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A 3-D Luneburg Lens Antenna Fabricated by Polymer Jetting Rapid Prototyping.
- Source :
-
IEEE Transactions on Antennas & Propagation . Apr2014 Part 2, Vol. 62 Issue 4, p1799-1807. 9p. - Publication Year :
- 2014
-
Abstract
- In this work, we designed, built, and tested a low-gain 20 dBi Luneburg Lens antenna using a rapid prototyping machine as a proof of concept demonstrator. The required continuously varying relative permittivity profile was implemented by changing the size of plastic blocks centered on the junctions of a plastic rod space frame. A 12-cm (4\lambda0 at 10 GHz) diameter lens is designed to work at X-band. The effective permittivity of the unit cell is calculated by effective medium theory and simulated by full-wave finite-element simulations. The fabrication is implemented by a polymer jetting rapid prototyping method. In the measurement, the lens antenna is fed by an X-band waveguide. The measured gain of the antenna at X-band is from 17.3 to 20.3 dB. The measured half-power beam width is from 19^\circ to 12.7^\circ while the side lobes are about 25 dB below the main peak. Good agreement between simulation and experimental results is obtained. [ABSTRACT FROM PUBLISHER]
- Subjects :
- *LENS antennas
*RAPID prototyping
*PERMITTIVITY
*WAVEGUIDES
*ANTENNAS (Electronics)
Subjects
Details
- Language :
- English
- ISSN :
- 0018926X
- Volume :
- 62
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Antennas & Propagation
- Publication Type :
- Academic Journal
- Accession number :
- 95635207
- Full Text :
- https://doi.org/10.1109/TAP.2013.2297165