We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning.
- Authors
Han, Guodong; Liu, Weihang
- Abstract
A compact circularly polarized non-resonant slotted waveguide antenna array is proposed with the aim of achieving wide-angle scanning, circular polarization, and low side-lobe levels. The designed antenna demonstrates a scanning range of +11° to +13° in the frequency domain and a beam scanning range of −45° to +45° in the phase domain. This design exhibits significant advantages for low-cost two-dimensional electronic scanning circularly polarized arrays. It employs a compact element that reduces the aperture area by 50% compared to traditional circular polarization cavities. Additionally, the staggered array method is employed to achieve an element spacing of 0.57 λ within the azimuth plane. Isolation gaps were introduced into the array to enhance the circular polarization performance of non-resonant arrays. The Taylor synthesis method was employed to reduce the side-lobe levels. A prototype was designed, fabricated, and measured. The results indicate superior radiation efficiency, favorable VSWR levels, and an axis ratio maintenance below 3 dB across the scanning range. The proposed antenna and methodology effectively broaden the beam scanning angle of circularly polarized slotted waveguide array antennas.
- Subjects
SLOT antenna arrays; SLOT antennas; CIRCULAR polarization; ANTENNA arrays; WAVEGUIDE antennas; SUBSTRATE integrated waveguides
- Publication
Sensors (14248220), 2024, Vol 24, Issue 10, p3056
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s24103056