Back to Search
Start Over
Exciting Vorticity Through Higher Order Bessel Beams With a Radial-Line Slot-Array Antenna.
- Source :
- IEEE Transactions on Antennas & Propagation; Apr2017, Vol. 65 Issue 4, p2123-2128, 6p
- Publication Year :
- 2017
-
Abstract
- In this communication, it is shown that a nondiffracting vortex beam (i.e., a higher order Bessel beam with azimuthal phase variation) can be generated in the near field by synthesizing an inward cylindrical traveling-wave distribution over a finite aperture antenna. A radial line slot array (RLSA) is then designed to prove the concept. The collimated vortex beam is excited in the proximity of the RLSA, within a region properly defined by the nondiffracting range of the generated beam. The radial dependence of the longitudinal electric field of the vortex-beam magnitude follows a first-order Bessel function, and its phase presents a linear azimuthal variation. Full-wave results validate the generation of the nondiffractive higher order Bessel beam within the radiative near field of the launcher. [ABSTRACT FROM PUBLISHER]
- Subjects :
- VORTEX motion
BESSEL beams
SLOT antenna arrays
APERTURE antennas
VECTOR beams
Subjects
Details
- Language :
- English
- ISSN :
- 0018926X
- Volume :
- 65
- Issue :
- 4
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Antennas & Propagation
- Publication Type :
- Academic Journal
- Accession number :
- 122420531
- Full Text :
- https://doi.org/10.1109/TAP.2017.2670503