Systems and method for a highly integrated multi-mode tuner
AssigneeNXP B.V.
InventorsMats LINDSTROM, Abbolreza SHAFIE
Life of this patent
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Abstract
A method for adjusting the signal to noise ratio of a receiver comprises measuring the peak power for an RF signal and determining, based on the measured peak power, whether the RF signal power is within a desired operating range. The method further includes adjusting an RF attenuation for the receiver, when it is determined that the RF signal power is not within the desired operating range. The method further comprises measuring a peak power for an IF signal, determining based on the measured peak power, whether the IF signal power is within a desired operating range, and adjusting an IF attenuation for the receiver, when it is determined that the IF signal peak power is not within the desired operating range.
Claims6
1-20. (canceled)
A method for adjusting the bandwidth of a receiver, comprising:
- determining whether a signal to noise ratio for a signal output by the receiver is within a desired operating range;
- when it is determined that the signal to noise ratio is not within a desired operating range, determining whether adjacent channel interference is present in the signal;
- narrowing the bandwidth of the receiver when it is determined that adjacent channel interference is present;
- when it is determined that adjacent channel interference is not present, determining whether there is group delay distortion;
- and
- increasing the bandwidth of the receiver when it is determined that the group delay distortion is present.
A tuner including a receiver and a processor coupled with the receiver, the receiver comprising:
- an image rejection block, the processor configured to:
- determine whether a signal to noise ratio for a signal output by the receiver is within a desired operating range;
- when it is determined that the signal to noise ratio is not within a desired operating range, determine whether adjacent channel interference is present in the signal;
- control the image rejection block so as to narrow the bandwidth of the receiver when it is determined that adjacent channel interference is present;
- when it is determined that adjacent channel interference is not present, determine whether there is group delay distortion;
- and
- control the image rejection block so as to increase the bandwidth of the receiver when it is determined that the group delay distortion is present.
Dependencies are inferred from the claim text.