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1. (WO2018102803) RETRO-DIRECTIVE QUASI-OPTICAL SYSTEM

Pub. No.:    WO/2018/102803    International Application No.:    PCT/US2017/064464
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Tue Dec 05 00:59:59 CET 2017
IPC: H04B 7/02
H04B 10/00
H04K 1/10
H01Q 15/00
H01Q 15/02
H01Q 15/14
Applicants: ARCHIT SYSTEM INC.
TZUANG, Lawrence, Dah-ching
TZUANG, Ching-kuang, C.
Inventors: TZUANG, Lawrence, Dah-ching
TZUANG, Ching-kuang, C.
Title: RETRO-DIRECTIVE QUASI-OPTICAL SYSTEM
Abstract:
The proposed retro-directive quasi-optical system includes at least a lens set and a pixel array. The lens set is positioned on one side of the pixel array and the lens set instantly establishes retro-directive space channels between the pixels in the pixel array and the object(s) distributed in the accessible space defined by the lens set through infinite or finite conjugation. In the pixel array, a number of pixels are arranged as an array and each pixel is composed of at least one pair of transmitter antenna and receiver antenna. To guarantee that the electromagnetic waves transmitted from a pixel into the accessible space may be reflected back to the receiver of the same pixel, the size of each pixel is not larger than the point-spread spot size defined by the lens set, wherein the point-spread spot size can be contributed either from lens diffraction or aberration.