Title:
METHOD AND DEVICE FOR PROTECTING A HIGH-FREQUENCY POWER AMPLIFIER AGAINST A TERMINATION FAULT
Document Type and Number:
WIPO Patent Application WO/2013/000451
Kind Code:
A3
Abstract:
The invention relates to a mismatch protection circuit for high-frequency power amplifiers in case an impedance mismatch occurs on the output side. In such an event, reflections result, by means of which a part of the power output is fed back into the amplifier output stage. In the highly critical event of a missing termination, i.e. an open circuit or a short circuit, the total high-frequency power output of the amplifier is transmitted back into the amplifier. Such an event can occur during the start-up or during measurements of such amplifiers due to operating and/or handling errors. High-frequency power amplifiers, the output stages of which are designed with transistors, can be thermally loaded by the reflected power output component of the amplifier such that semiconductor components are damaged or even destroyed. According to the invention, this problem is solved by the features of the characterizing part of claims 1 and 8.
Inventors:
KHILLA ABDEL-MESSIAH (DE)
SCHAEUFLER JUERGEN (DE)
SCHAEUFLER JUERGEN (DE)
Application Number:
PCT/DE2012/000625
Publication Date:
February 21, 2013
Filing Date:
June 18, 2012
Export Citation:
Assignee:
TESAT SPACECOM GMBH & CO KG (DE)
KHILLA ABDEL-MESSIAH (DE)
SCHAEUFLER JUERGEN (DE)
KHILLA ABDEL-MESSIAH (DE)
SCHAEUFLER JUERGEN (DE)
International Classes:
H03F1/52
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