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. 24, 2009
Filed:
Oct. 29, 2004
Jorg Langenberg, Dorsten, DE;
Thomas Liebermann, Munich, DE;
Werner Simburger, Haar, DE;
Marc Tiebout, Munich, DE;
Hans-dieter Wohlmuth, Munich, DE;
Jorg Langenberg, Dorsten, DE;
Thomas Liebermann, Munich, DE;
Werner Simburger, Haar, DE;
Marc Tiebout, Munich, DE;
Hans-Dieter Wohlmuth, Munich, DE;
Infineon Technologies AG, Neubiberg, DE;
Abstract
Integrated circuit including a mixer circuit, which has a first circuit section, a second circuit section, and a transformer. The first circuit section has two radiofrequency terminals. The second circuit section has two reference oscillator terminals, an active mixer unit with a signal-amplifying unit, and two intermediate frequency terminals. The active mixer unit and the signal-amplifying unit have a common current path. The transformer directly electrically decouples the two radiofrequency terminals from the active mixer unit, and couples the first circuit section and the second circuit section together such that each of the two circuit sections is separately supplied with a full operating voltage of the integrated circuit. The integrated circuit may additionally include a second transformer connected between the active mixer unit and the two intermediate frequency terminals.