A Fixed-Frequency Beam-Scanning Leaky-Wave Antenna with Circular Polarization for mmWave Application
A period-reconfigurable leaky-wave antenna (LWA) with circular polarization (CP) and fixed-frequency beam scanning (FFBS) is developed in this article. Operating in the Ka-band, this antenna consists of a low-loss groove gap waveguide (GGW) as the slow-wave transmission structure, a circular split-ring patch array on the top layer for radiation, and a slotted ground between them for energy coupling. Each slot is independently and electrically controlled by a pair of PIN diodes under the coupling slot. Thus, the period length of the patches can be manipulated and an LWA with CP and FFBS is achieved with −1th spatial harmonics radiated. The simulation results show that the bean-scanning range from 61° to 63° can be realized during the observation frequency band, with good circular polarization and a peak gain of 17.1 dBi, which is verified by the measurement.
Authors
- Xingying Huo (ORCID: https://orcid.org/0000-0001-6888-4250)
- Yuchen Ma (ORCID: https://orcid.org/0000-0001-9520-2235)
- Qingjun Zhou (ORCID: https://orcid.org/0000-0002-6109-3445)
- Jiayi Liu (ORCID: https://orcid.org/0000-0002-6995-0747)
Institutions
- China Academy of Information and Communications Technology (CN)
- Liupanshui Normal University (CN)
Publication Details
- Journal
- Photonics
- Published
- 2025-03-17
- DOI
- https://doi.org/10.3390/photonics12030274
- Citations
- 1
- Primary Topic
- Microwave Engineering and Waveguides
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- National Natural Science Foundation of China