A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications
This article presents a new design for a dual-band circular polarization microstrip patch antenna that can be used in unmanned aerial vehicle (UAV) applications. The proposed antenna consists of an etched circular shape on the radiator side of the antenna with multiple slots and stubs. The bottom si...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2025-02-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/15/4/1816 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850081456788865024 |
|---|---|
| author | Abdulaziz S. Almehmadi Rabah W. Aldhaheri |
| author_facet | Abdulaziz S. Almehmadi Rabah W. Aldhaheri |
| author_sort | Abdulaziz S. Almehmadi |
| collection | DOAJ |
| description | This article presents a new design for a dual-band circular polarization microstrip patch antenna that can be used in unmanned aerial vehicle (UAV) applications. The proposed antenna consists of an etched circular shape on the radiator side of the antenna with multiple slots and stubs. The bottom side comprises a partial ground plane with multiple horizonal, vertical and square slots. These shapes on the front and bottom sides of the antenna are used to keep the resonant frequencies, impedance bandwidth and axial ratio (AR) at the desired values. The antenna operation is within the WiFi frequency bands, achieving maximum gains of 5.01 and 5.27 dBi at 2.4 and 5 GHz, respectively. Circular polarization (CP) is effectively realized through the implementation of opposite truncated corners and intentionally located stubs. The 3 dB axial ratio bandwidth (ARBW) is significantly enhanced, while a defected ground structure (DGS) is utilized to further improve the bandwidth and gain. The optimized antenna has overall dimensions of 40 × 40 × 1.6 mm<sup>3</sup> and demonstrates a wide −10 dB reflection bandwidth of 5.38% (2.396–2.525 GHz) and 9.26% (4.91–5.38 GHz), along with a broad 3 dB axial ratio bandwidth (ARBW) of 380 MHz (2.29–2.67 GHz) and 80 MHz (5–5.08 GHz). The proposed antenna is fabricated using a low-cost FR-4 substrate with a dielectric constant of 4.4 and a loss tangent of 0.02. The fabricated antenna is experimentally characterized to verify the design concept as well as to validate the simulation results. It is found that the experimental measurements correlate very well with the simulation results. A comparison with comparable designs in the literature shows that the proposed antenna provides a higher gain with a relatively reduced size. |
| format | Article |
| id | doaj-art-29789bcb657243ada8bce64e088258bc |
| institution | DOAJ |
| issn | 2076-3417 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj-art-29789bcb657243ada8bce64e088258bc2025-08-20T02:44:43ZengMDPI AGApplied Sciences2076-34172025-02-01154181610.3390/app15041816A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle ApplicationsAbdulaziz S. Almehmadi0Rabah W. Aldhaheri1Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi ArabiaDepartment of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi ArabiaThis article presents a new design for a dual-band circular polarization microstrip patch antenna that can be used in unmanned aerial vehicle (UAV) applications. The proposed antenna consists of an etched circular shape on the radiator side of the antenna with multiple slots and stubs. The bottom side comprises a partial ground plane with multiple horizonal, vertical and square slots. These shapes on the front and bottom sides of the antenna are used to keep the resonant frequencies, impedance bandwidth and axial ratio (AR) at the desired values. The antenna operation is within the WiFi frequency bands, achieving maximum gains of 5.01 and 5.27 dBi at 2.4 and 5 GHz, respectively. Circular polarization (CP) is effectively realized through the implementation of opposite truncated corners and intentionally located stubs. The 3 dB axial ratio bandwidth (ARBW) is significantly enhanced, while a defected ground structure (DGS) is utilized to further improve the bandwidth and gain. The optimized antenna has overall dimensions of 40 × 40 × 1.6 mm<sup>3</sup> and demonstrates a wide −10 dB reflection bandwidth of 5.38% (2.396–2.525 GHz) and 9.26% (4.91–5.38 GHz), along with a broad 3 dB axial ratio bandwidth (ARBW) of 380 MHz (2.29–2.67 GHz) and 80 MHz (5–5.08 GHz). The proposed antenna is fabricated using a low-cost FR-4 substrate with a dielectric constant of 4.4 and a loss tangent of 0.02. The fabricated antenna is experimentally characterized to verify the design concept as well as to validate the simulation results. It is found that the experimental measurements correlate very well with the simulation results. A comparison with comparable designs in the literature shows that the proposed antenna provides a higher gain with a relatively reduced size.https://www.mdpi.com/2076-3417/15/4/1816microstrip patch antennaWiFi bandCPUAVARARBW |
| spellingShingle | Abdulaziz S. Almehmadi Rabah W. Aldhaheri A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications Applied Sciences microstrip patch antenna WiFi band CP UAV AR ARBW |
| title | A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications |
| title_full | A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications |
| title_fullStr | A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications |
| title_full_unstemmed | A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications |
| title_short | A Novel Design of Dual-Band Circularly Polarized Microstrip Patch Antenna for Unmanned Aerial Vehicle Applications |
| title_sort | novel design of dual band circularly polarized microstrip patch antenna for unmanned aerial vehicle applications |
| topic | microstrip patch antenna WiFi band CP UAV AR ARBW |
| url | https://www.mdpi.com/2076-3417/15/4/1816 |
| work_keys_str_mv | AT abdulazizsalmehmadi anoveldesignofdualbandcircularlypolarizedmicrostrippatchantennaforunmannedaerialvehicleapplications AT rabahwaldhaheri anoveldesignofdualbandcircularlypolarizedmicrostrippatchantennaforunmannedaerialvehicleapplications AT abdulazizsalmehmadi noveldesignofdualbandcircularlypolarizedmicrostrippatchantennaforunmannedaerialvehicleapplications AT rabahwaldhaheri noveldesignofdualbandcircularlypolarizedmicrostrippatchantennaforunmannedaerialvehicleapplications |