| Patent application number | Description | Published |
|---|
| 20090102559 | MONOTONIC VARIABLE GAIN AMPLIFIER AND AN AUTOMATIC GAIN CONTROL CIRCUIT - A monotonic variable gain amplifier which can be controlled to achieve a desired gain. The amplifier has: —at least two amplifier stages ( | 04-23-2009 |
| 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 |
| 20090219449 | MULTI-TUNER APPARATUS FOR RECEIVING RF SIGNALS - A multi-tuner apparatus comprises a splitter (S) for received RF signals. The splitter has a splitter output (U) for connection to a plurality of tuners. To reduce signal degradation and dissipation the output impedance of the splitter output is substantially lower than the input impedance of each of the tuners. | 09-03-2009 |
| 20100207678 | MIXER ARCHITECTURE - This invention relates to a device, a method, a system, wherein at least two mixer units are associated with at least two different mixer frequencies, and wherein each of said mixer units comprises a first input configured to receive at least one input signal to be mixed, and wherein at least one amplifier is coupled to said at least two mixer units, wherein each of said at least one amplifier is coupled to at least two outputs of at least two different mixer units of said at least two mixer units. | 08-19-2010 |
| 20100231801 | AUTOMATIC GAIN CONTROL CIRCUIT - An automatic gain control (AGC) circuit based on a cascade of a step automatic gain control unit and a second automatic gain control unit connected to adjust their gain in a synchronized manner to result in a combined impulsive gain variation. Hereby it is possible, e.g. to use a step automatic gain control unit instead of a continuous automatic gain control unit in an RF part of a TV tuner without resulting in visual artifacts—this applies both for digital and analog TV tuners. According to a preferred embodiment, the synchronization between the two automatic gain control units may be achieved by the first automatic gain control unit generating a control signal upon gain adjustment, this control signal serving to speed up a loop bandwidth controlling gain change of the second automatic gain control unit. In another embodiment, the control signal generated by the first automatic gain control unit is used to control a gain step of the second automatic gain control unit. In addition, the invention provides a tuner with an automatic gain control unit as mentioned, and a device, e.g. a TV or a hard disc recorder with such tuner. | 09-16-2010 |
| 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 |
| 20100283526 | HARMONIC REJECTION MIXER UNIT AND METHOD FOR PERFORMING A HARMONIC REJECTION MIXING - A harmonic rejection mixer unit is provided which comprises an input (RF), at least one harmonic rejection unit (HRU) with at least two transistor units (T | 11-11-2010 |
| 20110043267 | CALIBRATION OF LINEAR TIME-INVARIANT SYSTEM'S STEP RESPONSE - The invention concerns in general measurement of the transfer function of linear time invariant systems, more particular the calibration of such systems based on a measured transfer function. According to a first aspect the present invention an arrangement for measuring the transfer function of a linear time-invariant system is disclosed. According to a second aspect of the present invention the arrangement is implemented into a linear time-invariant circuitry having a transfer function representing the amplitude and phase characteristic of the circuitry, where by means of the arrangement for measuring the transfer function the transfer function can be optimized in accordance with certain criteria on-the-fly, i.e. in or before operation of the circuit. Finally, an effective and simple method for measuring of the transfer function of a linear time-invariant system together with the use or application of the method is shown. | 02-24-2011 |
| 20110050344 | OUTPUT STAGE FOR A DIGITAL RF TRANSMITTER, METHOD FOR PROVIDING AN RF OUTPUT SIGNAL IN A DIGITAL RF TRANSMITTER, AND DIGITAL RF TRANSMITTER - An output stage ( | 03-03-2011 |
| 20110164702 | POLAR TRANSMITTER - The present application relates to at least one digitally controlled oscillator and a data modulation device. More particularly, the digital polar transmitter comprises at least one digitally controlled oscillator configured to generate at least one frequency. The digital polar transmitter comprises a data modulation device, wherein the data modulation device comprises at least one data input terminal, at least one output terminal, and at least one frequency input terminal, wherein the output terminal is connected to the digitally controlled oscillator. The digital polar transmitter comprises a phase measuring device configured to measure phase information from the output signal of the data modulation device for every frequency sample. The digital polar transmitter comprises a phase error detecting device configured to detect a phase error at least depending on the measured phase information, wherein the phase error detecting device is configured to apply the detected phase error to the output signal of the data modulation device. | 07-07-2011 |
