1. 3D printed Luneburg lens antenna for millimeter wave system Min Liang and Hao Xin Electrical and Computer Engineering Department, University of Arizona, Tucson, Arizona, 85721, USA
Introduction of Luneburg lens
Every point on the surface of an ideal Luneburg Lens is the focal point of a plane wave incident from the opposite side.
Permittivity distribution:
3D printed Luneburg lens with W-band waveguide adapter using rapid prototyping technique
Light weight lens created using thin film and conductive ink based approach
Discrete polymer cubes with different size to control the dielectric constant distribution of the lens
Optical path of Luneburg lens
Measured radiation pattern of a 36 mm diameter Luneburg lens at 80 GHz
Antenna gain with different size
Luneburg lens antenna based wireless system
Luneburg lens based Direction Finding System
Luneburg lens based Electronically Beam Scanning System
Advantages of Luneburg lens antenna:
Beam Scanning
Broadband behavior
High gain
The ability to form multiple beams
W-band horn antenna as feed
36 detectors
Fan Beam
Beam Nulling
Estimated direction compared with real direction
77 GHz Lens
(36 mm diameter)
Averaged error for all the incident angle = 0.14 degree
Luneburg lens with 36 detectors mounted around the surface
Setup for channel and system performance measurement
5G MIMO communication
Automotive radar for autonomous transporation
5 G communication Massive MIMO
T/R units
Luneburg lenses
T/R units
Luneburg lenses