Filtering interference detected at wireless receiver

摘要

A wireless receiver for UWB or other format receives a useful signal in a particular band of frequencies in spite of interference components. The wireless receiver has two or more different types of tunable band reject filter, involves detecting interference in the received signal, and selecting which of the different types of filter to use according to thresholds of parameters of the detected interference. The filter is then tuned according to the detected interference and the useful signal is then received with the interference suppressed using the selected BRF. As the different types of filters have different drawbacks and benefits, by having multiple types, and selecting which to use according to the detected interference, the filtering can be better matched to the detected interference, or the drawbacks can be reduced for example.

主权项

1. A method of operating a wireless receiver to receive a signal, the wireless receiver having at least a digital type tunable band reject filter and an analog type tunable band reject filter, the method having the steps of:
detecting interference in the received signal, selecting which of the different types of filter to use according to different thresholds of one or more parameters of the detected interference wherein the digital type of band reject filter is selected without the analog type of band reject filter for interference having a first threshold value for a first of the parameters, tuning the selected filter or filters according to the detected interference, and filtering the interference using the selected filter or filters.