| Patent application number | Description | Published |
|---|
| 20100219883 | Active Filter Calibration Method and Apparatus - An example bandpass filter calibration system includes a MUX, first and second signal sources coupled to inputs of the MUX, a bandpass filter coupled to an output of the MUX, a rectification circuit including a plurality of rectifiers having a corresponding plurality of rectifier outputs coupled to an output of the bandpass filter, a summer having a plurality of inputs coupled to the plurality of rectifier outputs, a low pass filter coupled to an output of the summer, an ADC coupled to an output of the low pass filter, and a calibration processor unit coupled to an output of the ADC. The calibration processor unit controls the MUX to selectively apply the first signal source and the second signal source to the bandpass filter and calibrates the bandpass filter by a least one of increasing filter center frequency and decreasing filter center frequency of the bandpass filter. | 09-02-2010 |
| 20100220817 | Data Slicer with Multi-Mode Threshold Generator - In an embodiment, set forth by way of example and not limitation, a data slicer includes a signal input node, a comparator having a first input of a first polarity, a second input of a second polarity which is the opposite of the first polarity, and an output coupled to a data out node, the first input of the comparator being coupled to the signal input node, and a multi-mode threshold generator including a first threshold generator and second threshold generator, whereby the first threshold generator is selected firstly and the second threshold generator is selected secondly. | 09-02-2010 |
| 20100220820 | Receiver with Mixed-Mode Automatic Gain Control - In an embodiment, set forth by way of example and not limitation, a receiver with automatic gain includes a receiver stage, an AGC stage, and a digital processor which collectively define an AGC loop. Preferably, the AGC stage has a control circuit and a feedback circuit with matched transfer characteristics. A digital processor is operative to develop a gain control signal to set a desired gain level of the receiver stage to an optimal level based upon a waveform analysis derived from the gain feedback signal. | 09-02-2010 |
