| 摘要 |
An amplifier, in particular for RF-applications, comprises a circuit board ( 2 ), at least one amplifier stage with at least one transistor package ( 8 ) arranged on the circuit board ( 2 ), and a feedback path ( 12 ) around the at least one transistor package ( 8 ), said feedback path ( 12 ) comprising a feedback element ( 15 ) with at least one capactive (C) element for blocking the flow of direct current through the feedback path ( 12 ) and preferably further comprising at least one inductive (L) and/or resistive element (R). In order to reduce negative effects on the performance of the amplifier due to long printed feedback lines, the feedback path ( 12 ) in an amplifier according to the invention is formed of a feedback bridge ( 9 ) comprising two feedback lines ( 13, 14 ) extending out of the plane of the circuit board ( 2 ) from two contact flags ( 10, 11 ) of the transistor package ( 8 ), and the feedback element ( 15 ) bridging over the transistor package ( 8 ) between the two feedback lines ( 13, 14 ).
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