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US 11,444,592 B2Granted
Filter circuit
AssigneePpc Broadband, Inc.
InventorsErdogan Alkan, Raymond W. Palinkas
Life of this patent
Estimating the term…
Abstract
A filter circuit includes a pass band filter portion configured to pass signals in a first frequency spectrum and attenuate or block signals in a second frequency spectrum. The first frequency spectrum and the second frequency spectrum do not overlap. The pass band filter portion is configured to cause a return loss of more than 10 decibels (dB) in the first frequency spectrum.
Claims56
A filter circuit, comprising:
- an input;
- an output;
- a pass band filter portion between the input and the output, wherein the pass band filter portion is configured to pass signals between the input and the output in a first frequency spectrum and attenuate or block signals between the input and the output in a second frequency spectrum;
- an interference mitigation portion configured to be connected to the pass band filter portion, wherein the interference mitigation portion comprises an attenuator circuit that is configured to increase a return loss at the output in the second frequency spectrum;
- and
- wherein the second frequency spectrum is higher than the first frequency spectrum.
3 more elements
A filter circuit comprising:
- an input;
- an output;
- a pass band filter portion between the input and the output, wherein the pass band filter portion is configured to pass signals between the input and the output in a first frequency spectrum and attenuate or block signals between the input and the output in a second frequency spectrum;
- and
- an interference mitigation portion configured to be connected to the pass band filter portion, wherein the interference mitigation portion comprises an attenuator circuit that is configured to increase a return loss at the output in the second frequency spectrum without substantially affecting a frequency response of a remainder of the filter circuit;
- and
- wherein the second frequency spectrum is distinct from, and higher than, the first frequency spectrum.
4 more elements
A filter circuit, comprising:
- means for passing signals between an input and an output in a first frequency spectrum and attenuating or blocking signals between the input and the output in a second frequency spectrum, wherein the second frequency spectrum is distinct from, and higher than the first frequency spectrum;
- and
- means for increasing a return loss at the output in the second frequency spectrum without substantially affecting a frequency response of a remainder of the filter circuit.
A filter circuit, comprising:
- a pass band filter portion configured to pass signals in a first frequency spectrum and attenuate or block signals in a second frequency spectrum, wherein the second frequency spectrum is higher than the first frequency spectrum, and wherein the pass band filter portion is configured to cause a return loss of more than 10 decibels (dB) in the first frequency spectrum.
A filter circuit comprising:
- a pass band filter portion configured to pass a first frequency spectrum signal between an input and an output and attenuate or block a second frequency spectrum signal between the input and the output;
- an interference attenuator portion configured to selectively increase a return loss at the output in a second frequency spectrum corresponding to the second frequency spectrum signal;
- wherein the first frequency spectrum signal is at a first frequency range;
- and
- wherein the second frequency spectrum signal is at a second frequency range that is higher than the first frequency range of the first frequency spectrum signal.
2 more elements
A filter circuit comprising:
- means for passing a first frequency spectrum signal between an input and an output;
- means for attenuating or blocking a second frequency spectrum signal between the input and the output;
- means for selectively increasing a return loss at the output in a second frequency spectrum corresponding to the second frequency spectrum signal;
- wherein the first frequency spectrum signal is at a first frequency range;
- and
- wherein the second frequency spectrum signal is at a second frequency range that is higher than the first frequency range of the first frequency spectrum signal.
3 more elements
A filter circuit comprising:
- a pass band filter portion configured to pass a first frequency spectrum signal between an input and an output and attenuate or block a second frequency spectrum signal between the input and the output;
- wherein the pass band filter portion is configured to selectively cause a return loss of more than 10 decibels (dB) in the first frequency spectrum;
- wherein the first frequency spectrum signal is at a first frequency range;
- and
- wherein the second frequency spectrum signal is at a second frequency range that is higher than the first frequency range of the first frequency spectrum signal.
2 more elements
A filter circuit comprising:
- means for passing a first frequency spectrum signal between an input and an output;
- means for attenuating or blocking a second frequency spectrum signal between the input and the output;
- means for selectively causing a return loss of more than 10 decibels (dB) in the first frequency spectrum;
- wherein the first frequency spectrum signal is at a first frequency range;
- and
- wherein the second frequency spectrum signal is at a second frequency range that is higher than the first frequency range of the first frequency spectrum signal.
3 more elements
Dependencies are inferred from the claim text.