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Brekelmans, NL
Johannes Brekelmans, Limburg NL
| Patent application number | Description | Published |
|---|---|---|
| 20080248757 | Receiver Having a Gain-Controllable Stage - A gain-controllable stage (CLN, A1, A2 . . . , A7, ACC) comprises a reactive signal divider (CLN) followed by an amplifier arrangement (A1, A2 . . . , A7, ACC). The reactive signal divider (CLN) may be in the form of, for example, a capacitive ladder network. The gain-controllable stage (CLN, A1, A2 ..., A7, ACC) has a gain factor that depends on a signal division factor that the reactive signal divider (CLN) provides. The reactive signal divider (CLN) forms part of a filter (LC). The signal division factor is adjusted on the basis of a frequency (F) to which the receiver is tuned and a signal-strength indication (RS). | 10-09-2008 |
Johannes H.a. Brekelmans, Nederweert NL
| Patent application number | Description | Published |
|---|---|---|
| 20100119022 | CALIBRATION-FREE LOCAL OSCILLATOR SIGNAL GENERATION FOR A HARMONIC-REJECTION MIXER - A circuit for producing multiple switching control signals for a harmonic rejection mixer from multiple phases of a digital local oscillator signal is presented, wherein a first waveform combiner circuit is arranged to generate from the multiple phases of the digital local oscillator signal at least one switching control signal by logical combining two from the multiple phases of a digital local oscillator signal, and a second waveform combiner circuit is arranged to generate from the multiple phases of the digital local oscillator signal at least one first switching control signal by logical combining one from the multiple phases of a digital local oscillator signal with a predetermined signal having a static logical value. To compensate for phase errors the schematic topology of the first and the second waveform combiner circuit are arranged to be fully symmetrical to each other in that in the first waveform combiner, the circuit part for providing the function of the second waveform combiner is used as a dummy circuit, and in the second waveform combiner, a circuit part for providing the function of the first waveform combiner is used as a dummy circuit. Accordingly, the sources for providing the multiple phases of the digital local oscillator signal see the same load, and hence required phase shift is guaranteed. | 05-13-2010 |
| 20100253412 | PASSIVE HARMONIC-REJECTION MIXER - An electronic device comprising a passive harmonic-rejection mixer. The passive harmonic rejection mixer has an input connected to several sub-mixer stages, and the sub-mixer stages are connected to a summing module for generating the output. Each sub-mixing stage comprises a gating module and a respective amplifier, the gating module adapted to selectively pass the input signal or the input signal with inverted polarity under the control of control signals. | 10-07-2010 |
Johannes H. A. Brekelmans, Nederweert NL
| Patent application number | Description | Published |
|---|---|---|
| 20090195472 | DIVERSITY ANTENNA ASSEMBLY FOR WIRELESS COMMUNICATION EQUIPMENT - An antenna assembly (AA), for wireless communication equipment, comprises i) an antenna structure comprising at least a loop type antenna (LA) arranged to deliver a first current when it is used in a balanced mode and/or a second current when it is used in an unbalanced mode with respect to a ground plane (GP) from received radio signals, and E) current extraction means (A | 08-06-2009 |
| 20100026391 | AMPLIFIER - There is provided a method and apparatus for maintaining a bias current (I | 02-04-2010 |
| 20110298521 | POLYPHASE HARMONIC REJECTION MIXER - A polyphase harmonic rejection mixer, comprising a plurality of stages following each other; wherein a first stage is arranged to perform at least frequency conversion; and a second stage is arranged to perform at least selective weighting and combining; wherein at least two of the plurality of stages are arranged to perform at least combining. In an embodiment, the first stage ( | 12-08-2011 |
Johannes Hubertus Antonius Brekelmans, Nederweert NL
| Patent application number | Description | Published |
|---|---|---|
| 20090278603 | ALL N-TYPE TRANSISTOR HIGH-SIDE CURRENT MIRROR - The present invention relates to an all n-type transistor current mirror for mirroring an input current to an output current. The current mirror comprises an input n-type transistor (T | 11-12-2009 |
| 20100302082 | DEVICE FOR RECEIVING A RF SIGNAL WITH LOOP-THROUGH OUTPUT AND METHOD FOR LOOPING A RF INPUT SIGNAL THROUGH A DEVICE FOR RECEIVING RF SIGNALS - A device for receiving a RF signal ( | 12-02-2010 |
| 20110095807 | FREQUENCY CONVERSION - A frequency conversion circuit configured to mix a first input signal (RF+,RF−) at a first frequency with a second input signal (LO+,LO−) at a second frequency to provide an output intermediate frequency signal (IF | 04-28-2011 |
| 20110115539 | SIGNAL PROCESSING ARRANGEMENT - A signal processing arrangement comprises a series of latches (XDL, L | 05-19-2011 |
| 20110133839 | ARRANGEMENT FOR CALIBRATING THE QUIESCENT OPERATING POINT OF A PUSH-PULL AMPLIFIER - A signal processing arrangement comprises an amplifier (AMP V | 06-09-2011 |
| 20110195683 | TUNER APPARATUS WITH DIGITAL-TO-ANALOG-CONVERTER MIXER USING SINGLE LOCAL OSCILLATOR - A tuning method and tuner apparatus having a plurality of frequency conversion stages for concurrently receiving more than one channel. To avoid disturbance by oscillator pulling, a multi-phased local oscillator signal required by sub-mixers of a DAC mixer share the same timing reference. To minimize the complexity, die area and power dissipation of the local oscillation generation, a tuning offset is accepted from each of the down-conversion stages, and loss of receiver performance by the tuning offset is avoided by a control function for controlling the receiver circuit to process an increased dynamic range introduced by the tuning offset. | 08-11-2011 |
| 20110291732 | DIGITAL SIGNAL GENERATOR - The invention relates to a digital signal generator for providing one or more phases of a local oscillator signal for use in digital to analogue converters and harmonic rejection mixers. Embodiments disclosed include a local oscillator signal generator ( | 12-01-2011 |
Johannes Hubertus Antonius Brekelmans, Eindhoven NL
| Patent application number | Description | Published |
|---|---|---|
| 20090021332 | ARRAY OF CAPACITORS SWITCHED BY MOS TRANSISTORS - An integrated variable capacitance with low losses comprises an array ( | 01-22-2009 |
Johannes Hubertus Antonius Brekelmans, Niederweert NL
| Patent application number | Description | Published |
|---|---|---|
| 20120008717 | CONVERSION SYSTEM - The invention relates to frequency conversion systems, in particular for use as up-converters or down-converters in radiofrequency (RF) receivers or transmitters, exemplary embodiments including a radiofrequency receiver ( | 01-12-2012 |