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Simple generation of orbital angular momentum modes with azimuthally deformed Cassegrain subreflector.
- Source :
- Electronics Letters (Wiley-Blackwell); 9/17/2015, Vol. 51 Issue 19, p1480-1481, 2p, 1 Diagram, 4 Graphs
- Publication Year :
- 2015
-
Abstract
- A parabolic reflector antenna with an azimuthally deformed Cassegrain subreflector is proposed to effectively generate arbitrary orbital angular momentum (OAM) modes. The Cassegrain dual-reflector antenna was fabricated for 18 GHz and measured in the near-field range. The near-field to far-field transformed radiation phase around a full azimuth shows that the proposed antenna generates fields with the l = 1 OAM mode. Simulated and measured feed reflection coefficients are below -- 10 dB for 15.1--21.2 GHz, even though the distance between a horn feed and a deformed subreflector is 15.6 mm, thus it is expected that the proposed structure can be used for a broadband low-profile antenna. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00135194
- Volume :
- 51
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Electronics Letters (Wiley-Blackwell)
- Publication Type :
- Academic Journal
- Accession number :
- 109513706
- Full Text :
- https://doi.org/10.1049/el.2015.1833