using PIN diodes for enhanced performance and flexibility.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Antenna Theory
Background:
- Wireless communication systems demand compact, intelligent, and flexible antennas.
- Reconfigurable antennas, especially polarization-reconfigurable ones, are crucial for frequency reuse and mitigating fading.
Purpose of the Study:
- To present a square microstrip patch antenna with reconfigurable polarization.
- To operate in the ISM 5.8 GHz band with controllable feeding.
Main Methods:
- A square microstrip patch antenna design was developed.
- Reconfigurable polarization was achieved by controlling the antenna's feeding using a symmetrical DC voltage and an RF circuit with PIN diodes.
- The antenna was fabricated and its performance was validated through measurements and simulations.
Main Results:
- The antenna demonstrated four distinct states.
- It successfully operated with three polarizations: linear, right-handed circular, and left-handed circular.
- Measurements showed good agreement with simulations for polarization, impedance matching, and radiation patterns.
Conclusions:
- The proposed antenna design effectively achieves polarization reconfigurability.
- This technology enhances flexibility and performance in wireless communication systems.
- The validated concept supports the development of advanced multifunctional antennas.
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