Analog signal separator for UWB versus narrowband signals
First Claim
1. An ultrawide bandwidth receiver, comprising:
- an input terminal configured to receive an incoming signal including an ultrawide bandwidth signal and a narrowband signal that overlap in frequency;
an interference extraction circuit for receiving the incoming signal from the input terminal and providing an output signal to an extraction circuit output terminal, the interference extraction circuit being configured to have an impulse response including;
a first component that has a first impulsive shape, and at least one other component delayed in time from the first component, and having a second impulsive shape;
an ultrawide bandwidth signal detector connected to the extraction circuit output terminal, and configured to detect the ultrawide bandwidth signal;
a splitter connected to the input terminal, and operating to split the incoming signal into at least a first split signal and a second split signal, the first split signal being provided to a first splitter output terminal, the second split signal being provided to a second splitter output terminal;
a delay element connected to the first splitter output terminal for delaying the first split signal by a delay time to provide a delayed signal at a delay output terminal; and
a combiner for combining the delayed signal and the second split signal to form the output signal,wherein the interference extraction circuit allows energy from the ultrawide bandwidth signal to be conveyed to the extraction circuit output terminal and substantially blocks energy from the narrowband interference signal from being output to the extraction circuit output terminal.
19 Assignments
0 Petitions
Accused Products
Abstract
A system, method, and computer program product for removing “narrowband” interference from a broader spectrum containing a UWB signal, in a receiver of the UWB signal. The RFI is extracted from a broader spectrum to remove interference from the UWB signal, by employing an impulse response in a radio front-end of the UWB receiver that is matched with an incoming wavelet employed as part of a UWB signal to be received, matching the impulse response to the wavelet and its time-shifted and inverted versions, passing the wavelet unscathed through the receiver, and excising narrowband signals (continuous tones). Exemplary embodiments for the RFI extraction mechanism include a transmission line circuit, an active transmission line circuit, and an adaptable, controllable phase delay circuit.
-
Citations
20 Claims
-
1. An ultrawide bandwidth receiver, comprising:
-
an input terminal configured to receive an incoming signal including an ultrawide bandwidth signal and a narrowband signal that overlap in frequency; an interference extraction circuit for receiving the incoming signal from the input terminal and providing an output signal to an extraction circuit output terminal, the interference extraction circuit being configured to have an impulse response including;
a first component that has a first impulsive shape, and at least one other component delayed in time from the first component, and having a second impulsive shape;an ultrawide bandwidth signal detector connected to the extraction circuit output terminal, and configured to detect the ultrawide bandwidth signal; a splitter connected to the input terminal, and operating to split the incoming signal into at least a first split signal and a second split signal, the first split signal being provided to a first splitter output terminal, the second split signal being provided to a second splitter output terminal; a delay element connected to the first splitter output terminal for delaying the first split signal by a delay time to provide a delayed signal at a delay output terminal; and a combiner for combining the delayed signal and the second split signal to form the output signal, wherein the interference extraction circuit allows energy from the ultrawide bandwidth signal to be conveyed to the extraction circuit output terminal and substantially blocks energy from the narrowband interference signal from being output to the extraction circuit output terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
16. A radio frequency interference extraction mechanism for receiving an incoming ultrawide bandwidth signal and providing an adjusted ultrawide bandwidth signal that has any narrowband interference signal that coincides with the ultrawide bandwidth signal in frequency suppressed, comprising:
-
a radio front end, having an impulse response including a first impulse response component and a second impulse response component, for receiving the incoming ultrawide bandwidth signal and generating the adjusted ultrawide bandwidth signal; a controller configured to control the radio front end to adjust a relative position of the first impulse response component and the second impulse response component; and a control receiver configured to detect at least one of a signal energy level and a signal to noise ratio of the narrowband interference signal and to provide an indication to the controller regarding a characteristic feature of the narrowband interference signal, wherein the radio front end comprises a plurality of adjustable-bias amplifiers connected in series for receiving the first impulse response component and generating the second impulse response component, and wherein the controller is configured to set bias values in the adjustable-bias amplifiers. - View Dependent Claims (17, 18, 19, 20)
-
Specification