LIGHT DETECTING AND RANGING (LiDAR) DEVICES AND THE LIKE
AssigneeAdvanced Micro Foundry Pte. Ltd.
InventorsGuo Qiang, Patrick LO, Bo LI, Lian Xi Larry LIA
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Abstract
An antenna or antenna array for a steerable light beam, the antenna array comprising a plurality of linear antenna arrays (100), each linear antenna array comprising: a plurality of antenna elements (104); a waveguide (102) supporting the antenna elements having a length and a thickness; and a control element (400, 402, 404), adjacent to the waveguide, arranged to induce a change in refractive index along at least a part of the length of the waveguide and in at least a part of the thickness of the waveguide, wherein the change in refractive index in the waveguide causes a phase shift in light emitted via each of the plurality of antenna elements.
Claims15
An antenna or antenna array for a steerable light beam, the antenna array comprising a plurality of linear antenna arrays (100), each linear antenna array comprising:
- a plurality of antenna elements (104);
- a waveguide (102) supporting the antenna elements having a length and a thickness;
- a transverse phase shifter (200) located at an end of the waveguide;
- and
- a control element (400, 402, 404), adjacent to the waveguide, arranged to induce a change in refractive index along at least a part of the length of the waveguide and in at least a part of the thickness of the waveguide,
- wherein the control elements define a longitudinal phase shifter extending along the length of the waveguide, wherein the control elements comprise a pair of doped regions (400, 402) located on either side of the waveguide and separated by the waveguide,
- wherein the change in refractive index in the waveguide causes a phase shift in light emitted via each of the plurality of antenna elements.
Dependencies are inferred from the claim text.