Millimeter-wave transreflector and system for generating a collimated coherent wavefront

A planar multi-layer transreflector for generating collimated coherent energy comprising:

• three metallic layers, each having a plurality of rectangles arranged in a grid pattern radially varying in size within each of a plurality of circumferential regions;
• and
• two insulating layers, each disposed between two of the metallic layers,
• wherein the plurality of rectangles are electrically coupled by connecting lines in either an x-direction or a y-direction.

A system for generating collimated coherent millimeter-wave energy comprising:

• a planar multilayer transreflector comprising a plurality of insulating layers arranged between metallic layers;
• and
• a millimeter-wave source positioned at a focus of the transreflector to provide an incident millimeter-wave signal,
• wherein the metallic layers each comprise a plurality of rectangles arranged in a grid pattern radially varying in size within circumferential regions to allow the multilayer transreflector to substantially reflect a first portion of the incident millimeter-wave signal and to substantially transmit remaining portions of the incident millimeter-wave signal through the transreflector, and
• wherein the first portion has a polarization substantially orthogonal to the incident millimeter-wave signal.