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. 06, 2000
Filed:
May. 04, 1998
Vance H Peterson, Boca Raton, FL (US);
Motorola, Schaumburg, IL (US);
Abstract
A mixer circuit (230) comprises a double balanced mixer (370) including a first pair of transistors (Q3, Q4) and a second pair of transistors (Q5, Q6) and a differential amplifier (330) including a pair of transistors (Q1, Q2) coupled to a first reference voltage (302). A coupling element (C3) is inserted between a common emitter node (391) of the first pair of transistors (Q3, Q4) of the double balanced mixer (370) and the output node of one of the pair of transistors (Q1) of the RF input stage (330), and a coupling element (C4) is inserted between a common emitter node (392) of the second pair of transistors (Q5, Q6) of the double balanced mixer (370) and the output node of the other pair of transistors (Q2) of the differential amplifier (330).