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.:

US 11609324 B1

Date of Patent:

Mar. 21, 2023

Filed:

Jun. 01, 2020

Systems for synthetic aperture radar transmit and receive antennas

Applicant:

Planet Labs Inc., San Francisco, CA (US);

Inventors:

Kiruthika Devaraj, Mountain View, CA (US);

Ming-chun Paul Lee, San Francisco, CA (US);

Assignee:

Planet Labs Inc., San Francisco, CA (US);

Attorney:

KPPB LLP

Primary Examiner:

Bernarr E Gregory

Int. Cl.

CPC ...

G01S 13/90 (2006.01); G01S 7/03 (2006.01); G01S 13/10 (2006.01); H01Q 3/26 (2006.01); H01Q 9/04 (2006.01); H01Q 15/14 (2006.01); H01Q 19/10 (2006.01); H01Q 21/06 (2006.01); H01Q 21/29 (2006.01); G01S 7/02 (2006.01); G01S 13/02 (2006.01); H01Q 1/28 (2006.01); H01Q 3/28 (2006.01); H01Q 3/30 (2006.01); H01Q 19/12 (2006.01);

U.S. Cl.

CPC ...

G01S 13/9058 (2019.05); G01S 7/03 (2013.01); G01S 7/032 (2013.01); G01S 13/10 (2013.01); G01S 13/9011 (2013.01); H01Q 3/2658 (2013.01); H01Q 9/0435 (2013.01); H01Q 15/148 (2013.01); H01Q 19/10 (2013.01); H01Q 21/065 (2013.01); H01Q 21/29 (2013.01); G01S 7/025 (2013.01); G01S 7/026 (2013.01); G01S 2013/0245 (2013.01); H01Q 1/288 (2013.01); H01Q 3/28 (2013.01); H01Q 3/30 (2013.01); H01Q 19/12 (2013.01);

Abstract

Synthetic aperture radar transmit and receive antenna systems and methods of transmitting and receiving radar signals are disclosed. In one embodiment, a transmit and receive antenna system includes a transmit antenna array configured to transmit a plurality of radio frequency transmit signals, the transmit antenna array including a plurality of patch antenna elements mounted to a printed circuit board, each patch antenna element belonging to a subarray, and one or more power amplifiers, each power amplifier feeding a subarray of the patch antenna elements, and a reflectarray receive antenna configured to receive radio frequency signals including a plurality of reflectarray antenna elements mounted to a printed circuit board, at least one antenna feed configured to receive radio frequency signals reflected from the plurality of reflectarray antenna elements, and at least one low noise amplifier electrically connected to the at least one antenna feed.

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