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:
Jul. 31, 2007
Filed:
Dec. 12, 2005
Applicant:
Danny F. Ammar, Windermere, FL (US);
Inventor:
Danny F. Ammar, Windermere, FL (US);
Assignee:
Xytrans, Inc., Orlando, FL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A radiometer system includes a dual channel, quadrature hybrid amplifier circuit that receives an antenna signal and a known reference signal to equalize gain in two parallel gain stages. A detector circuit receives a signal from the quadrature hybrid amplifier circuit and detects the signals to form a detected output for eliminating sensitivity to gain variations, improving dynamic range of the input signal, and reducing calibration requirements. A log ratio amplifier receives and linearizes the detected output. An integrator circuit receives a signal from the log ratio amplifier and sums the signal over an observation.