公开(公告)号：JP2001257591A

公开(公告)日：2001-09-21

申请号：JP2001034288

申请日：2001-02-09

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS ,  SCHOELLHORN PETER

IPC: H03M1/18 ,  H03M1/00 ,  H03M1/06 ,  H03M1/12 ,  H03M1/84 ,  H04B1/00 ,  H04B1/06 ,  H04B1/18 ,  H04B1/30 ,  H04Q7/32

Abstract: PROBLEM TO BE SOLVED: To provide an analog front end which is used in a receiver for communication unit and can control a precise driving level. SOLUTION: An analog front end includes plural analog constitution elements (1 to 3) connected to the up stream of an analog/digital converter (4). For precisely controlling the driving levels of the individual analog constitution elements (1 to 3), the input of the analog/digital converter 4 can optionally be connected to one of the analog constitution elements (1 to 3) through a switch (8). Driving level control signals for the analog constitution elements (1 to 3) are generated by evaluating a sample value supplied by the analog/digital converter (4).

公开(公告)号：WO0161861A3

公开(公告)日：2002-04-25

申请号：PCT/EP0101521

申请日：2001-02-12

Applicant: ENGL BERNHARD ,  MENKHOFF ANDREAS ,  INFINEON TECHNOLOGIES AG

Inventor： ENGL BERNHARD ,  MENKHOFF ANDREAS

IPC: H03M1/10 ,  H03M1/12 ,  H03M1/36

CPC classification number: H03M1/1038 ,  H03M1/1023 ,  H03M1/12 ,  H03M1/368

Abstract: An analog/digital converter circuit comprises an analog/digital converter (1) and calibrating agents, preferably in the form of a digital logic, for the auto-calibration of the analog/digital converter (1). This configuration produces a very high quality analog/digital converter (1) with a very low surface area requirement. According to a first embodiment, the calibrating means (2-4) correct any error of the analog/digital converter (1) outside of said analog/digital converter (1). According to a second example of an embodiment, the correction is made inside the analog/digital converter.

公开(公告)号：WO2005013575B1

公开(公告)日：2005-03-24

申请号：PCT/EP2004008277

申请日：2004-07-23

Applicant: INFINEON TECHNOLOGIES AG ,  FECHTEL STEFAN ,  MENKHOFF ANDREAS

Inventor： FECHTEL STEFAN ,  MENKHOFF ANDREAS

IPC: H04L27/26

CPC classification number: H04L27/2647

Abstract: The invention relates to a weighting circuit for a receiver (1), which is designed to receive a multi-carrier signal consisting of carrier signals. According to the invention, the carrier signals are weighted by the weighting circuit (18) in such a way that the parasitic signal energy has the same intensity in all weighted carrier signals. In a preferred embodiment of the invention, the weighting circuit comprises at least one multiplier that multiplies an assigned carrier signal by a stored weighting co-efficient. The stored weighting co-efficients constitute reliability information for the various carrier signals.

Abstract translation: 本发明涉及到加权电路，用于其中设置一种用于接收由载波信号的多载波信号的一组的接收器（1），其中，所述加权电路（18）的权重的载波信号，使得在所有的加权载波信号中的噪声能量是相等的。 在根据本发明的加权电路的优选实施例中，后者具有至少一个乘法器，其将相关联的载波信号乘以存储的加权系数。 所存储的加权系数表示各种载波信号的可靠性信息。

公开(公告)号：DE102005018858B4

公开(公告)日：2009-09-10

申请号：DE102005018858

申请日：2005-04-22

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS ,  GRYSKA HOLGER

IPC: H03H17/06

公开(公告)号：DE102008015925A1

公开(公告)日：2008-11-27

申请号：DE102008015925

申请日：2008-03-27

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS

IPC: H03H17/02

Abstract: A system having a filter is disclosed. One embodiment includes at least two polyphase filter branches, each of the polyphase filter branches including a respective recursive allpass filter, wherein the filter approximates a linear filter.

