US 11,909,115 B2
3-D focus-steering lens antenna
Chi Hou Chan, Hong Kong (HK); Ka Fai Chan, Hong Kong (HK); and Gengbo Wu, Shantou (CN)
Assigned to City University of Hong Kong, Hong Kong (HK)
Filed by City University of Hong Kong, Hong Kong (HK)
Filed on Jun. 4, 2021, as Appl. No. 17/338,699.
Claims priority of provisional application 63/034,534, filed on Jun. 4, 2020.
Prior Publication US 2021/0384638 A1, Dec. 9, 2021
Int. Cl. H01Q 19/06 (2006.01); H01Q 3/14 (2006.01); H01Q 13/02 (2006.01)
CPC H01Q 19/062 (2013.01) [H01Q 3/14 (2013.01); H01Q 13/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A three-dimensional near-field focus-steering antenna for GHz or THz frequencies comprising:
first and second rotatable discrete dielectric metalenses, each metalens including arrays of subwavelength dielectric projections, the discrete dielectric metalenses being counter-rotatable and co-rotatable to change a radial and azimuthal focal position, respectively, the first and second discrete dielectric metalenses being arranged along a z-axis;
a feed source emitting radiation incident on the first discrete dielectric metalens;
a z-axis translator configured to change the relative inter-lens position of the first and second discrete dielectric metalenses to move a position of a focused beam along the z-axis;
the position of the focused beam being scannable within a three-dimensional cylindrical space.