Abstract: A device for processing data which is to be transmitted by radio, with the data to be transmitted being in the form of a digital baseband signal (DAT1), has a filter unit (301) for pulse shaping and oversampling of the digital baseband signal (DAT1), a predistortion unit (302, 303) for predistortion of the filtered and oversampled digital baseband signal (DAT2), and a control unit (304, 313) for controlling the predistortion unit (302, 303) as a function of the digital baseband signal (DAT1).

Abstract: One embodiment of the present invention relates to a method for transistor matching. The power transmitter comprises a first, second, and third amplification path. The paths are selectively activated and deactivated to output a received signal with high efficiency and linearity. The first amplification path is configured to receive a first signal and output a first amplified signal to a first port of a output power combiner when activated and provide an impedance that results in a high reflection factor when deactivated. The second amplification path is configured to receive a second signal with 90° phase shift with respect to the first signal and output a second amplified signal to a second port of the combiner when activated and provide an impedance that results in a high reflection factor when deactivated.

Abstract: A modulator arrangement includes a power amplifier which receives a carrier signal and has a current control input and a voltage supply input. The modulator arrangement further includes a supply voltage modulator having an output coupled to the voltage supply input and an input coupled to the data input and a bias current modulator with an output coupled to the current control input and an input coupled to the data input. A control unit is provided which has a power control output coupled to the supply voltage modulator and to the bias current modulator to control the supply voltage modulator and the bias current modulator depending on a power control signal.

Abstract: A voltage supply arrangement is proposed, which provides a voltage from a first power range in a first operating mode and from a second power range in a second operating mode, to a first electrical load. The voltage supply arrangement includes a voltage converter which is coupled on the input side to a voltage input of the voltage supply arrangement and on the output side to a first connection of a first switch, which is connected at a second connection to a voltage output of the voltage supply arrangement for connection of a first electrical load. The voltage supply arrangement further includes a second switch, which is coupled at a first connection to the voltage input and at a second connection to the voltage output, and a drive circuit, which is configured to set the first and the second switch to the first or the second operating mode in response to a control signal.

Abstract: A method is proposed for signal processing with predistortion. An amplifier circuit is provided for this purpose, whose operating states are characterized by at least one characteristic variable. A digital modulation signal having two components (R, ?), as well as a power word (LS), derived from the first component (R), are produced, and an operating state of the at least one amplifier circuit is then determined by recording of the characteristic variable. The power word (LS) is compared with the reference value and used to decide whether to predistort the first and/or the second component. A table with various predistortion coefficients is selected from at least two tables, depending on the operating state of the amplifier circuit. One predistortion coefficient is then determined from the selected table with the produced power word (LS) and the first component (R), and the predistortion coefficient is used for predistortion.

Abstract: In a transmitting arrangement a power amplifier is coupled to a radio-frequency antenna arrangement via a controllable matching apparatus. This allows direct impedance transformation of the output of the power amplifier to the input of the radio-frequency antenna arrangement. There is no need for transformation to the 50 ohm standard. The power amplifier, matching apparatus and a control circuit for controlling the impedance of the matching apparatus form a functional unit, which is advantageously in the form of a monolithically integrated structure in a semiconductor body. A receiving arrangement is produced in the same way, comprising an antenna, a filter device and a matching apparatus connected between them.

Abstract: The invention provides a transmission device having adaptive digital predistortion, which has a transmission path and a feedback path. The transmission path contains a predistortion unit which takes a derived control signal (LS) and baseband signals applied to the input side as a basis for calculating the address of a predistortion coefficient (KOEFF1) stored in a memory and logically combines this predistortion coefficient with the applied baseband signals in a complex multiplication unit. The use of complex coefficients and of the complex multipliers allows compensation both for AM/AM distortion and for AM/PM distortion in an amplifier device connected downstream of the predistortion unit. Usefully, the feedback path of the transmission device with digital adaptive predistortion can also be implemented using the reception device in a transceiver.

Abstract: A modulator arrangement includes a power amplifier which receives a carrier signal and has a current control input and a voltage supply input. The modulator arrangement further includes a supply voltage modulator having an output coupled to the voltage supply input and an input coupled to the data input and a bias current modulator with an output coupled to the current control input and an input coupled to the data input. A control unit is provided which has a power control output coupled to the supply voltage modulator and to the bias current modulator to control the supply voltage modulator and the bias current modulator depending on a power control signal.

Abstract: A voltage supply arrangement is proposed, which provides a voltage from a first power range in a first operating mode and from a second power range in a second operating mode, to a first electrical load. The voltage supply arrangement includes a voltage converter which is coupled on the input side to a voltage input of the voltage supply arrangement and on the output side to a first connection of a first switch, which is connected at a second connection to a voltage output of the voltage supply arrangement for connection of a first electrical load. The voltage supply arrangement further includes a second switch, which is coupled at a first connection to the voltage input and at a second connection to the voltage output, and a drive circuit, which is configured to set the first and the second switch to the first or the second operating mode in response to a control signal.

