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:
Sep. 04, 2001
Filed:
Sep. 21, 1999
Applicant:
Inventors:
Sami R. Wahab, Melbourne, FL (US);
Constantinos S. Kyriakos, Indian Harbour Beach, FL (US);
Charles L. Holecek, Marion, IA (US);
Assignee:
Rockwell Collins, Cedar Rapids, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01S 7/40 ;
U.S. Cl.
CPC ...
G01S 7/40 ;
Abstract
A TCAS receiver/transmitter which uses an improved calibration scheme for improving the ability of the device to transmit in a narrow directional field where the device uses the transmitter frequency source to generate signals for calibration purposes. The calibration uses a technique of simultaneously transmitting from two antennas and manipulating the phase of the signal through successive settings. The signals are monitored by the remaining two antennas and calibration adjustments are made in response thereto.