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:
May. 06, 2003
Filed:
Mar. 06, 2002
Applicant:
Inventors:
Allan Scott Douglas, Tyngsboro, MA (US);
Peter Anthony Volckman, Milton Keynes, GB;
Assignee:
M/A-Com Inc., Lowell, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 7/40 ;
U.S. Cl.
CPC ...
G01S 7/40 ;
Abstract
A method for testing a pulse Doppler radar sensor circuit comprising at least one antenna, and a switch circuit, comprising the steps of 1) configuring said switch circuit such that a first path between an input terminal and a first output terminal and a second path between an input terminal and a second output terminal introduce different phase delays to an input signal, 2) providing an input signal to the switch circuit at said input terminal, and 3) comparing a signal at the first output terminal and a signal at the second output terminal to determine if the sensor circuit is functioning.