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:
Jun. 27, 1995
Filed:
Dec. 10, 1993
Virender K Sadhir, Roanoke, VA (US);
ITT Corporation, New York, NY (US);
Abstract
A double balanced microstrip mixer circuit for a monolithic microwave integrated circuit comprising a diode ring modulator coupled to a first balun for supplying radio frequency signals to the mixer circuit and a second balun for supplying a signal generated locally to the mixer circuit, two outputs leading from the diode ring modulator for providing an intermediate frequency signal, a first pair of circuits coupled between the first balun and the diode ring modulator and a second pair of circuits coupled between the second balun and the diode ring modulator, for enabling broadband frequencies to be applied to the diode ring modulator independent of impedances created by the first and second baluns. The circuit further includes two low pass filters each coupled to one of the two outputs for rejecting unwanted feed through and a in-phase combiner coupled to the low pass filters.