Abstract: A dual-mode analog beam forming (ABF) circuit (104) for a communication unit (100) that includes a plurality of individual antenna elements (102), wherein the dual-mode ABF circuit (104) comprises at least one of: a RF splitter (212, 512) for splitting an input modulated RF signal into a plurality of modulated RF signals that are applied to respective antenna elements of the plurality of individual antenna elements and/or a RF combiner (232) for combining a plurality of input modulated RF signals into a modulated RF signal. A plurality of phase adjustment elements is respectively coupled to a beam-index LUT (117) and a phase of each phase adjustment element is individually controlled by the beam-index LUT. The beam-index LUT is configured to support antenna beam forming of two modes of operation, comprising an analog beam forming communication mode of operation; and a ST-CDMA-MIMO radar mode of operation.

Abstract: There is disclosed an AC/DC converter circuit. The circuit comprises: an input terminal for receiving an AC supply voltage; a driver circuit adapted to supply a DC drive current or voltage to an output of the circuit based on a signal provided to a control terminal of the driver circuit; and an AC coupling network connected between the input terminal and the control terminal of the driver circuit. The AC coupling network is adapted to derive a signal from an AC supply voltage received by the input terminal and to supply the derived signal to the control terminal of the driver circuit.

Abstract: A multiple output switching circuit (300) comprising an input (302) configured to receive power from a power source; a first output (304) configured to provide a first output voltage; and an inductor (308) and a power switch (306) connected between the input (302) and first output (304). The power switch (306) is operable to transfer power from the input (302) to the first output (304). The switching circuit further comprising a second output (312) configured to provide a second output voltage; a second switch (310) coupled between the first output (302) and the second output (312); and a second switch controller (314) configured to provide the second switch (310) with a second switch control signal (318) such that power is transferred from the input (302) to the second output (312) when the first output voltage level reaches a first output threshold level.

Abstract: There is disclosed an AC/DC converter circuit. The circuit comprises: an input terminal for receiving an AC supply voltage; a driver circuit adapted to supply a DC drive current or voltage to an output of the circuit based on a signal provided to a control terminal of the driver circuit; and an AC coupling network connected between the input terminal and the control terminal of the driver circuit. The AC coupling network is adapted to derive a signal from an AC supply voltage received by the input terminal and to supply the derived signal to the control terminal of the driver circuit.

Abstract: A multiple output switching circuit (300) comprising an input (302) configured to receive power from a power source; a first output (304) configured to provide a first output voltage; and an inductor (308) and a power switch (306) connected between the input (302) and first output (304). The power switch (306) is operable to transfer power from the input (302) to the first output (304). The switching circuit further comprising a second output (312) configured to provide a second output voltage; a second switch (310) coupled between the first output (302) and the second output (312); and a second switch controller (314) configured to provide the second switch (310) with a second switch control signal (318) such that power is transferred from the input (302) to the second output (312) when the first output voltage level reaches a first output threshold level.

Abstract: In order to further develop a circuit arrangement (100), in particular to a phase-locked loop for sub-clock or sub-pixel accurate phase-measurement and phase-generation, as well as a corresponding method in such way that no clock multiplier phase-locked loop is to be provided behind the time-to-digital converter and that neither an analog delay line nor a signal divider unit is to be provided between the digital ramp oscillator or discrete time oscillator and the digital-to-time converter, wherein less analog circuitry is susceptible for noise and for ground bounce in the digital environment, it is proposed to provide at least one phase measurement unit (10);—at least one loop filter unit (40; 40?) being provided with at least one output signal (delta-phi) of at least one phase detector unit (30); at least one digital ramp oscillator unit or discrete time oscillator unit (50; 50?) being provided with at least one output signal, in particular with at least one increment (inc), of the loop filter unit (40; 40?)