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- Title
Coaxial probe‐fed open‐ended waveguide antenna based on sand casting process with filtering characteristics and all‐in‐one structure.
- Authors
Hu, Zhenxin; Wang, Shiyan; Tu, Hanwen; Li, Yin; Yu, Yinhua; Wu, Duo‐Long
- Abstract
In this article, a coaxial probe‐fed open‐ended waveguide filtering antenna with all‐in‐one structure is proposed and fabricated by adopting sand casting process. It is known that for waveguide component with complex internal space, detached parts, and post‐processing assembly are often necessary, while unavoidably resulting in error, air gap and loss. In this context, sand casting process is here utilized to fabricate the whole waveguide structure directly, thus achieving a fully integrated antenna. Besides, by controlling the external couplings from probe feed and free space, the proposed coaxial probe‐fed antenna can provide similar impedance matching to a waveguide‐fed three‐order waveguide filter. Both the frequency‐ and time‐domain reflection coefficients of filter and antenna have been compared and analysed. An antenna prototype is fabricated and measured to validate the proposed design, which provides a successful example of all‐in‐one waveguide filtering antenna.
- Subjects
SAND casting; SUBSTRATE integrated waveguides; COPLANAR waveguides; WAVEGUIDE filters; ANTENNA feeds; IMPEDANCE matching; REFLECTANCE; WAVEGUIDE antennas
- Publication
International Journal of RF & Microwave Computer-Aided Engineering, 2021, Vol 31, Issue 1, p1
- ISSN
1096-4290
- Publication type
Article
- DOI
10.1002/mmce.22494