Abstract: A transmitting device with digital predistortion is disclosed. The device produces a power word derived from an amplitude component of a digital modulation signal and a desired output power. The power word is compared with a limit value, and depending on the result, one pair of predistortion coefficients is selected and distortion of a first and second component of the digital modulation signal is thus carried out. The phase and the amplitude of a carrier signal are then modulated with the distorted components. Selective distortion of the modulation signal is carried out by comparison of the power word with a limit value, when the signal quality or the linearity of the modulated carrier signal falls below a predetermined limit value. Otherwise, the predistortion unit can be switched off, and the power consumption can thus be reduced.

Abstract: A method is proposed for signal processing with predistortion. An amplifier circuit is provided for this purpose, whose operating states are characterized by at least one characteristic variable. A digital modulation signal having two components (R, ?), as well as a power word (LS), derived from the first component (R), are produced, and an operating state of the at least one amplifier circuit is then determined by recording of the characteristic variable. The power word (LS) is compared with the reference value and used to decide whether to predistort the first and/or the second component. A table with various predistortion coefficients is selected from at least two tables, depending on the operating state of the amplifier circuit. One predistortion coefficient is then determined from the selected table with the produced power word (LS) and the first component (R), and the predistortion coefficient is used for predistortion.

Abstract: In a transmitting arrangement a power amplifier is coupled to a radio-frequency antenna arrangement via a controllable matching apparatus. This allows direct impedance transformation of the output of the power amplifier to the input of the radio-frequency antenna arrangement. There is no need for transformation to the 50 ohm standard. The power amplifier, matching apparatus and a control circuit for controlling the impedance of the matching apparatus form a functional unit, which is advantageously in the form of a monolithically integrated structure in a semiconductor body. A receiving arrangement is produced in the same way, comprising an antenna, a filter device and a matching apparatus connected between them.

Abstract: A device for processing data which is to be transmitted by radio, with the data to be transmitted being in the form of a digital baseband signal (DAT1), has a filter unit (301) for pulse shaping and oversampling of the digital baseband signal (DAT1), a predistortion unit (302, 303) for predistortion of the filtered and oversampled digital baseband signal (DAT2), and a control unit (304, 313) for controlling the predistortion unit (302, 303) as a function of the digital baseband signal (DAT1).

Abstract: A transmission arrangement includes a transmitter circuit for subjecting signals for transmission to signal conditioning, the signal output of said transmission arrangement being connected to a power amplifier. The power amplifier is produced in a semiconductor body and has at least one mode of operation that is characterized by at least one adjustable setting parameter. Outside of the semiconductor body, there is a programmable control circuit which is designed to send setting signals to the power amplifier in order to set the at least one adjustable setting parameter. The control circuit and the power amplifier are thus of separate design and can each be produced independently using the best technology.

Abstract: One or more aspects of the present invention relate to a transmission device having a digital predistortion unit which has a control input to which a control signal (CONT1) is applied. The control signal is output by a power control unit which evaluates a power control signal (LS). The predistortion unit distorts a baseband signal which is to be transmitted whenever the linearity of a power amplifier can no longer be observed at the currently required power without predistortion. To this end, the baseband signal is multiplied in complex fashion by a predistortion coefficient which is dependent on the level of the baseband signal.

Abstract: The invention provides a transmission device having adaptive digital predistortion, which has a transmission path and a feedback path. The transmission path contains a predistortion unit which takes a derived control signal (LS) and baseband signals applied to the input side as a basis for calculating the address of a predistortion coefficient (KOEFF1) stored in a memory and logically combines this predistortion coefficient with the applied baseband signals in a complex multiplication unit. The use of complex coefficients and of the complex multipliers allows compensation both for AM/AM distortion and for AM/PM distortion in an amplifier device connected downstream of the predistortion unit. Usefully, the feedback path of the transmission device with digital adaptive predistortion can also be implemented using the reception device in a transceiver.

Abstract: A monolithically integrated vertical DMOS transistor device comprises a semiconductor substrate (11), a gate including a gate semiconductor layer region (27) on top of a gate insulation layer region (25), a source (31), a drain including a buried drain region (13) and a drain contact (21), and a channel region (29) arranged beneath the gate region. The drain comprises a lightly doped, preferably retrograde doped, drain region (23) arranged between the gate and the buried drain region, and the source (31), the channel region (29) and the lightly doped drain region (23) are arranged in a doped well region (17), wherein the lightly doped drain region has a higher doping level than the well region to thereby enhance the high frequency properties of the vertical DMOS transistor device.

Abstract: A power transistor cell includes an air bridge and a plurality of individual transistors. Each of the plurality of individual transistors has at least one separate connection contact. Each of the at least one separate connection contact of the plurality of individual transistors is thermally conductively connected to one another through the air bridge forming air bridge connections, which define a contact plane. A surface of the contact plane that contains each connection path between two of the air bridge connections defines a convex region. The air bridge is formed to have, in the contact plane, dimensions that exceed a smallest convex region containing all of the air bridge connections in all directions of the air bridge. Each of the plurality of power transistor cells can be respectively thermally conductively connected to one another through the air bridge to form a block of power transistor cells.