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公开(公告)号：DE10231156B4
公开(公告)日：2008-10-30
申请号：DE10231156
申请日：2002-07-10
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN , FORSTNER HANS PETER
Abstract: A circuit for providing a base operating voltage for a bipolar transistor includes a U BE multiplier providing, in response to a working-point control current, a working voltage fed to a circuit for reducing the working voltage in order to generate a base operating voltage smaller than a base-emitter voltage drop of a bipolar power transistor. With this, the bipolar power transistor may be maintained in the class C operation in a flexible and robust manner, so that an amplifier with high efficiency is obtained.
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公开(公告)号：DE10204403A1
公开(公告)日：2003-08-21
申请号：DE10204403
申请日：2002-02-04
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN , FORSTNER HANS-PETER
IPC: H01L23/52 , H01L21/3205 , H01L21/822 , H01L23/48 , H01L23/50 , H01L23/64 , H01L27/04
Abstract: A circuit chip has an apparatus for an electrically conductive connection of a terminal thereof to an external reference potential. The apparatus has a parallel connection of a bonding wire and a semiconductor area formed in a substrate of the circuit chip. The semiconductor area is doped higher than the substrate of the circuit chip.
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公开(公告)号：DE10012863C2
公开(公告)日：2003-01-30
申请号：DE10012863
申请日：2000-03-16
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN
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公开(公告)号：DE59708203D1
公开(公告)日：2002-10-17
申请号：DE59708203
申请日：1997-06-25
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN
Abstract: A circuit configuration for digitally setting analog parameters includes at least two analog multiplying devices each having a differential amplifier stage. The differential amplifier stages have differential inputs connected in parallel with one another and driven by an analog bipolar input signal. The differential amplifier stages have outputs coupled to one another cumulatively. The differential amplifier stages receive supply currents which are to be switched on and off individually as a function of a corresponding digital control signal and are graded using binary code.
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公开(公告)号：AT336103T
公开(公告)日：2006-09-15
申请号：AT02750780
申请日：2002-06-07
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WENZEL DIETMAR , WEBER STEPHAN
IPC: H03G3/30
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Patent Agency Ranking
公开(公告)号：DE10131654A1
公开(公告)日：2003-01-16
申请号：DE10131654
申请日：2001-06-29
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WENZEL DIETMAR , WEBER STEPHAN
Abstract: A mobile base station power amplifier (60) uses a digital power control signal (21) and operating point control signal (41) from a D/A converter (40) to set the maximum power required in a given time slot with the converter switched off in inactive time slots.
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公开(公告)号：DE59705451D1
公开(公告)日：2002-01-03
申请号：DE59705451
申请日：1997-06-20
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN
Abstract: A circuit arrangement for setting the operating point of at least one signal transistor (2) driven by alternating signals (1), with a current source (3) that is coupled to a supply potential (8) and to the control input of the signal transistor (2). A regulating transistor (4) has a load path coupled to a reference potential (9) and to the control input of the signal transistor (2). A resistor (5) is connected to the control input of the regulating transistor (4) and to the setting input of the signal transistor (2). A capacitor (6) is connected between the control input of the regulating transistor (4) and the reference potential (9).
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公开(公告)号：DE10002371A1
公开(公告)日：2001-08-09
申请号：DE10002371
申请日：2000-01-20
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN , LIPPERER GEORG
Abstract: A reference stage is provided in order to compensate for manufacturing tolerances, for example relating to the threshold voltage of a transistor. This reference stage has a transistor which is a physical equivalent of the transistor to be trimmed in a radio-frequency amplifier stage. In particular, this reference transistor has the same electrical direct current characteristics as the amplifier transistor. A reference voltage can be tapped off across a resistor on the reference stage and can be supplied to a control amplifier which uses this reference voltage to set the operating point of the radio-frequency amplifier transistor such that manufacturing tolerances are compensated for. Such radio-frequency power amplifiers are used, for example, as transmit amplifiers in mobile radios.
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公开(公告)号：DE50305679D1
公开(公告)日：2006-12-28
申请号：DE50305679
申请日：2003-01-23
Applicant: INFINEON TECHNOLOGIES AG
Inventor： FORSTNER JOHANN-PETER , WEBER STEPHAN
IPC: H01L23/50 , H01L23/52 , H01L21/3205 , H01L21/822 , H01L23/48 , H01L23/64 , H01L23/66 , H01L27/04
Abstract: A circuit chip has an apparatus for an electrically conductive connection of a terminal thereof to an external reference potential. The apparatus has a parallel connection of a bonding wire and a semiconductor area formed in a substrate of the circuit chip. The semiconductor area is doped higher than the substrate of the circuit chip.
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公开(公告)号：DE50111123D1
公开(公告)日：2006-11-16
申请号：DE50111123
申请日：2001-01-05
Applicant: INFINEON TECHNOLOGIES AG
Inventor： WEBER STEPHAN , LIPPERER GEORG
IPC: H03F1/30
Abstract: A reference stage is provided in order to compensate for manufacturing tolerances, for example relating to the threshold voltage of a transistor. This reference stage has a transistor which is a physical equivalent of the transistor to be trimmed in a radio-frequency amplifier stage. In particular, this reference transistor has the same electrical direct current characteristics as the amplifier transistor. A reference voltage can be tapped off across a resistor on the reference stage and can be supplied to a control amplifier which uses this reference voltage to set the operating point of the radio-frequency amplifier transistor such that manufacturing tolerances are compensated for. Such radio-frequency power amplifiers are used, for example, as transmit amplifiers in mobile radios.
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