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:
Dec. 10, 1996
Filed:
Jun. 07, 1994
Hans Sapotta, Heilbronn, DE;
Heinz Rinderle, Heilbronn, DE;
Temic Telefunken Microelectronic GmbH, Heilbronn, DE;
Abstract
HF mixing stage in the form of a common-base circuit including: two bipolar amplifying transistors; two switching stages each assigned to an amplifying transistor and each having two emitter-coupled bipolar switching transistors and with two signal sources which supply the bases of the switching transistors with superimposed signals; two nodes at which the emitters of the switching transistors are connected to the collector of the associated amplifying transistor; two further output nodes at which the collectors of each of two switching transistors in different switching stages are connected together; circuit elements for electrical isolation through which the emitters of the amplifying transistors are connected together; an input signal source with associated internal resistor of which the one terminal is connected via the circuit input to the circuit elements for electrical isolation and the other terminal is connected to reference potential and whose signal is to be transposed into another frequency range through the mixing stage; and wherein: the two bipolar amplifying transistors are of different conduction type, and the two switching transistors of a respective switching stage are of the same conduction type as the associated bipolar amplifying transistor.