Systems and methods for providing compensation of analog filter bandedge ripple using LPF
AssigneeMarvell International Ltd.
InventorVijay Ahirwar
Life of this patent
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Abstract
A method for compensating the bandedge ripple of an analog filter, using a circuit comprising a low pass filter is described. The method comprises receiving, at the analog filter, a plurality of tones of different frequencies from a tone generator, measuring, an amplitude of each tone in the plurality of tones after each tone is processed by the analog filter, storing the measured amplitudes and frequencies in a database, measuring a bandedge ripple by measuring a difference in amplitude between a first tone and a second tone from the plurality of tones, and selecting a low pass filter, from a plurality of low pass filters, based on the measured difference.
Claims20
A method for compensating the bandedge ripple of an analog filter, using a circuit comprising a low pass filter, the method comprising:
- receiving, at the analog filter, a plurality of tones of different frequencies from a tone generator;
- measuring, an amplitude of each tone in the plurality of tones after each tone is processed by the analog filter;
- storing the measured amplitudes and frequencies in a database;
- measuring a bandedge ripple by measuring a difference in amplitude between a first tone and a second tone from the plurality of tones;
- and
- selecting a low pass filter, from a plurality of low pass filters, based on the measured difference.
A system for compensating the bandedge ripple of an analog filter, using a low pass filter, the system comprising control circuitry configured to:
- receive, at the analog filter, a plurality of tones of different frequencies from a tone generator;
- measure, an amplitude of each tone in the plurality of tones after each tone is processed by the analog filter;
- store the measured amplitudes and frequencies in a database;
- measure a bandedge ripple by measuring a difference in amplitude between a first tone and a second tone from the plurality of tones;
- and
- select a low pass filter, from a plurality of low pass filters, based on the measured difference.
Dependencies are inferred from the claim text.