Abstract: A transmitter comprises a baseband signal path, which is designed to provide a first baseband signal having an in-phase component and a quadrature component in a first mode of the transmitter and to provide a second baseband signal having an amplitude component and a phase component in a second mode of the transmitter; an oscillator circuit, which is designed to provide an oscillator signal, wherein the oscillator circuit is furthermore designed to provide the oscillator signal as an unmodulated signal in the first mode and to provide the oscillator signal as a modulated signal in the second mode, wherein a modulation of the oscillator signal in the second mode is based on the phase component of the second baseband signal; and a radio-frequency digital-to-analogue converter (RF-DAC), which is designed to receive the oscillator signal, the first baseband signal and the amplitude component of the second baseband signal, wherein the RF-DAC is furthermore designed to provide the vector-modulated RF output signal

Abstract: Implementations related to circuits including an oscillator and a switch-mode DC/DC converter are presented herein.

Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.

Abstract: A transceiver arrangement includes a first receive path including a first connection and a first receive amplifier, and a second receive path including a second connection, a second receive amplifier, and a frequency conversion device. The transceiver also includes a controllable coupling device configured to couple an output of the first receive amplifier to an input of the frequency conversion device on the second signal path, and a control circuit configured to provide a control signal to the coupling device for selectively combining signals delivered by the first and second receive amplifiers in the correct phase based on a parameter which is derived from a signal present at the first connection or second connection, or both. The parameter derived from the received signal represents whether a signal strength of the received signal or a signal quality of the received signal exceeds a first predetermined threshold.

Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.

Abstract: A transceiver arrangement includes a first receive path with a first connection and a first receive amplifier, and a second receive path with a second connection, a second receive amplifier, and a frequency conversion device. A controllable coupling device is configured to couple an output of the first receive amplifier to an input of the frequency conversion device on the second signal path. Furthermore, the transceiver arrangement includes a control circuit configured to deliver a control signal to the coupling device for combining signals delivered by the first and second receive amplifier in the correct phase based on a signal supplied by the receive paths. This achieves receive diversity wherein, on the one hand, additional external components are no longer necessary and, on the other hand, adequate signal quality is ensured even with a simultaneous transmit process of the transceiver arrangement.

Abstract: A device includes a digital-to-time converter and an interpolator having a data input and a data output coupled to the digital-to-time converter. The interpolator may be configured to receive a converter control signal at the data input and to provide an interpolated converter control signal at the data output. An interpolation rate of the interpolator may depend on the converter control signal.

Abstract: This disclosure is directed to techniques for increasing the power efficiency of a modulator.

Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.

Abstract: A circuit arrangement includes a component having a closed signal path, that closed signal path connected to a first port, a second port and at least a third port. The component has a directed signal flow of a signal applied to one of that ports. Such a coupling device can be connected to a transmitter and to a receiver path, respectively.

Abstract: Implementations related to circuits including an oscillator and a switch-mode DC/DC converter are presented herein.

Abstract: Implementations related to circuits including an oscillator and a switch-mode DC/DC converter are presented herein.

Abstract: A receiver, in particular for mobile radio, includes a receiver branch with a mixer, downstream of an analog/digital converter. A reference generator generates a reference clock, which is fed to the converters or PLL synthesizers of the mixer by integral multiplication or division. As a result, a particularly energy-saving and space-saving circuit configuration is realized, which has a low level of mutual interference between the signals and is suitable (in particular for Universal Mobile Telecommunication System, UMTS). In a preferred embodiment, the receiver is developed into a transceiver by providing a transmission path.

Abstract: This disclosure relates to linearization in polar modulators of wireless communication devices, to attain linear amplification and high power efficiency during transmission.

Abstract: A transmitter includes an output. A coupler receives at least a derivative of the output and provides a feedback signal. A demodulator receives the feedback signal and performs an additive mixing to demodulate the feedback signal.

Abstract: The present application relates to embodiments of methods and a device for digital modulation. In a first embodiment of the method, the following steps are executed: determining a polarity of the signal, providing an inverted carrier signal, providing an inverted signal by an inversion of the polarity of at least one portion of the signal, mixing the signal with the carrier signal when the signal has the first polarity, and mixing the inverted signal with the inverted carrier signal when the signal has the second polarity.

Abstract: This disclosure is directed to techniques for increasing the power efficiency of a modulator.

Abstract: A transceiver circuit includes a transmission path and also at least two reception paths, which in each case contain a frequency conversion device with a local oscillator input. A first, a second and a third oscillator circuit, and also a programmable frequency divider circuit are furthermore provided. The outputs of the oscillator circuits are connected to a respective input of the programmable frequency divider circuit. The frequency divider circuit contains three outputs connected in each case to a local oscillator input of the transmission path and the two transmission paths. According to one example of the invention, the frequency divider circuit is designed for frequency division of a signal present at an input and for outputting the frequency-divided signal to one of the three outputs.

Abstract: A receiver, in particular for mobile radio, includes a receiver branch with a mixer, downstream of an analog/digital converter. A reference generator generates a reference clock, which is fed to the converters or PLL synthesizers of the mixer by integral multiplication or division. As a result, a particularly energy-saving and space-saving circuit configuration is realized, which has a low level of mutual interference between the signals and is suitable (in particular for Universal Mobile Telecommunication System, UMTS). In a preferred embodiment, the receiver is developed into a transceiver by providing a transmission path.

Abstract: A receiver, in particular for mobile radio, includes a receiver branch with a mixer, downstream of an analog/digital converter. A reference generator generates a reference clock, which is fed to the converters or PLL synthesizers of the mixer by integral multiplication or division. As a result, a particularly energy-saving and space-saving circuit configuration is realized, which has a low level of mutual interference between the signals and is suitable (in particular for Universal Mobile Telecommunication System, UMTS). In a preferred embodiment, the receiver is developed into a transceiver by providing a transmission path.