Abstract: An electronic circuit with an improved current stabilization operating in an RF transceiver or receiver, e.g. in a wireless local area network system, and a corresponding method is provided for generating a supply current and supplying the generated supply current to at least two subunits of the electronic circuit. The at least two subunits are connected in parallel to each other. Each of the subunits receives an input voltage at an input transistor in the first one of at least two parallel current paths of the subunit. Each subunit stabilizes the current through the input transistor by means of a control circuit a second current path of the subunit and a common voltage output terminal is connected to each subunit for outputting a voltage. The provided technique may allow for detecting maximum values or generating absolute values.

Abstract: The invention provides a mixer comprising a multiplier circuit having a first and a second mixer, a generator for generating two first and two second control signals for controlling the first and second mixers, wherein the first and second control signals are in each case balanced signals and the first control signals have a frequency f1 and the second control signals have a different frequency f2.

Abstract: A mixer circuit is provided for receiving first and second input signals to be mixed and for producing a mixed output signal. The mixer circuit comprises a pair of switching transistors each of which having first, second and third terminals. The mixer circuit further comprises a single ended input connected to the first terminals of the pair of switching transistors, a local oscillator input connected to the second terminals of the pair of switching transistors for controlling the switching of the transistors, a serial capacitor connected in serial connection between the single ended input and the first terminals of the pair of switching transistors, a pair of output capacitors each of which being connected to a third terminal of the pair of switching transistors. Said third terminals of said pair of switching transistors forming an output port. The mixer circuit provides a mixer schematic with improved noise performance.

Abstract: In one embodiment, an apparatus comprises a first integrated circuit and a second integrated circuit configured to be coupled to the first integrated circuit. The first integrated circuit comprises transceiver hardware configured to transmit and receive analog signals, one or more analog to digital converters coupled to the transceiver hardware, and one or more digital to analog converters coupled to the transceiver hardware. The analog to digital converters are configured to convert one or more received analog signals from the transceiver hardware to one or more received digital signals. The digital to analog converters are coupled to receive one or more transmitted digital signals, and are configured to convert the transmitted digital signals to transmitted analog signals for transmission by the transceiver hardware. The second integrated circuit comprises a baseband processor configured to process the received digital signals and to generate the transmitted digital signals.

Abstract: An electronic circuit with an improved current stabilization operating in an RF transceiver or receiver, e.g. in a wireless local area network system, and a corresponding method is provided for generating a supply current and supplying the generated supply current to at least two subunits of the electronic circuit. The at least two subunits are connected in parallel to each other. Each of the subunits receives an input voltage at an input transistor in the first one of at least two parallel current paths of the subunit. Each subunit stabilizes the current through the input transistor by means of a control circuit a second current path of the subunit and a common voltage output terminal is connected to each subunit for outputting a voltage. The provided technique may allow for detecting maximum values or generating absolute values.

Abstract: A mixer circuit is provided for receiving first and second input signals to be mixed and for producing a mixed output signal. The mixer circuit comprises a pair of switching transistors each of which having first, second and third terminals. The mixer circuit further comprises a single ended input connected to the first terminals of the pair of switching transistors, a local oscillator input connected to the second terminals of the pair of switching transistors for controlling the switching of the transistors, a serial capacitor connected in serial connection between the single ended input and the first terminals of the pair of switching transistors, a pair of output capacitors each of which being connected to a third terminal of the pair of switching transistors. Said third terminals of said pair of switching transistors forming an output port. The mixer circuit provides a mixer schematic with improved noise performance.

Abstract: An automatic gain controller for transceiver elements uses a digital topology to achieve an efficient and rapid gain settling so that an output signal of the variable gain section is within a predefined range. In one embodiment, an input signal is periodically sampled and latched so as represent the gain excess of a variable gain section. An accumulator, including an adder having saturation characteristics and a latch as a feedback element, creates a number for a new gain setting so that the variable gain section may adapt to the new gain setting within one clock period. In one example, a gain range of 84 dB is controllable and settling is achieved within 3 clock periods at most.

Abstract: An inductor and transformer comprise a plurality of interleaved conductive layers and insulation layers fabricated on a monolithic semiconductor integrated circuit die. The conductive layers are shaped into coil turns of the inductor and the transformer, and are stacked vertically (perpendicular to the horizontal plane of the coil layers) and proximate to one another so as to achieve close magnetic coupling therebetween, thereby achieving a larger inductance value for a given sized coil structure. The conductive layer coil turns are connected together with conductive vias through the interposing insulation layers.