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Inverted S-shaped compact antenna for X-band applications
1Department of Electrical Electronic and Systems Engineering, Faculty of Engineering and Built Environment, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia.
Thescientificworldjournal
|June 5, 2014
Summary
A novel inverted S-shaped patch antenna achieves triple-frequency operation in the X-band. This compact, probe-fed design offers stable gain and consistent efficiency for X-band applications.
Area of Science:
- Electromagnetics and Applied Electrophysics
- Antenna Theory and Design
Background:
- Multifrequency antennas are crucial for modern wireless communication systems.
- Compact antenna designs are highly sought after for portable and integrated devices.
Purpose of the Study:
- To design and validate a novel probe-fed compact inverted S-shaped multifrequency patch antenna.
- To achieve triple-frequency operation within the X-band for enhanced application versatility.
Main Methods:
- A conventional rectangular patch antenna was modified into an inverted S-shape using two rectangular slots.
- Elliptical slots were incorporated into the ground plane to enhance peak gain.
- The antenna's performance was simulated using a high-frequency structural simulator and experimentally verified through a fabricated prototype.
Main Results:
- The proposed antenna demonstrated triple-frequency operation in the X-band with measured -10 dB impedance bandwidths of 5.02% (8.69-9.14 GHz), 9.13% (10.47-11.48 GHz), and 3.79% (11.53-11.98 GHz).
- The fabricated prototype exhibited stable gain, an omnidirectional radiation pattern, and consistent radiation efficiency across the operating bands.
- Simulated and measured data showed good agreement, validating the antenna's design and performance.
Conclusions:
- The novel inverted S-shaped patch antenna is a viable candidate for X-band applications requiring multifrequency capabilities.
- The design offers a compact solution with desirable performance characteristics, including stable gain and efficiency.
- The integration of slots in the patch and ground plane effectively enables triple-frequency operation and gain enhancement.
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