An L‐Band Dual‐Frequency Pulse Suppression Navigation Antenna for UAVs
ABSTRACT This paper presents an L‐band dual‐frequency pulse suppression navigation antenna for UAVs in complex electromagnetic environments. It utilizes a double‐layer FR4 substrate sized with a 5 mm air dielectric layer in between. A single‐feed probe simultaneously feeds the layers at 1.176 and 1.575 GHz. Circular polarization is achieved by eliminating the corners of the rectangular patches on both layers and L‐shaped truncation on the lower layer. A cross‐shaped slot and four “irregular” triangles are etched on both layers for antenna miniaturization. Finally, NXP BAP51‐02 PIN diodes connect rectangular strips to the patches. The PIN diode is in reverse bias during navigation, and the antenna operates at 1.176 and 1.575 GHz. When high‐power electromagnetic energy occurs, the PIN diodes undergo reversible breakdown and shift the antenna's center frequency to 1.019 and 1.416 GHz, causing interference to fall within the stop bands to suppress signal reception. The measurements are consistent with the simulation, demonstrating that the dual‐frequency L‐band antenna meets the navigation requirements for UAVs with pulse suppression functions in the presence of interference.
Authors
- Hongwei Song (ORCID: https://orcid.org/0000-0003-1928-8182)
- Wang Li (ORCID: https://orcid.org/0000-0003-2054-1392)
- Xuan Lu (ORCID: https://orcid.org/0009-0005-7027-7667)
- Zelong Xiao
- Shuzhi Diao (ORCID: https://orcid.org/0000-0003-3843-6881)
Institutions
- Shanxi University (CN)
- Nanjing University of Science and Technology (CN)
- Nanjing Xiaozhuang University (CN)
- Shanxi Jincheng Anthracite Mining Group (China) (CN)
- Shanxi Science and Technology Department (CN)
Publication Details
- Journal
- Microwave and Optical Technology Letters
- Published
- 2025-11-30
- DOI
- https://doi.org/10.1002/mop.70470
- Primary Topic
- Advanced Antenna and Metasurface Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00