公开(公告)号：DE502004005709D1

公开(公告)日：2008-01-24

申请号：DE502004005709

申请日：2004-07-23

Applicant: INFINEON TECHNOLOGIES AG

Inventor： FECHTEL STEFAN ,  MENKHOFF ANDREAS

IPC: H04L27/26

Abstract: The invention relates to a weighting circuit for a receiver (1), which is designed to receive a multi-carrier signal consisting of carrier signals. According to the invention, the carrier signals are weighted by the weighting circuit (18) in such a way that the parasitic signal energy has the same intensity in all weighted carrier signals. In a preferred embodiment of the invention, the weighting circuit comprises at least one multiplier that multiplies an assigned a carrier signal by a stored weighting co-efficient. The stored weighting coefficients constitute reliability information for the various carrier signals.

公开(公告)号：DE102004036464A1

公开(公告)日：2006-03-23

申请号：DE102004036464

申请日：2004-07-28

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS

IPC: H04L27/38

公开(公告)号：DE10005605B4

公开(公告)日：2004-04-08

申请号：DE10005605

申请日：2000-02-09

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS ,  SCHOELLHORN PETER

IPC: H03M1/18 ,  H03M1/00 ,  H03M1/06 ,  H03M1/12 ,  H03M1/84 ,  H04B1/00 ,  H04B1/06 ,  H04B1/18 ,  H04B1/30 ,  H04Q7/32

Abstract: An analogue frontend, such as is used, for example, in receivers for communications equipment, comprises a plurality of analogue components (1-3) which are connected upstream of an analogue/digital converter (4). In order to control the drive level of the individual analogue components (1-3) precisely, the input of the analogue/digital converter (4) can optionally be connected via a switch-over device (8) to the output of any one of the analogue components (1-3) and a drive level control signal for the respective analogue component (1-3) can be generated by a digital control device (5) by evaluating the sampled value which is then supplied by the analogue/digital converter (4).

公开(公告)号：DE10005605A1

公开(公告)日：2001-08-30

申请号：DE10005605

申请日：2000-02-09

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS ,  SCHOELLHORN PETER

IPC: H03M1/18 ,  H03M1/00 ,  H03M1/06 ,  H03M1/12 ,  H03M1/84 ,  H04B1/00 ,  H04B1/06 ,  H04B1/18 ,  H04B1/30 ,  H04Q7/32

Abstract: The frontend stage has a number of analogue components (1-3), e.g. filters or amplifiers, coupled to a control device (5), which receive an analogue input signal (x(t) and are followed by an analogue/digital converter (4), converting the analogue input signal into a digital output signal (y(k)). A switching device (8) allows the analogue/digital converter to be coupled to the output of a selected analogue component, the digital output signal evaluated by the control device, for providing the control signals for the analogue components.

公开(公告)号：DE102004052416B4

公开(公告)日：2012-05-10

申请号：DE102004052416

申请日：2004-10-28

Applicant: INFINEON TECHNOLOGIES AG

Inventor： MENKHOFF ANDREAS

IPC: G05B11/42 ,  G05B11/26 ,  G05B13/02

Abstract: Regelkreis mit einstellbarem Filterverhalten und einstellbarer Grenzfrequenz zum Filtern eines Eingangssignals, wobei der Regelkreis einen Subtrahierer enthält, der von dem zu filternden Eingangssignal ein Rückführsignal zur Erzeugung eines Regeldifferenzsignals subtrahiert, das an eine Regelstrecke angelegt wird, deren Ausgangssignal das gefilterte Ausgangssignal des Regelkreises bildet und das durch ein Schleifenfilter zur Erzeugung des Rückführsignals gefiltert wird, wobei das Schleifenfilter mittels eines Filterkoeffizientensatzes, der jeweils mindestens einen Filterkoeffizienten aufweist, einstellbar ist, wobei jeder Filterkoeffizient von einem Einstellparameter abhängt, wobei ein Filterkoeffizientensatz zur Einstellung des Filterverhaltens des Regelkreises selektierbar ist, und wobei die Grenzfrequenz des Regelkreises in Abhängigkeit von dem Einstellparameter extern einstellbar ist.