The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2012
Filed:
Oct. 15, 2009
Ken B. Cooper, La Crescenta, CA (US);
Robert J. Dengler, Walnut, CA (US);
Peter H. Siegel, La Canada, CA (US);
Goutam Chattopadhyay, Pasadena, CA (US);
John S. Ward, Roanoke, IN (US);
Nuria Llombart Juan, Alboraya, ES;
Tomas E. Bryllert, Göteborg, SE;
Imran Mehdi, South Pasadena, CA (US);
Jan A. Tarsala, Arcadia, CA (US);
Ken B. Cooper, La Crescenta, CA (US);
Robert J. Dengler, Walnut, CA (US);
Peter H. Siegel, La Canada, CA (US);
Goutam Chattopadhyay, Pasadena, CA (US);
John S. Ward, Roanoke, IN (US);
Nuria Llombart Juan, Alboraya, ES;
Tomas E. Bryllert, Göteborg, SE;
Imran Mehdi, South Pasadena, CA (US);
Jan A. Tarsala, Arcadia, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
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.