US 11,923,617 B2
Apparatus for reflecting electromagnetic waves and method of operating such apparatus
Mohammed Alloulah, Cambridge (GB); Zoran Radivojevic, Cambridge (GB); Howard Huang, New York, NY (US); and Fahim Kawsar, Cambridge (GB)
Assigned to Nokia Technologies Oy, Espoo (FI)
Appl. No. 17/289,086
Filed by Nokia Technologies Oy, Espoo (FI)
PCT Filed Oct. 31, 2018, PCT No. PCT/EP2018/079863
§ 371(c)(1), (2) Date Apr. 27, 2021,
PCT Pub. No. WO2020/088755, PCT Pub. Date May 7, 2020.
Prior Publication US 2022/0006202 A1, Jan. 6, 2022
Int. Cl. H01Q 3/20 (2006.01); G01S 13/75 (2006.01); H01Q 3/44 (2006.01); H01Q 9/04 (2006.01); H01Q 15/00 (2006.01); H01Q 15/14 (2006.01); H01Q 15/16 (2006.01); H01Q 19/10 (2006.01)
CPC H01Q 3/20 (2013.01) [G01S 13/756 (2013.01); H01Q 3/44 (2013.01); H01Q 9/0407 (2013.01); H01Q 15/002 (2013.01); H01Q 15/14 (2013.01); H01Q 15/141 (2013.01); H01Q 15/147 (2013.01); H01Q 15/148 (2013.01); H01Q 15/165 (2013.01); H01Q 19/106 (2013.01)] 19 Claims
OG exemplary drawing
 
1. Apparatus comprising:
at least one movable reflective surface that reflects electromagnetic waves; and
at least one actuator coupled with the at least one movable reflective surface, wherein:
said at least one actuator at least temporarily drives a linear displacement of all of said at least one movable reflective surface in a direction substantially normal to the at least one movable reflective surface; and
said linear displacement is driven in an oscillating motion having altering frequency to mechanically modulate the reflected electromagnetic waves to encode a bit sequence of data into the reflected electromagnetic waves;
wherein the apparatus encodes the bit sequence of data into the reflected electromagnetic waves using pulse compression linear frequency modulation.