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Low-Profile and Wider-Angle Beam Tilting Parasitic Array Resonator Antenna with Optimized Deflected Ground Plane on
Nur Ain Fatihah Mohd Zainudin1,2, Mohamed Nasrun Osman1,2, Thennarasan Sabapathy1,2
1Faculty of Electronic Engineering & Technology, UniMAP Pauh Putra Main Campus, Universiti Malaysia Perlis (UniMAP), Arau 02600, Malaysia.
Micromachines
|July 8, 2023
Summary
This study presents a reconfigurable antenna for wireless sensor networks (WSNs) that achieves wide-angle beam steering over 30° using minimal RF switches. The antenna offers efficient pattern control for WSN base stations.
Area of Science:
- Electrical Engineering
- Antenna Design
- Wireless Communication
Background:
- Wireless Sensor Networks (WSNs) require antennas with adaptable radiation patterns for efficient communication.
- Achieving wide-angle beam steering often involves complex antenna designs and numerous components.
Purpose of the Study:
- To design and fabricate a low-profile, wide-angle reconfigurable antenna for 2.5-GHz WSN applications.
- To minimize component count and optimize parasitic elements and ground plane for enhanced beam steering capabilities.
Main Methods:
- A coaxial-fed driven element surrounded by four parasitic elements on an FR-4 substrate.
- Integration of RF switches with parasitic elements for radiation pattern control.
- Modification of the ground plane to facilitate beam steering.
Main Results:
- Achieved beam steering exceeding 30° on the xz-plane and an average tilt angle over 10° on the yz-plane.
- Obtained a fractional bandwidth of 4% at 2.5 GHz and an average gain of 2.3 dBi.
- Demonstrated control over beam steering direction via RF switch configurations.
Conclusions:
- The proposed antenna design effectively achieves wide-angle radiation pattern reconfigurability with a simplified structure.
- Its performance characteristics make it suitable for base station applications in wireless sensor networks.
- This antenna offers a cost-effective solution for enhancing WSN communication capabilities.
