California Institute of Technology

Jan A Tarsala

Goutam Chattopadhyay

Imran Mehdi

Peter H Siegel

Ken B Cooper

John Strawn Ward

Tomas Bryllert

Robert J Dengler

Nuria Llombart Juan

A three-dimensional imaging radar operating at high frequency e.g., 670 GHz radar using low phase-noise synthesizers and a fast chirper to generate a frequency-modulated continuous-wave (FMCW) waveform, is disclosed that operates with a multiplexed beam to obtain range information simultaneously on multiple pixels of a target. A source transmit beam may be divided by a hybrid coupler into multiple transmit beams multiplexed together and directed to be reflected off a target and return as a single receive beam which is demultiplexed and processed to reveal range information of separate pixels of the target associated with each transmit beam simultaneously. The multiple transmit beams may be developed with appropriate optics to be temporally and spatially differentiated before being directed to the target. Temporal differentiation corresponds to a different intermediate frequencies separating the range information of the multiple pixels. Collinear transmit beams having differentiated polarizations may also be implemented.

Multi-pixel high-resolution three-dimensional imaging radar

Growing community of inventors

Arcadia, CA, United States of America

Jan A Tarsala