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. 17, 2015
Filed:
Jun. 25, 2013
Raytheon Company, Waltham, MA (US);
Michael Aidan Gritz, Santa Barbara, CA (US);
Steven Marc Lardizabal, Westford, MA (US);
Zhaoyang Charles Wang, Carlisle, MA (US);
Raytheon Company, Waltham, MA (US);
Abstract
A Dicke-switched radiometer including a signal channel comprising of an antenna for receiving an input signal and a first stage amplification circuit for amplifying an output of the antenna and generating an amplified input signal; a reference channel comprising of a resistive load, a second stage amplification circuit and a matching filter for matching a frequency and an impedance of the amplified input signal to a frequency and an impedance of the amplified reference signal; a Dicke switch coupled to first stage amplification circuit and the matching filter for inputting the amplified input signal and an output of the matching filter to generate a difference signal; a third stage amplification circuit coupled to an output of the Dicke switch for amplifying the difference signal; and a detector coupled to an output of the third stage amplification circuit to obtain the amplified difference signal and generate a detected difference signal.